Add initial version of dijkstra backend cloudron image

node_modules/knex/lib/client.js

@@ -0,0 +1,414 @@
+const Bluebird = require('bluebird');
+
+const Raw = require('./raw');
+const Ref = require('./ref');
+const Runner = require('./runner');
+const Formatter = require('./formatter');
+const Transaction = require('./transaction');
+
+const QueryBuilder = require('./query/builder');
+const QueryCompiler = require('./query/compiler');
+
+const SchemaBuilder = require('./schema/builder');
+const SchemaCompiler = require('./schema/compiler');
+const TableBuilder = require('./schema/tablebuilder');
+const TableCompiler = require('./schema/tablecompiler');
+const ColumnBuilder = require('./schema/columnbuilder');
+const ColumnCompiler = require('./schema/columncompiler');
+
+const { Pool, TimeoutError } = require('tarn');
+const inherits = require('inherits');
+const { EventEmitter } = require('events');
+const { promisify } = require('util');
+
+const { makeEscape } = require('./query/string');
+const { uniqueId, cloneDeep, defaults } = require('lodash');
+
+const Logger = require('./logger');
+
+const debug = require('debug')('knex:client');
+const _debugQuery = require('debug')('knex:query');
+const debugBindings = require('debug')('knex:bindings');
+
+const debugQuery = (sql, txId) => _debugQuery(sql.replace(/%/g, '%%'), txId);
+
+const { POOL_CONFIG_OPTIONS } = require('./constants');
+
+// The base client provides the general structure
+// for a dialect specific client object.
+function Client(config = {}) {
+  this.config = config;
+  this.logger = new Logger(config);
+
+  //Client is a required field, so throw error if it's not supplied.
+  //If 'this.dialect' is set, then this is a 'super()' call, in which case
+  //'client' does not have to be set as it's already assigned on the client prototype.
+
+  if (this.dialect && !this.config.client) {
+    this.logger.warn(
+      `Using 'this.dialect' to identify the client is deprecated and support for it will be removed in the future. Please use configuration option 'client' instead.`
+    );
+  }
+  const dbClient = this.config.client || this.dialect;
+  if (!dbClient) {
+    throw new Error(`knex: Required configuration option 'client' is missing.`);
+  }
+
+  if (config.version) {
+    this.version = config.version;
+  }
+
+  if (config.connection && config.connection instanceof Function) {
+    this.connectionConfigProvider = config.connection;
+    this.connectionConfigExpirationChecker = () => true; // causes the provider to be called on first use
+  } else {
+    this.connectionSettings = cloneDeep(config.connection || {});
+    this.connectionConfigExpirationChecker = null;
+  }
+  if (this.driverName && config.connection) {
+    this.initializeDriver();
+    if (!config.pool || (config.pool && config.pool.max !== 0)) {
+      this.initializePool(config);
+    }
+  }
+  this.valueForUndefined = this.raw('DEFAULT');
+  if (config.useNullAsDefault) {
+    this.valueForUndefined = null;
+  }
+}
+
+inherits(Client, EventEmitter);
+
+Object.assign(Client.prototype, {
+  formatter(builder) {
+    return new Formatter(this, builder);
+  },
+
+  queryBuilder() {
+    return new QueryBuilder(this);
+  },
+
+  queryCompiler(builder) {
+    return new QueryCompiler(this, builder);
+  },
+
+  schemaBuilder() {
+    return new SchemaBuilder(this);
+  },
+
+  schemaCompiler(builder) {
+    return new SchemaCompiler(this, builder);
+  },
+
+  tableBuilder(type, tableName, fn) {
+    return new TableBuilder(this, type, tableName, fn);
+  },
+
+  tableCompiler(tableBuilder) {
+    return new TableCompiler(this, tableBuilder);
+  },
+
+  columnBuilder(tableBuilder, type, args) {
+    return new ColumnBuilder(this, tableBuilder, type, args);
+  },
+
+  columnCompiler(tableBuilder, columnBuilder) {
+    return new ColumnCompiler(this, tableBuilder, columnBuilder);
+  },
+
+  runner(builder) {
+    return new Runner(this, builder);
+  },
+
+  transaction(container, config, outerTx) {
+    return new Transaction(this, container, config, outerTx);
+  },
+
+  raw() {
+    return new Raw(this).set(...arguments);
+  },
+
+  ref() {
+    return new Ref(this, ...arguments);
+  },
+
+  _formatQuery(sql, bindings, timeZone) {
+    bindings = bindings == null ? [] : [].concat(bindings);
+    let index = 0;
+    return sql.replace(/\\?\?/g, (match) => {
+      if (match === '\\?') {
+        return '?';
+      }
+      if (index === bindings.length) {
+        return match;
+      }
+      const value = bindings[index++];
+      return this._escapeBinding(value, { timeZone });
+    });
+  },
+
+  _escapeBinding: makeEscape({
+    escapeString(str) {
+      return `'${str.replace(/'/g, "''")}'`;
+    },
+  }),
+
+  query(connection, obj) {
+    if (typeof obj === 'string') obj = { sql: obj };
+    obj.bindings = this.prepBindings(obj.bindings);
+
+    const { __knexUid, __knexTxId } = connection;
+
+    this.emit('query', Object.assign({ __knexUid, __knexTxId }, obj));
+    debugQuery(obj.sql, __knexTxId);
+    debugBindings(obj.bindings, __knexTxId);
+
+    obj.sql = this.positionBindings(obj.sql);
+
+    return this._query(connection, obj).catch((err) => {
+      err.message =
+        this._formatQuery(obj.sql, obj.bindings) + ' - ' + err.message;
+      this.emit(
+        'query-error',
+        err,
+        Object.assign({ __knexUid, __knexTxId }, obj)
+      );
+      throw err;
+    });
+  },
+
+  stream(connection, obj, stream, options) {
+    if (typeof obj === 'string') obj = { sql: obj };
+    obj.bindings = this.prepBindings(obj.bindings);
+
+    const { __knexUid, __knexTxId } = connection;
+
+    this.emit('query', Object.assign({ __knexUid, __knexTxId }, obj));
+    debugQuery(obj.sql, __knexTxId);
+    debugBindings(obj.bindings, __knexTxId);
+
+    obj.sql = this.positionBindings(obj.sql);
+
+    return this._stream(connection, obj, stream, options);
+  },
+
+  prepBindings(bindings) {
+    return bindings;
+  },
+
+  positionBindings(sql) {
+    return sql;
+  },
+
+  postProcessResponse(resp, queryContext) {
+    if (this.config.postProcessResponse) {
+      return this.config.postProcessResponse(resp, queryContext);
+    }
+    return resp;
+  },
+
+  wrapIdentifier(value, queryContext) {
+    return this.customWrapIdentifier(
+      value,
+      this.wrapIdentifierImpl,
+      queryContext
+    );
+  },
+
+  customWrapIdentifier(value, origImpl, queryContext) {
+    if (this.config.wrapIdentifier) {
+      return this.config.wrapIdentifier(value, origImpl, queryContext);
+    }
+    return origImpl(value);
+  },
+
+  wrapIdentifierImpl(value) {
+    return value !== '*' ? `"${value.replace(/"/g, '""')}"` : '*';
+  },
+
+  initializeDriver() {
+    try {
+      this.driver = this._driver();
+    } catch (e) {
+      const message = `Knex: run\n$ npm install ${this.driverName} --save`;
+      this.logger.error(`${message}\n${e.message}\n${e.stack}`);
+      throw new Error(`${message}\n${e.message}`);
+    }
+  },
+
+  poolDefaults() {
+    return { min: 2, max: 10, propagateCreateError: true };
+  },
+
+  getPoolSettings(poolConfig) {
+    poolConfig = defaults({}, poolConfig, this.poolDefaults());
+
+    POOL_CONFIG_OPTIONS.forEach((option) => {
+      if (option in poolConfig) {
+        this.logger.warn(
+          [
+            `Pool config option "${option}" is no longer supported.`,
+            `See https://github.com/Vincit/tarn.js for possible pool config options.`,
+          ].join(' ')
+        );
+      }
+    });
+
+    const timeouts = [
+      this.config.acquireConnectionTimeout || 60000,
+      poolConfig.acquireTimeoutMillis,
+    ].filter((timeout) => timeout !== undefined);
+
+    // acquire connection timeout can be set on config or config.pool
+    // choose the smallest, positive timeout setting and set on poolConfig
+    poolConfig.acquireTimeoutMillis = Math.min(...timeouts);
+
+    const updatePoolConnectionSettingsFromProvider = async () => {
+      if (!this.connectionConfigProvider) {
+        return; // static configuration, nothing to update
+      }
+      if (
+        !this.connectionConfigExpirationChecker ||
+        !this.connectionConfigExpirationChecker()
+      ) {
+        return; // not expired, reuse existing connection
+      }
+      const providerResult = await this.connectionConfigProvider();
+      if (providerResult.expirationChecker) {
+        this.connectionConfigExpirationChecker =
+          providerResult.expirationChecker;
+        delete providerResult.expirationChecker; // MySQL2 driver warns on receiving extra properties
+      } else {
+        this.connectionConfigExpirationChecker = null;
+      }
+      this.connectionSettings = providerResult;
+    };
+
+    return Object.assign(poolConfig, {
+      create: async () => {
+        await updatePoolConnectionSettingsFromProvider();
+        const connection = await this.acquireRawConnection();
+        connection.__knexUid = uniqueId('__knexUid');
+        if (poolConfig.afterCreate) {
+          await promisify(poolConfig.afterCreate)(connection);
+        }
+        return connection;
+      },
+
+      destroy: (connection) => {
+        if (connection !== void 0) {
+          return this.destroyRawConnection(connection);
+        }
+      },
+
+      validate: (connection) => {
+        if (connection.__knex__disposed) {
+          this.logger.warn(`Connection Error: ${connection.__knex__disposed}`);
+          return false;
+        }
+
+        return this.validateConnection(connection);
+      },
+    });
+  },
+
+  initializePool(config = this.config) {
+    if (this.pool) {
+      this.logger.warn('The pool has already been initialized');
+      return;
+    }
+
+    const tarnPoolConfig = {
+      ...this.getPoolSettings(config.pool),
+    };
+    // afterCreate is an internal knex param, tarn.js does not support it
+    if (tarnPoolConfig.afterCreate) {
+      delete tarnPoolConfig.afterCreate;
+    }
+
+    this.pool = new Pool(tarnPoolConfig);
+  },
+
+  validateConnection(connection) {
+    return true;
+  },
+
+  // Acquire a connection from the pool.
+  acquireConnection() {
+    if (!this.pool) {
+      return Bluebird.reject(new Error('Unable to acquire a connection'));
+    }
+    try {
+      return Bluebird.try(() => this.pool.acquire().promise)
+        .then((connection) => {
+          debug('acquired connection from pool: %s', connection.__knexUid);
+          return connection;
+        })
+        .catch(TimeoutError, () => {
+          throw new Bluebird.TimeoutError(
+            'Knex: Timeout acquiring a connection. The pool is probably full. ' +
+              'Are you missing a .transacting(trx) call?'
+          );
+        });
+    } catch (e) {
+      return Bluebird.reject(e);
+    }
+  },
+
+  // Releases a connection back to the connection pool,
+  // returning a promise resolved when the connection is released.
+  releaseConnection(connection) {
+    debug('releasing connection to pool: %s', connection.__knexUid);
+    const didRelease = this.pool.release(connection);
+
+    if (!didRelease) {
+      debug('pool refused connection: %s', connection.__knexUid);
+    }
+
+    return Bluebird.resolve();
+  },
+
+  // Destroy the current connection pool for the client.
+  destroy(callback) {
+    const maybeDestroy = this.pool && this.pool.destroy();
+
+    return Bluebird.resolve(maybeDestroy)
+      .then(() => {
+        this.pool = void 0;
+
+        if (typeof callback === 'function') {
+          callback();
+        }
+      })
+      .catch((err) => {
+        if (typeof callback === 'function') {
+          callback(err);
+        }
+
+        return Bluebird.reject(err);
+      });
+  },
+
+  // Return the database being used by this client.
+  database() {
+    return this.connectionSettings.database;
+  },
+
+  toString() {
+    return '[object KnexClient]';
+  },
+
+  canCancelQuery: false,
+
+  assertCanCancelQuery() {
+    if (!this.canCancelQuery) {
+      throw new Error('Query cancelling not supported for this dialect');
+    }
+  },
+
+  cancelQuery() {
+    throw new Error('Query cancelling not supported for this dialect');
+  },
+});
+
+module.exports = Client;

node_modules/knex/lib/constants.js

@@ -0,0 +1,38 @@
+const { keys } = require('lodash');
+
+// The client names we'll allow in the `{name: lib}` pairing.
+const CLIENT_ALIASES = Object.freeze({
+  pg: 'postgres',
+  postgresql: 'postgres',
+  sqlite: 'sqlite3',
+});
+
+const SUPPORTED_CLIENTS = Object.freeze(
+  [
+    'mssql',
+    'mysql',
+    'mysql2',
+    'oracledb',
+    'postgres',
+    'redshift',
+    'sqlite3',
+  ].concat(keys(CLIENT_ALIASES))
+);
+
+const POOL_CONFIG_OPTIONS = Object.freeze([
+  'maxWaitingClients',
+  'testOnBorrow',
+  'fifo',
+  'priorityRange',
+  'autostart',
+  'evictionRunIntervalMillis',
+  'numTestsPerRun',
+  'softIdleTimeoutMillis',
+  'Promise',
+]);
+
+module.exports = {
+  CLIENT_ALIASES,
+  SUPPORTED_CLIENTS,
+  POOL_CONFIG_OPTIONS,
+};

node_modules/knex/lib/dialects/mssql/index.js

@@ -0,0 +1,384 @@
+// MSSQL Client
+// -------
+const { map, flatten, values } = require('lodash');
+const inherits = require('inherits');
+
+const Client = require('../../client');
+const Bluebird = require('bluebird');
+
+const Formatter = require('../../formatter');
+const Transaction = require('./transaction');
+const QueryCompiler = require('./query/compiler');
+const SchemaCompiler = require('./schema/compiler');
+const TableCompiler = require('./schema/tablecompiler');
+const ColumnCompiler = require('./schema/columncompiler');
+
+const SQL_INT4 = { MIN: -2147483648, MAX: 2147483647 };
+const SQL_BIGINT_SAFE = { MIN: -9007199254740991, MAX: 9007199254740991 };
+
+// Always initialize with the "QueryBuilder" and "QueryCompiler" objects, which
+// extend the base 'lib/query/builder' and 'lib/query/compiler', respectively.
+function Client_MSSQL(config = {}) {
+  // #1235 mssql module wants 'server', not 'host'. This is to enforce the same
+  // options object across all dialects.
+  if (config && config.connection && config.connection.host) {
+    config.connection.server = config.connection.host;
+  }
+
+  // mssql always creates pool :( lets try to unpool it as much as possible
+  this.mssqlPoolSettings = {
+    min: 1,
+    max: 1,
+    idleTimeoutMillis: Number.MAX_SAFE_INTEGER,
+    evictionRunIntervalMillis: 0,
+  };
+
+  Client.call(this, config);
+}
+
+inherits(Client_MSSQL, Client);
+
+Object.assign(Client_MSSQL.prototype, {
+  dialect: 'mssql',
+
+  driverName: 'mssql',
+
+  _driver() {
+    const tds = require('tedious');
+    const mssqlTedious = require('mssql');
+    const base = require('mssql/lib/base');
+
+    // Monkey patch mssql's tedious driver _poolCreate method to fix problem with hanging acquire
+    // connection, this should be removed when https://github.com/tediousjs/node-mssql/pull/614 is
+    // merged and released.
+
+    // Also since this dialect actually always uses tedious driver (msnodesqlv8 driver should be
+    // required in different way), it might be better to use tedious directly, because mssql
+    // driver uses always internally extra generic-pool and just adds one unnecessary layer of
+    // indirection between database and knex and mssql driver has been lately without maintainer
+    // (changing implementation to use tedious will be breaking change though).
+
+    // TODO: remove mssql implementation all together and use tedious directly
+
+    /* istanbul ignore next */
+    const mssqlVersion = require('mssql/package.json').version;
+    /* istanbul ignore next */
+    if (mssqlVersion === '4.1.0') {
+      mssqlTedious.ConnectionPool.prototype.release = release;
+      mssqlTedious.ConnectionPool.prototype._poolCreate = _poolCreate;
+    } else {
+      const [major] = mssqlVersion.split('.');
+      // if version is not ^5.0.0
+      if (major < 5) {
+        throw new Error(
+          'This knex version only supports mssql driver versions 4.1.0 and 5.0.0+'
+        );
+      }
+    }
+
+    /* istanbul ignore next */
+    // in some rare situations release is called when stream is interrupted, but
+    // after pool is already destroyed
+    function release(connection) {
+      if (this.pool) {
+        this.pool.release(connection);
+      }
+    }
+
+    /* istanbul ignore next */
+    function _poolCreate() {
+      // implementation is copy-pasted from https://github.com/tediousjs/node-mssql/pull/614
+      return new base.Promise((resolve, reject) => {
+        const cfg = {
+          userName: this.config.user,
+          password: this.config.password,
+          server: this.config.server,
+          options: Object.assign({}, this.config.options),
+          domain: this.config.domain,
+        };
+
+        cfg.options.database = this.config.database;
+        cfg.options.port = this.config.port;
+        cfg.options.connectTimeout =
+          this.config.connectionTimeout || this.config.timeout || 15000;
+        cfg.options.requestTimeout =
+          this.config.requestTimeout != null
+            ? this.config.requestTimeout
+            : 15000;
+        cfg.options.tdsVersion = cfg.options.tdsVersion || '7_4';
+        cfg.options.rowCollectionOnDone = false;
+        cfg.options.rowCollectionOnRequestCompletion = false;
+        cfg.options.useColumnNames = false;
+        cfg.options.appName = cfg.options.appName || 'node-mssql';
+
+        // tedious always connect via tcp when port is specified
+        if (cfg.options.instanceName) delete cfg.options.port;
+
+        if (isNaN(cfg.options.requestTimeout))
+          cfg.options.requestTimeout = 15000;
+        if (cfg.options.requestTimeout === Infinity)
+          cfg.options.requestTimeout = 0;
+        if (cfg.options.requestTimeout < 0) cfg.options.requestTimeout = 0;
+
+        if (this.config.debug) {
+          cfg.options.debug = {
+            packet: true,
+            token: true,
+            data: true,
+            payload: true,
+          };
+        }
+
+        const tedious = new tds.Connection(cfg);
+
+        // prevent calling resolve again on end event
+        let alreadyResolved = false;
+
+        function safeResolve(err) {
+          if (!alreadyResolved) {
+            alreadyResolved = true;
+            resolve(err);
+          }
+        }
+
+        function safeReject(err) {
+          if (!alreadyResolved) {
+            alreadyResolved = true;
+            reject(err);
+          }
+        }
+
+        tedious.once('end', (evt) => {
+          safeReject(
+            new base.ConnectionError(
+              'Connection ended unexpectedly during connecting'
+            )
+          );
+        });
+
+        tedious.once('connect', (err) => {
+          if (err) {
+            err = new base.ConnectionError(err);
+            return safeReject(err);
+          }
+          safeResolve(tedious);
+        });
+
+        tedious.on('error', (err) => {
+          if (err.code === 'ESOCKET') {
+            tedious.hasError = true;
+            return;
+          }
+
+          this.emit('error', err);
+        });
+
+        if (this.config.debug) {
+          tedious.on('debug', this.emit.bind(this, 'debug', tedious));
+        }
+      });
+    }
+
+    return mssqlTedious;
+  },
+
+  formatter() {
+    return new MSSQL_Formatter(this, ...arguments);
+  },
+
+  transaction() {
+    return new Transaction(this, ...arguments);
+  },
+
+  queryCompiler() {
+    return new QueryCompiler(this, ...arguments);
+  },
+
+  schemaCompiler() {
+    return new SchemaCompiler(this, ...arguments);
+  },
+
+  tableCompiler() {
+    return new TableCompiler(this, ...arguments);
+  },
+
+  columnCompiler() {
+    return new ColumnCompiler(this, ...arguments);
+  },
+
+  wrapIdentifierImpl(value) {
+    if (value === '*') {
+      return '*';
+    }
+
+    return `[${value.replace(/[[\]']+/g, '')}]`;
+  },
+
+  // Get a raw connection, called by the `pool` whenever a new
+  // connection needs to be added to the pool.
+  acquireRawConnection() {
+    return new Bluebird((resolver, rejecter) => {
+      const settings = Object.assign({}, this.connectionSettings);
+      settings.pool = this.mssqlPoolSettings;
+
+      const connection = new this.driver.ConnectionPool(settings);
+      connection.connect((err) => {
+        if (err) {
+          return rejecter(err);
+        }
+        connection.on('error', (err) => {
+          connection.__knex__disposed = err;
+        });
+        resolver(connection);
+      });
+    });
+  },
+
+  validateConnection(connection) {
+    if (connection.connected === true) {
+      return true;
+    }
+
+    return false;
+  },
+
+  // Used to explicitly close a connection, called internally by the pool
+  // when a connection times out or the pool is shutdown.
+  destroyRawConnection(connection) {
+    return connection.close().catch((err) => {
+      // some times close will reject just because pool has already been destoyed
+      // internally by the driver there is nothing we can do in this case
+    });
+  },
+
+  // Position the bindings for the query.
+  positionBindings(sql) {
+    let questionCount = -1;
+    return sql.replace(/\?/g, function() {
+      questionCount += 1;
+      return `@p${questionCount}`;
+    });
+  },
+
+  // Grab a connection, run the query via the MSSQL streaming interface,
+  // and pass that through to the stream we've sent back to the client.
+  _stream(connection, obj, stream) {
+    if (!obj || typeof obj === 'string') obj = { sql: obj };
+    return new Bluebird((resolver, rejecter) => {
+      stream.on('error', (err) => {
+        rejecter(err);
+      });
+      stream.on('end', resolver);
+      const { sql } = obj;
+      if (!sql) return resolver();
+      const req = (connection.tx_ || connection).request();
+      //req.verbose = true;
+      req.multiple = true;
+      req.stream = true;
+      if (obj.bindings) {
+        for (let i = 0; i < obj.bindings.length; i++) {
+          this._setReqInput(req, i, obj.bindings[i]);
+        }
+      }
+      req.pipe(stream);
+      req.query(sql);
+    });
+  },
+
+  // Runs the query on the specified connection, providing the bindings
+  // and any other necessary prep work.
+  _query(connection, obj) {
+    const client = this;
+    if (!obj || typeof obj === 'string') obj = { sql: obj };
+    return new Bluebird((resolver, rejecter) => {
+      const { sql } = obj;
+      if (!sql) return resolver();
+      const req = (connection.tx_ || connection).request();
+      // req.verbose = true;
+      req.multiple = true;
+      if (obj.bindings) {
+        for (let i = 0; i < obj.bindings.length; i++) {
+          client._setReqInput(req, i, obj.bindings[i]);
+        }
+      }
+      req.query(sql, (err, recordset) => {
+        if (err) {
+          return rejecter(err);
+        }
+        obj.response = recordset.recordsets[0];
+        resolver(obj);
+      });
+    });
+  },
+
+  // sets a request input parameter. Detects bigints and decimals and sets type appropriately.
+  _setReqInput(req, i, binding) {
+    if (typeof binding == 'number') {
+      if (binding % 1 !== 0) {
+        req.input(`p${i}`, this.driver.Decimal(38, 10), binding);
+      } else if (binding < SQL_INT4.MIN || binding > SQL_INT4.MAX) {
+        if (binding < SQL_BIGINT_SAFE.MIN || binding > SQL_BIGINT_SAFE.MAX) {
+          throw new Error(
+            `Bigint must be safe integer or must be passed as string, saw ${binding}`
+          );
+        }
+        req.input(`p${i}`, this.driver.BigInt, binding);
+      } else {
+        req.input(`p${i}`, this.driver.Int, binding);
+      }
+    } else {
+      req.input(`p${i}`, binding);
+    }
+  },
+
+  // Process the response as returned from the query.
+  processResponse(obj, runner) {
+    if (obj == null) return;
+    const { response, method } = obj;
+    if (obj.output) return obj.output.call(runner, response);
+    switch (method) {
+      case 'select':
+      case 'pluck':
+      case 'first':
+        if (method === 'pluck') return map(response, obj.pluck);
+        return method === 'first' ? response[0] : response;
+      case 'insert':
+      case 'del':
+      case 'update':
+      case 'counter':
+        if (obj.returning) {
+          if (obj.returning === '@@rowcount') {
+            return response[0][''];
+          }
+
+          if (
+            (Array.isArray(obj.returning) && obj.returning.length > 1) ||
+            obj.returning[0] === '*'
+          ) {
+            return response;
+          }
+          // return an array with values if only one returning value was specified
+          return flatten(map(response, values));
+        }
+        return response;
+      default:
+        return response;
+    }
+  },
+});
+
+class MSSQL_Formatter extends Formatter {
+  // Accepts a string or array of columns to wrap as appropriate.
+  columnizeWithPrefix(prefix, target) {
+    const columns = typeof target === 'string' ? [target] : target;
+    let str = '',
+      i = -1;
+    while (++i < columns.length) {
+      if (i > 0) str += ', ';
+      str += prefix + this.wrap(columns[i]);
+    }
+    return str;
+  }
+}
+
+module.exports = Client_MSSQL;

node_modules/knex/lib/dialects/mssql/query/compiler.js

@@ -0,0 +1,264 @@
+// MSSQL Query Compiler
+// ------
+const inherits = require('inherits');
+const QueryCompiler = require('../../../query/compiler');
+
+const { isEmpty, compact, identity } = require('lodash');
+
+function QueryCompiler_MSSQL(client, builder) {
+  QueryCompiler.call(this, client, builder);
+}
+inherits(QueryCompiler_MSSQL, QueryCompiler);
+
+const components = [
+  'columns',
+  'join',
+  'lock',
+  'where',
+  'union',
+  'group',
+  'having',
+  'order',
+  'limit',
+  'offset',
+];
+
+Object.assign(QueryCompiler_MSSQL.prototype, {
+  _emptyInsertValue: 'default values',
+
+  select() {
+    const sql = this.with();
+    const statements = components.map((component) => this[component](this));
+    return sql + compact(statements).join(' ');
+  },
+
+  // Compiles an "insert" query, allowing for multiple
+  // inserts using a single query statement.
+  insert() {
+    const insertValues = this.single.insert || [];
+    let sql = this.with() + `insert into ${this.tableName} `;
+    const { returning } = this.single;
+    const returningSql = returning
+      ? this._returning('insert', returning) + ' '
+      : '';
+
+    if (Array.isArray(insertValues)) {
+      if (insertValues.length === 0) {
+        return '';
+      }
+    } else if (typeof insertValues === 'object' && isEmpty(insertValues)) {
+      return {
+        sql: sql + returningSql + this._emptyInsertValue,
+        returning,
+      };
+    }
+
+    const insertData = this._prepInsert(insertValues);
+    if (typeof insertData === 'string') {
+      sql += insertData;
+    } else {
+      if (insertData.columns.length) {
+        sql += `(${this.formatter.columnize(insertData.columns)}`;
+        sql += `) ${returningSql}values (`;
+        let i = -1;
+        while (++i < insertData.values.length) {
+          if (i !== 0) sql += '), (';
+          sql += this.formatter.parameterize(
+            insertData.values[i],
+            this.client.valueForUndefined
+          );
+        }
+        sql += ')';
+      } else if (insertValues.length === 1 && insertValues[0]) {
+        sql += returningSql + this._emptyInsertValue;
+      } else {
+        sql = '';
+      }
+    }
+    return {
+      sql,
+      returning,
+    };
+  },
+
+  // Compiles an `update` query, allowing for a return value.
+  update() {
+    const top = this.top();
+    const withSQL = this.with();
+    const updates = this._prepUpdate(this.single.update);
+    const join = this.join();
+    const where = this.where();
+    const order = this.order();
+    const { returning } = this.single;
+    return {
+      sql:
+        withSQL +
+        `update ${top ? top + ' ' : ''}${this.tableName}` +
+        ' set ' +
+        updates.join(', ') +
+        (returning ? ` ${this._returning('update', returning)}` : '') +
+        (join ? ` from ${this.tableName} ${join}` : '') +
+        (where ? ` ${where}` : '') +
+        (order ? ` ${order}` : '') +
+        (!returning ? this._returning('rowcount', '@@rowcount') : ''),
+      returning: returning || '@@rowcount',
+    };
+  },
+
+  // Compiles a `delete` query.
+  del() {
+    // Make sure tableName is processed by the formatter first.
+    const withSQL = this.with();
+    const { tableName } = this;
+    const wheres = this.where();
+    const { returning } = this.single;
+    return {
+      sql:
+        withSQL +
+        `delete from ${tableName}` +
+        (returning ? ` ${this._returning('del', returning)}` : '') +
+        (wheres ? ` ${wheres}` : '') +
+        (!returning ? this._returning('rowcount', '@@rowcount') : ''),
+      returning: returning || '@@rowcount',
+    };
+  },
+
+  // Compiles the columns in the query, specifying if an item was distinct.
+  columns() {
+    let distinctClause = '';
+    if (this.onlyUnions()) return '';
+    const top = this.top();
+    const columns = this.grouped.columns || [];
+    let i = -1,
+      sql = [];
+    if (columns) {
+      while (++i < columns.length) {
+        const stmt = columns[i];
+        if (stmt.distinct) distinctClause = 'distinct ';
+        if (stmt.distinctOn) {
+          distinctClause = this.distinctOn(stmt.value);
+          continue;
+        }
+        if (stmt.type === 'aggregate') {
+          sql.push(...this.aggregate(stmt));
+        } else if (stmt.type === 'aggregateRaw') {
+          sql.push(this.aggregateRaw(stmt));
+        } else if (stmt.value && stmt.value.length > 0) {
+          sql.push(this.formatter.columnize(stmt.value));
+        }
+      }
+    }
+    if (sql.length === 0) sql = ['*'];
+
+    return (
+      `select ${distinctClause}` +
+      (top ? top + ' ' : '') +
+      sql.join(', ') +
+      (this.tableName ? ` from ${this.tableName}` : '')
+    );
+  },
+
+  _returning(method, value) {
+    switch (method) {
+      case 'update':
+      case 'insert':
+        return value
+          ? `output ${this.formatter.columnizeWithPrefix('inserted.', value)}`
+          : '';
+      case 'del':
+        return value
+          ? `output ${this.formatter.columnizeWithPrefix('deleted.', value)}`
+          : '';
+      case 'rowcount':
+        return value ? ';select @@rowcount' : '';
+    }
+  },
+
+  // Compiles a `truncate` query.
+  truncate() {
+    return `truncate table ${this.tableName}`;
+  },
+
+  forUpdate() {
+    // this doesn't work exacltly as it should, one should also mention index while locking
+    // https://stackoverflow.com/a/9818448/360060
+    return 'with (UPDLOCK)';
+  },
+
+  forShare() {
+    // http://www.sqlteam.com/article/introduction-to-locking-in-sql-server
+    return 'with (HOLDLOCK)';
+  },
+
+  // Compiles a `columnInfo` query.
+  columnInfo() {
+    const column = this.single.columnInfo;
+    let schema = this.single.schema;
+
+    // The user may have specified a custom wrapIdentifier function in the config. We
+    // need to run the identifiers through that function, but not format them as
+    // identifiers otherwise.
+    const table = this.client.customWrapIdentifier(this.single.table, identity);
+
+    if (schema) {
+      schema = this.client.customWrapIdentifier(schema, identity);
+    }
+
+    let sql = `select * from information_schema.columns where table_name = ? and table_catalog = ?`;
+    const bindings = [table, this.client.database()];
+
+    if (schema) {
+      sql += ' and table_schema = ?';
+      bindings.push(schema);
+    } else {
+      sql += ` and table_schema = 'dbo'`;
+    }
+
+    return {
+      sql,
+      bindings: bindings,
+      output(resp) {
+        const out = resp.reduce(function(columns, val) {
+          columns[val.COLUMN_NAME] = {
+            defaultValue: val.COLUMN_DEFAULT,
+            type: val.DATA_TYPE,
+            maxLength: val.CHARACTER_MAXIMUM_LENGTH,
+            nullable: val.IS_NULLABLE === 'YES',
+          };
+          return columns;
+        }, {});
+        return (column && out[column]) || out;
+      },
+    };
+  },
+
+  top() {
+    const noLimit = !this.single.limit && this.single.limit !== 0;
+    const noOffset = !this.single.offset;
+    if (noLimit || !noOffset) return '';
+    return `top (${this.formatter.parameter(this.single.limit)})`;
+  },
+
+  limit() {
+    return '';
+  },
+
+  offset() {
+    const noLimit = !this.single.limit && this.single.limit !== 0;
+    const noOffset = !this.single.offset;
+    if (noOffset) return '';
+    let offset = `offset ${
+      noOffset ? '0' : this.formatter.parameter(this.single.offset)
+    } rows`;
+    if (!noLimit) {
+      offset += ` fetch next ${this.formatter.parameter(
+        this.single.limit
+      )} rows only`;
+    }
+    return offset;
+  },
+});
+
+// Set the QueryBuilder & QueryCompiler on the client object,
+// in case anyone wants to modify things to suit their own purposes.
+module.exports = QueryCompiler_MSSQL;

node_modules/knex/lib/dialects/mssql/schema/columncompiler.js

@@ -0,0 +1,103 @@
+// MySQL Column Compiler
+// -------
+const inherits = require('inherits');
+const ColumnCompiler = require('../../../schema/columncompiler');
+
+function ColumnCompiler_MSSQL() {
+  ColumnCompiler.apply(this, arguments);
+  this.modifiers = ['nullable', 'defaultTo', 'first', 'after', 'comment'];
+}
+inherits(ColumnCompiler_MSSQL, ColumnCompiler);
+
+// Types
+// ------
+
+Object.assign(ColumnCompiler_MSSQL.prototype, {
+  increments: 'int identity(1,1) not null primary key',
+
+  bigincrements: 'bigint identity(1,1) not null primary key',
+
+  bigint: 'bigint',
+
+  double(precision, scale) {
+    return 'float';
+  },
+
+  floating(precision, scale) {
+    // ignore precicion / scale which is mysql specific stuff
+    return `float`;
+  },
+
+  integer() {
+    // mssql does not support length
+    return 'int';
+  },
+
+  mediumint: 'int',
+
+  smallint: 'smallint',
+
+  tinyint() {
+    // mssql does not support length
+    return 'tinyint';
+  },
+
+  varchar(length) {
+    return `nvarchar(${this._num(length, 255)})`;
+  },
+
+  text: 'nvarchar(max)',
+
+  mediumtext: 'nvarchar(max)',
+
+  longtext: 'nvarchar(max)',
+
+  // TODO: mssql supports check constraints as of SQL Server 2008
+  // so make enu here more like postgres
+  enu: 'nvarchar(100)',
+
+  uuid: 'uniqueidentifier',
+
+  datetime: 'datetime2',
+
+  timestamp({ useTz = false } = {}) {
+    return useTz ? 'datetimeoffset' : 'datetime2';
+  },
+
+  bit(length) {
+    if (length > 1) {
+      this.client.logger.warn('Bit field is exactly 1 bit length for MSSQL');
+    }
+    return 'bit';
+  },
+
+  binary(length) {
+    return length ? `varbinary(${this._num(length)})` : 'varbinary(max)';
+  },
+
+  bool: 'bit',
+
+  // Modifiers
+  // ------
+
+  first() {
+    this.client.logger.warn('Column first modifier not available for MSSQL');
+    return '';
+  },
+
+  after(column) {
+    this.client.logger.warn('Column after modifier not available for MSSQL');
+    return '';
+  },
+
+  comment(comment) {
+    if (comment && comment.length > 255) {
+      this.client.logger.warn(
+        'Your comment is longer than the max comment length for MSSQL'
+      );
+    }
+    return '';
+  },
+});
+
+module.exports = ColumnCompiler_MSSQL;

node_modules/knex/lib/dialects/mssql/schema/compiler.js

@@ -0,0 +1,59 @@
+// MySQL Schema Compiler
+// -------
+const inherits = require('inherits');
+const SchemaCompiler = require('../../../schema/compiler');
+
+function SchemaCompiler_MSSQL(client, builder) {
+  SchemaCompiler.call(this, client, builder);
+}
+inherits(SchemaCompiler_MSSQL, SchemaCompiler);
+
+Object.assign(SchemaCompiler_MSSQL.prototype, {
+  dropTablePrefix: 'DROP TABLE ',
+  dropTableIfExists(tableName) {
+    const name = this.formatter.wrap(prefixedTableName(this.schema, tableName));
+    this.pushQuery(
+      `if object_id('${name}', 'U') is not null DROP TABLE ${name}`
+    );
+  },
+
+  // Rename a table on the schema.
+  renameTable(tableName, to) {
+    this.pushQuery(
+      `exec sp_rename ${this.formatter.parameter(
+        prefixedTableName(this.schema, tableName)
+      )}, ${this.formatter.parameter(to)}`
+    );
+  },
+
+  // Check whether a table exists on the query.
+  hasTable(tableName) {
+    const formattedTable = this.formatter.parameter(
+      this.formatter.wrap(prefixedTableName(this.schema, tableName))
+    );
+
+    const sql =
+      `select object_id from sys.tables ` +
+      `where object_id = object_id(${formattedTable})`;
+    this.pushQuery({ sql, output: (resp) => resp.length > 0 });
+  },
+
+  // Check whether a column exists on the schema.
+  hasColumn(tableName, column) {
+    const formattedColumn = this.formatter.parameter(column);
+    const formattedTable = this.formatter.parameter(
+      this.formatter.wrap(prefixedTableName(this.schema, tableName))
+    );
+    const sql =
+      `select object_id from sys.columns ` +
+      `where name = ${formattedColumn} ` +
+      `and object_id = object_id(${formattedTable})`;
+    this.pushQuery({ sql, output: (resp) => resp.length > 0 });
+  },
+});
+
+function prefixedTableName(prefix, table) {
+  return prefix ? `${prefix}.${table}` : table;
+}
+
+module.exports = SchemaCompiler_MSSQL;

node_modules/knex/lib/dialects/mssql/schema/tablecompiler.js

@@ -0,0 +1,228 @@
+/* eslint max-len:0 */
+
+// MSSQL Table Builder & Compiler
+// -------
+const inherits = require('inherits');
+const TableCompiler = require('../../../schema/tablecompiler');
+const helpers = require('../../../helpers');
+
+// Table Compiler
+// ------
+
+function TableCompiler_MSSQL() {
+  TableCompiler.apply(this, arguments);
+}
+inherits(TableCompiler_MSSQL, TableCompiler);
+
+Object.assign(TableCompiler_MSSQL.prototype, {
+  createAlterTableMethods: ['foreign', 'primary'],
+  createQuery(columns, ifNot) {
+    const createStatement = ifNot
+      ? `if object_id('${this.tableName()}', 'U') is null CREATE TABLE `
+      : 'CREATE TABLE ';
+    const sql =
+      createStatement +
+      this.tableName() +
+      (this._formatting ? ' (\n    ' : ' (') +
+      columns.sql.join(this._formatting ? ',\n    ' : ', ') +
+      ')';
+
+    if (this.single.comment) {
+      const { comment } = this.single;
+      if (comment.length > 60)
+        this.client.logger.warn(
+          'The max length for a table comment is 60 characters'
+        );
+    }
+
+    this.pushQuery(sql);
+  },
+
+  lowerCase: false,
+
+  addColumnsPrefix: 'ADD ',
+
+  dropColumnPrefix: 'DROP COLUMN ',
+
+  alterColumnPrefix: 'ALTER COLUMN ',
+
+  // Compiles column add.  Multiple columns need only one ADD clause (not one ADD per column) so core addColumns doesn't work.  #1348
+  addColumns(columns, prefix) {
+    prefix = prefix || this.addColumnsPrefix;
+
+    if (columns.sql.length > 0) {
+      this.pushQuery({
+        sql:
+          (this.lowerCase ? 'alter table ' : 'ALTER TABLE ') +
+          this.tableName() +
+          ' ' +
+          prefix +
+          columns.sql.join(', '),
+        bindings: columns.bindings,
+      });
+    }
+  },
+
+  // Compiles column drop.  Multiple columns need only one DROP clause (not one DROP per column) so core dropColumn doesn't work.  #1348
+  dropColumn() {
+    const _this2 = this;
+    const columns = helpers.normalizeArr.apply(null, arguments);
+
+    const drops = (Array.isArray(columns) ? columns : [columns]).map((column) =>
+      _this2.formatter.wrap(column)
+    );
+    this.pushQuery(
+      (this.lowerCase ? 'alter table ' : 'ALTER TABLE ') +
+        this.tableName() +
+        ' ' +
+        this.dropColumnPrefix +
+        drops.join(', ')
+    );
+  },
+
+  // Compiles the comment on the table.
+  comment() {},
+
+  changeType() {},
+
+  // Renames a column on the table.
+  renameColumn(from, to) {
+    this.pushQuery(
+      `exec sp_rename ${this.formatter.parameter(
+        this.tableName() + '.' + from
+      )}, ${this.formatter.parameter(to)}, 'COLUMN'`
+    );
+  },
+
+  dropFKRefs(runner, refs) {
+    const formatter = this.client.formatter(this.tableBuilder);
+    return Promise.all(
+      refs.map(function(ref) {
+        const constraintName = formatter.wrap(ref.CONSTRAINT_NAME);
+        const tableName = formatter.wrap(ref.TABLE_NAME);
+        return runner.query({
+          sql: `ALTER TABLE ${tableName} DROP CONSTRAINT ${constraintName}`,
+        });
+      })
+    );
+  },
+  createFKRefs(runner, refs) {
+    const formatter = this.client.formatter(this.tableBuilder);
+
+    return Promise.all(
+      refs.map(function(ref) {
+        const tableName = formatter.wrap(ref.TABLE_NAME);
+        const keyName = formatter.wrap(ref.CONSTRAINT_NAME);
+        const column = formatter.columnize(ref.COLUMN_NAME);
+        const references = formatter.columnize(ref.REFERENCED_COLUMN_NAME);
+        const inTable = formatter.wrap(ref.REFERENCED_TABLE_NAME);
+        const onUpdate = ` ON UPDATE ${ref.UPDATE_RULE}`;
+        const onDelete = ` ON DELETE ${ref.DELETE_RULE}`;
+
+        return runner.query({
+          sql:
+            `ALTER TABLE ${tableName} ADD CONSTRAINT ${keyName}` +
+            ' FOREIGN KEY (' +
+            column +
+            ') REFERENCES ' +
+            inTable +
+            ' (' +
+            references +
+            ')' +
+            onUpdate +
+            onDelete,
+        });
+      })
+    );
+  },
+
+  index(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('index', this.tableNameRaw, columns);
+    this.pushQuery(
+      `CREATE INDEX ${indexName} ON ${this.tableName()} (${this.formatter.columnize(
+        columns
+      )})`
+    );
+  },
+
+  primary(columns, constraintName) {
+    constraintName = constraintName
+      ? this.formatter.wrap(constraintName)
+      : this.formatter.wrap(`${this.tableNameRaw}_pkey`);
+    if (!this.forCreate) {
+      this.pushQuery(
+        `ALTER TABLE ${this.tableName()} ADD CONSTRAINT ${constraintName} PRIMARY KEY (${this.formatter.columnize(
+          columns
+        )})`
+      );
+    } else {
+      this.pushQuery(
+        `CONSTRAINT ${constraintName} PRIMARY KEY (${this.formatter.columnize(
+          columns
+        )})`
+      );
+    }
+  },
+
+  unique(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('unique', this.tableNameRaw, columns);
+
+    if (!Array.isArray(columns)) {
+      columns = [columns];
+    }
+
+    const whereAllTheColumnsAreNotNull = columns
+      .map((column) => this.formatter.columnize(column) + ' IS NOT NULL')
+      .join(' AND ');
+
+    // make unique constraint that allows null https://stackoverflow.com/a/767702/360060
+    // to be more or less compatible with other DBs (if any of the columns is NULL then "duplicates" are allowed)
+    this.pushQuery(
+      `CREATE UNIQUE INDEX ${indexName} ON ${this.tableName()} (${this.formatter.columnize(
+        columns
+      )}) WHERE ${whereAllTheColumnsAreNotNull}`
+    );
+  },
+
+  // Compile a drop index command.
+  dropIndex(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('index', this.tableNameRaw, columns);
+    this.pushQuery(`DROP INDEX ${indexName} ON ${this.tableName()}`);
+  },
+
+  // Compile a drop foreign key command.
+  dropForeign(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('foreign', this.tableNameRaw, columns);
+    this.pushQuery(
+      `ALTER TABLE ${this.tableName()} DROP CONSTRAINT ${indexName}`
+    );
+  },
+
+  // Compile a drop primary key command.
+  dropPrimary(constraintName) {
+    constraintName = constraintName
+      ? this.formatter.wrap(constraintName)
+      : this.formatter.wrap(`${this.tableNameRaw}_pkey`);
+    this.pushQuery(
+      `ALTER TABLE ${this.tableName()} DROP CONSTRAINT ${constraintName}`
+    );
+  },
+
+  // Compile a drop unique key command.
+  dropUnique(column, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('unique', this.tableNameRaw, column);
+    this.pushQuery(`DROP INDEX ${indexName} ON ${this.tableName()}`);
+  },
+});
+
+module.exports = TableCompiler_MSSQL;

node_modules/knex/lib/dialects/mssql/transaction.js

@@ -0,0 +1,107 @@
+const Bluebird = require('bluebird');
+const Transaction = require('../../transaction');
+const { isUndefined } = require('lodash');
+const debug = require('debug')('knex:tx');
+
+module.exports = class Transaction_MSSQL extends Transaction {
+  begin(conn) {
+    debug('%s: begin', this.txid);
+    return conn.tx_.begin().then(this._resolver, this._rejecter);
+  }
+
+  savepoint(conn) {
+    debug('%s: savepoint at', this.txid);
+    return Bluebird.resolve().then(() =>
+      this.query(conn, `SAVE TRANSACTION ${this.txid}`)
+    );
+  }
+
+  commit(conn, value) {
+    this._completed = true;
+    debug('%s: commit', this.txid);
+    return conn.tx_.commit().then(() => this._resolver(value), this._rejecter);
+  }
+
+  release(conn, value) {
+    return this._resolver(value);
+  }
+
+  rollback(conn, error) {
+    this._completed = true;
+    debug('%s: rolling back', this.txid);
+    return conn.tx_.rollback().then(
+      () => {
+        let err = error;
+        if (isUndefined(error)) {
+          if (this.doNotRejectOnRollback) {
+            this._resolver();
+            return;
+          }
+          err = new Error(`Transaction rejected with non-error: ${error}`);
+        }
+        this._rejecter(err);
+      },
+      (err) => {
+        if (error) err.originalError = error;
+        return this._rejecter(err);
+      }
+    );
+  }
+
+  rollbackTo(conn, error) {
+    debug('%s: rolling backTo', this.txid);
+    return Bluebird.resolve()
+      .then(() =>
+        this.query(conn, `ROLLBACK TRANSACTION ${this.txid}`, 2, error)
+      )
+      .then(() => this._rejecter(error));
+  }
+
+  // Acquire a connection and create a disposer - either using the one passed
+  // via config or getting one off the client. The disposer will be called once
+  // the original promise is marked completed.
+  acquireConnection(config, cb) {
+    const configConnection = config && config.connection;
+    return new Bluebird((resolve, reject) => {
+      try {
+        resolve(
+          (this.outerTx ? this.outerTx.conn : null) ||
+            configConnection ||
+            this.client.acquireConnection()
+        );
+      } catch (e) {
+        reject(e);
+      }
+    })
+      .then((conn) => {
+        conn.__knexTxId = this.txid;
+        if (!this.outerTx) {
+          this.conn = conn;
+          conn.tx_ = conn.transaction();
+        }
+        return conn;
+      })
+      .then(async (conn) => {
+        try {
+          return await cb(conn);
+        } finally {
+          if (!this.outerTx) {
+            if (conn.tx_) {
+              if (!this._completed) {
+                debug('%s: unreleased transaction', this.txid);
+                conn.tx_.rollback();
+              }
+              conn.tx_ = null;
+            }
+            this.conn = null;
+            if (!configConnection) {
+              debug('%s: releasing connection', this.txid);
+              this.client.releaseConnection(conn);
+            } else {
+              debug('%s: not releasing external connection', this.txid);
+            }
+          }
+        }
+      });
+  }
+};

node_modules/knex/lib/dialects/mysql/index.js

@@ -0,0 +1,198 @@
+// MySQL Client
+// -------
+const inherits = require('inherits');
+const { map, defer } = require('lodash');
+const { promisify } = require('util');
+const Client = require('../../client');
+const Bluebird = require('bluebird');
+
+const Transaction = require('./transaction');
+const QueryCompiler = require('./query/compiler');
+const SchemaCompiler = require('./schema/compiler');
+const TableCompiler = require('./schema/tablecompiler');
+const ColumnCompiler = require('./schema/columncompiler');
+
+const { makeEscape } = require('../../query/string');
+
+// Always initialize with the "QueryBuilder" and "QueryCompiler"
+// objects, which extend the base 'lib/query/builder' and
+// 'lib/query/compiler', respectively.
+function Client_MySQL(config) {
+  Client.call(this, config);
+}
+
+inherits(Client_MySQL, Client);
+
+Object.assign(Client_MySQL.prototype, {
+  dialect: 'mysql',
+
+  driverName: 'mysql',
+
+  _driver() {
+    return require('mysql');
+  },
+
+  queryCompiler() {
+    return new QueryCompiler(this, ...arguments);
+  },
+
+  schemaCompiler() {
+    return new SchemaCompiler(this, ...arguments);
+  },
+
+  tableCompiler() {
+    return new TableCompiler(this, ...arguments);
+  },
+
+  columnCompiler() {
+    return new ColumnCompiler(this, ...arguments);
+  },
+
+  transaction() {
+    return new Transaction(this, ...arguments);
+  },
+
+  _escapeBinding: makeEscape(),
+
+  wrapIdentifierImpl(value) {
+    return value !== '*' ? `\`${value.replace(/`/g, '``')}\`` : '*';
+  },
+
+  // Get a raw connection, called by the `pool` whenever a new
+  // connection needs to be added to the pool.
+  acquireRawConnection() {
+    return new Bluebird((resolver, rejecter) => {
+      const connection = this.driver.createConnection(this.connectionSettings);
+      connection.on('error', (err) => {
+        connection.__knex__disposed = err;
+      });
+      connection.connect((err) => {
+        if (err) {
+          // if connection is rejected, remove listener that was registered above...
+          connection.removeAllListeners();
+          return rejecter(err);
+        }
+        resolver(connection);
+      });
+    });
+  },
+
+  // Used to explicitly close a connection, called internally by the pool
+  // when a connection times out or the pool is shutdown.
+  async destroyRawConnection(connection) {
+    try {
+      const end = promisify((cb) => connection.end(cb));
+      return await end();
+    } catch (err) {
+      connection.__knex__disposed = err;
+    } finally {
+      // see discussion https://github.com/knex/knex/pull/3483
+      defer(() => connection.removeAllListeners());
+    }
+  },
+
+  validateConnection(connection) {
+    if (
+      connection.state === 'connected' ||
+      connection.state === 'authenticated'
+    ) {
+      return true;
+    }
+    return false;
+  },
+
+  // Grab a connection, run the query via the MySQL streaming interface,
+  // and pass that through to the stream we've sent back to the client.
+  _stream(connection, obj, stream, options) {
+    options = options || {};
+    const queryOptions = Object.assign({ sql: obj.sql }, obj.options);
+    return new Bluebird((resolver, rejecter) => {
+      stream.on('error', rejecter);
+      stream.on('end', resolver);
+      const queryStream = connection
+        .query(queryOptions, obj.bindings)
+        .stream(options);
+
+      queryStream.on('error', (err) => {
+        rejecter(err);
+        stream.emit('error', err);
+      });
+
+      queryStream.pipe(stream);
+    });
+  },
+
+  // Runs the query on the specified connection, providing the bindings
+  // and any other necessary prep work.
+  _query(connection, obj) {
+    if (!obj || typeof obj === 'string') obj = { sql: obj };
+    return new Bluebird(function(resolver, rejecter) {
+      if (!obj.sql) {
+        resolver();
+        return;
+      }
+      const queryOptions = Object.assign({ sql: obj.sql }, obj.options);
+      connection.query(queryOptions, obj.bindings, function(err, rows, fields) {
+        if (err) return rejecter(err);
+        obj.response = [rows, fields];
+        resolver(obj);
+      });
+    });
+  },
+
+  // Process the response as returned from the query.
+  processResponse(obj, runner) {
+    if (obj == null) return;
+    const { response } = obj;
+    const { method } = obj;
+    const rows = response[0];
+    const fields = response[1];
+    if (obj.output) return obj.output.call(runner, rows, fields);
+    switch (method) {
+      case 'select':
+      case 'pluck':
+      case 'first': {
+        if (method === 'pluck') {
+          return map(rows, obj.pluck);
+        }
+        return method === 'first' ? rows[0] : rows;
+      }
+      case 'insert':
+        return [rows.insertId];
+      case 'del':
+      case 'update':
+      case 'counter':
+        return rows.affectedRows;
+      default:
+        return response;
+    }
+  },
+
+  canCancelQuery: true,
+
+  cancelQuery(connectionToKill) {
+    const acquiringConn = this.acquireConnection();
+
+    // Error out if we can't acquire connection in time.
+    // Purposely not putting timeout on `KILL QUERY` execution because erroring
+    // early there would release the `connectionToKill` back to the pool with
+    // a `KILL QUERY` command yet to finish.
+    return acquiringConn
+      .timeout(100)
+      .then((conn) =>
+        this.query(conn, {
+          method: 'raw',
+          sql: 'KILL QUERY ?',
+          bindings: [connectionToKill.threadId],
+          options: {},
+        })
+      )
+      .finally(() => {
+        // NOT returning this promise because we want to release the connection
+        // in a non-blocking fashion
+        acquiringConn.then((conn) => this.releaseConnection(conn));
+      });
+  },
+});
+
+module.exports = Client_MySQL;

node_modules/knex/lib/dialects/mysql/query/compiler.js

@@ -0,0 +1,105 @@
+// MySQL Query Compiler
+// ------
+const inherits = require('inherits');
+const QueryCompiler = require('../../../query/compiler');
+
+const { identity } = require('lodash');
+
+function QueryCompiler_MySQL(client, builder) {
+  QueryCompiler.call(this, client, builder);
+
+  const { returning } = this.single;
+
+  if (returning) {
+    this.client.logger.warn(
+      '.returning() is not supported by mysql and will not have any effect.'
+    );
+  }
+}
+
+inherits(QueryCompiler_MySQL, QueryCompiler);
+
+Object.assign(QueryCompiler_MySQL.prototype, {
+  _emptyInsertValue: '() values ()',
+
+  // Update method, including joins, wheres, order & limits.
+  update() {
+    const join = this.join();
+    const updates = this._prepUpdate(this.single.update);
+    const where = this.where();
+    const order = this.order();
+    const limit = this.limit();
+    return (
+      `update ${this.tableName}` +
+      (join ? ` ${join}` : '') +
+      ' set ' +
+      updates.join(', ') +
+      (where ? ` ${where}` : '') +
+      (order ? ` ${order}` : '') +
+      (limit ? ` ${limit}` : '')
+    );
+  },
+
+  forUpdate() {
+    return 'for update';
+  },
+
+  forShare() {
+    return 'lock in share mode';
+  },
+
+  // Only supported on MySQL 8.0+
+  skipLocked() {
+    return 'skip locked';
+  },
+
+  // Supported on MySQL 8.0+ and MariaDB 10.3.0+
+  noWait() {
+    return 'nowait';
+  },
+
+  // Compiles a `columnInfo` query.
+  columnInfo() {
+    const column = this.single.columnInfo;
+
+    // The user may have specified a custom wrapIdentifier function in the config. We
+    // need to run the identifiers through that function, but not format them as
+    // identifiers otherwise.
+    const table = this.client.customWrapIdentifier(this.single.table, identity);
+
+    return {
+      sql:
+        'select * from information_schema.columns where table_name = ? and table_schema = ?',
+      bindings: [table, this.client.database()],
+      output(resp) {
+        const out = resp.reduce(function(columns, val) {
+          columns[val.COLUMN_NAME] = {
+            defaultValue: val.COLUMN_DEFAULT,
+            type: val.DATA_TYPE,
+            maxLength: val.CHARACTER_MAXIMUM_LENGTH,
+            nullable: val.IS_NULLABLE === 'YES',
+          };
+          return columns;
+        }, {});
+        return (column && out[column]) || out;
+      },
+    };
+  },
+
+  limit() {
+    const noLimit = !this.single.limit && this.single.limit !== 0;
+    if (noLimit && !this.single.offset) return '';
+
+    // Workaround for offset only.
+    // see: http://stackoverflow.com/questions/255517/mysql-offset-infinite-rows
+    const limit =
+      this.single.offset && noLimit
+        ? '18446744073709551615'
+        : this.formatter.parameter(this.single.limit);
+    return `limit ${limit}`;
+  },
+});
+
+// Set the QueryBuilder & QueryCompiler on the client object,
+// in case anyone wants to modify things to suit their own purposes.
+module.exports = QueryCompiler_MySQL;

node_modules/knex/lib/dialects/mysql/schema/columncompiler.js

@@ -0,0 +1,170 @@
+// MySQL Column Compiler
+// -------
+const inherits = require('inherits');
+const ColumnCompiler = require('../../../schema/columncompiler');
+
+const { isObject } = require('lodash');
+
+function ColumnCompiler_MySQL() {
+  ColumnCompiler.apply(this, arguments);
+  this.modifiers = [
+    'unsigned',
+    'nullable',
+    'defaultTo',
+    'comment',
+    'collate',
+    'first',
+    'after',
+  ];
+}
+inherits(ColumnCompiler_MySQL, ColumnCompiler);
+
+// Types
+// ------
+
+Object.assign(ColumnCompiler_MySQL.prototype, {
+  increments: 'int unsigned not null auto_increment primary key',
+
+  bigincrements: 'bigint unsigned not null auto_increment primary key',
+
+  bigint: 'bigint',
+
+  double(precision, scale) {
+    if (!precision) return 'double';
+    return `double(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
+  },
+
+  integer(length) {
+    length = length ? `(${this._num(length, 11)})` : '';
+    return `int${length}`;
+  },
+
+  mediumint: 'mediumint',
+
+  smallint: 'smallint',
+
+  tinyint(length) {
+    length = length ? `(${this._num(length, 1)})` : '';
+    return `tinyint${length}`;
+  },
+
+  text(column) {
+    switch (column) {
+      case 'medium':
+      case 'mediumtext':
+        return 'mediumtext';
+      case 'long':
+      case 'longtext':
+        return 'longtext';
+      default:
+        return 'text';
+    }
+  },
+
+  mediumtext() {
+    return this.text('medium');
+  },
+
+  longtext() {
+    return this.text('long');
+  },
+
+  enu(allowed) {
+    return `enum('${allowed.join("', '")}')`;
+  },
+
+  datetime(precision) {
+    if (isObject(precision)) {
+      ({ precision } = precision);
+    }
+
+    return typeof precision === 'number'
+      ? `datetime(${precision})`
+      : 'datetime';
+  },
+
+  timestamp(precision) {
+    if (isObject(precision)) {
+      ({ precision } = precision);
+    }
+
+    return typeof precision === 'number'
+      ? `timestamp(${precision})`
+      : 'timestamp';
+  },
+
+  time(precision) {
+    if (isObject(precision)) {
+      ({ precision } = precision);
+    }
+
+    return typeof precision === 'number' ? `time(${precision})` : 'time';
+  },
+
+  bit(length) {
+    return length ? `bit(${this._num(length)})` : 'bit';
+  },
+
+  binary(length) {
+    return length ? `varbinary(${this._num(length)})` : 'blob';
+  },
+
+  json() {
+    return 'json';
+  },
+
+  jsonb() {
+    return 'json';
+  },
+
+  // Modifiers
+  // ------
+
+  defaultTo(value) {
+    // MySQL defaults to null by default, but breaks down if you pass it explicitly
+    // Note that in MySQL versions up to 5.7, logic related to updating
+    // timestamps when no explicit value is passed is quite insane - https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_explicit_defaults_for_timestamp
+    if (value === null || value === undefined) {
+      return;
+    }
+    if ((this.type === 'json' || this.type === 'jsonb') && isObject(value)) {
+      // Default value for json will work only it is an expression
+      return `default ('${JSON.stringify(value)}')`;
+    }
+    const defaultVal = ColumnCompiler_MySQL.super_.prototype.defaultTo.apply(
+      this,
+      arguments
+    );
+    if (this.type !== 'blob' && this.type.indexOf('text') === -1) {
+      return defaultVal;
+    }
+    return '';
+  },
+
+  unsigned() {
+    return 'unsigned';
+  },
+
+  comment(comment) {
+    if (comment && comment.length > 255) {
+      this.client.logger.warn(
+        'Your comment is longer than the max comment length for MySQL'
+      );
+    }
+    return comment && `comment '${comment}'`;
+  },
+
+  first() {
+    return 'first';
+  },
+
+  after(column) {
+    return `after ${this.formatter.wrap(column)}`;
+  },
+
+  collate(collation) {
+    return collation && `collate '${collation}'`;
+  },
+});
+
+module.exports = ColumnCompiler_MySQL;

node_modules/knex/lib/dialects/mysql/schema/compiler.js

@@ -0,0 +1,60 @@
+// MySQL Schema Compiler
+// -------
+const inherits = require('inherits');
+const SchemaCompiler = require('../../../schema/compiler');
+
+const { some } = require('lodash');
+
+function SchemaCompiler_MySQL(client, builder) {
+  SchemaCompiler.call(this, client, builder);
+}
+inherits(SchemaCompiler_MySQL, SchemaCompiler);
+
+Object.assign(SchemaCompiler_MySQL.prototype, {
+  // Rename a table on the schema.
+  renameTable(tableName, to) {
+    this.pushQuery(
+      `rename table ${this.formatter.wrap(tableName)} to ${this.formatter.wrap(
+        to
+      )}`
+    );
+  },
+
+  // Check whether a table exists on the query.
+  hasTable(tableName) {
+    let sql = 'select * from information_schema.tables where table_name = ?';
+    const bindings = [tableName];
+
+    if (this.schema) {
+      sql += ' and table_schema = ?';
+      bindings.push(this.schema);
+    } else {
+      sql += ' and table_schema = database()';
+    }
+
+    this.pushQuery({
+      sql,
+      bindings,
+      output: function output(resp) {
+        return resp.length > 0;
+      },
+    });
+  },
+
+  // Check whether a column exists on the schema.
+  hasColumn(tableName, column) {
+    this.pushQuery({
+      sql: `show columns from ${this.formatter.wrap(tableName)}`,
+      output(resp) {
+        return some(resp, (row) => {
+          return (
+            this.client.wrapIdentifier(row.Field) ===
+            this.client.wrapIdentifier(column)
+          );
+        });
+      },
+    });
+  },
+});
+
+module.exports = SchemaCompiler_MySQL;

node_modules/knex/lib/dialects/mysql/schema/tablecompiler.js

@@ -0,0 +1,262 @@
+/* eslint max-len:0 no-console:0*/
+
+// MySQL Table Builder & Compiler
+// -------
+const inherits = require('inherits');
+const TableCompiler = require('../../../schema/tablecompiler');
+
+// Table Compiler
+// ------
+
+function TableCompiler_MySQL() {
+  TableCompiler.apply(this, arguments);
+}
+
+inherits(TableCompiler_MySQL, TableCompiler);
+
+Object.assign(TableCompiler_MySQL.prototype, {
+  createQuery(columns, ifNot) {
+    const createStatement = ifNot
+      ? 'create table if not exists '
+      : 'create table ';
+    const { client } = this;
+    let conn = {};
+    let sql =
+      createStatement + this.tableName() + ' (' + columns.sql.join(', ') + ')';
+
+    // Check if the connection settings are set.
+    if (client.connectionSettings) {
+      conn = client.connectionSettings;
+    }
+
+    const charset = this.single.charset || conn.charset || '';
+    const collation = this.single.collate || conn.collate || '';
+    const engine = this.single.engine || '';
+
+    // var conn = builder.client.connectionSettings;
+    if (charset) sql += ` default character set ${charset}`;
+    if (collation) sql += ` collate ${collation}`;
+    if (engine) sql += ` engine = ${engine}`;
+
+    if (this.single.comment) {
+      const comment = this.single.comment || '';
+      if (comment.length > 60)
+        this.client.logger.warn(
+          'The max length for a table comment is 60 characters'
+        );
+      sql += ` comment = '${comment}'`;
+    }
+
+    this.pushQuery(sql);
+  },
+
+  addColumnsPrefix: 'add ',
+
+  alterColumnsPrefix: 'modify ',
+
+  dropColumnPrefix: 'drop ',
+
+  // Compiles the comment on the table.
+  comment(comment) {
+    this.pushQuery(`alter table ${this.tableName()} comment = '${comment}'`);
+  },
+
+  changeType() {
+    // alter table + table + ' modify ' + wrapped + '// type';
+  },
+
+  // Renames a column on the table.
+  renameColumn(from, to) {
+    const compiler = this;
+    const table = this.tableName();
+    const wrapped = this.formatter.wrap(from) + ' ' + this.formatter.wrap(to);
+
+    this.pushQuery({
+      sql:
+        `show fields from ${table} where field = ` +
+        this.formatter.parameter(from),
+      output(resp) {
+        const column = resp[0];
+        const runner = this;
+        return compiler.getFKRefs(runner).then(([refs]) =>
+          new Promise((resolve, reject) => {
+            try {
+              if (!refs.length) {
+                resolve();
+              }
+              resolve(compiler.dropFKRefs(runner, refs));
+            } catch (e) {
+              reject(e);
+            }
+          })
+            .then(function() {
+              let sql = `alter table ${table} change ${wrapped} ${column.Type}`;
+
+              if (String(column.Null).toUpperCase() !== 'YES') {
+                sql += ` NOT NULL`;
+              } else {
+                // This doesn't matter for most cases except Timestamp, where this is important
+                sql += ` NULL`;
+              }
+              if (column.Default !== void 0 && column.Default !== null) {
+                sql += ` DEFAULT '${column.Default}'`;
+              }
+
+              return runner.query({
+                sql,
+              });
+            })
+            .then(function() {
+              if (!refs.length) {
+                return;
+              }
+              return compiler.createFKRefs(
+                runner,
+                refs.map(function(ref) {
+                  if (ref.REFERENCED_COLUMN_NAME === from) {
+                    ref.REFERENCED_COLUMN_NAME = to;
+                  }
+                  if (ref.COLUMN_NAME === from) {
+                    ref.COLUMN_NAME = to;
+                  }
+                  return ref;
+                })
+              );
+            })
+        );
+      },
+    });
+  },
+
+  getFKRefs(runner) {
+    const formatter = this.client.formatter(this.tableBuilder);
+    const sql =
+      'SELECT KCU.CONSTRAINT_NAME, KCU.TABLE_NAME, KCU.COLUMN_NAME, ' +
+      '       KCU.REFERENCED_TABLE_NAME, KCU.REFERENCED_COLUMN_NAME, ' +
+      '       RC.UPDATE_RULE, RC.DELETE_RULE ' +
+      'FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS KCU ' +
+      'JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS AS RC ' +
+      '       USING(CONSTRAINT_NAME)' +
+      'WHERE KCU.REFERENCED_TABLE_NAME = ' +
+      formatter.parameter(this.tableNameRaw) +
+      ' ' +
+      '  AND KCU.CONSTRAINT_SCHEMA = ' +
+      formatter.parameter(this.client.database()) +
+      ' ' +
+      '  AND RC.CONSTRAINT_SCHEMA = ' +
+      formatter.parameter(this.client.database());
+
+    return runner.query({
+      sql,
+      bindings: formatter.bindings,
+    });
+  },
+
+  dropFKRefs(runner, refs) {
+    const formatter = this.client.formatter(this.tableBuilder);
+
+    return Promise.all(
+      refs.map(function(ref) {
+        const constraintName = formatter.wrap(ref.CONSTRAINT_NAME);
+        const tableName = formatter.wrap(ref.TABLE_NAME);
+        return runner.query({
+          sql: `alter table ${tableName} drop foreign key ${constraintName}`,
+        });
+      })
+    );
+  },
+  createFKRefs(runner, refs) {
+    const formatter = this.client.formatter(this.tableBuilder);
+
+    return Promise.all(
+      refs.map(function(ref) {
+        const tableName = formatter.wrap(ref.TABLE_NAME);
+        const keyName = formatter.wrap(ref.CONSTRAINT_NAME);
+        const column = formatter.columnize(ref.COLUMN_NAME);
+        const references = formatter.columnize(ref.REFERENCED_COLUMN_NAME);
+        const inTable = formatter.wrap(ref.REFERENCED_TABLE_NAME);
+        const onUpdate = ` ON UPDATE ${ref.UPDATE_RULE}`;
+        const onDelete = ` ON DELETE ${ref.DELETE_RULE}`;
+
+        return runner.query({
+          sql:
+            `alter table ${tableName} add constraint ${keyName} ` +
+            'foreign key (' +
+            column +
+            ') references ' +
+            inTable +
+            ' (' +
+            references +
+            ')' +
+            onUpdate +
+            onDelete,
+        });
+      })
+    );
+  },
+  index(columns, indexName, indexType) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('index', this.tableNameRaw, columns);
+    this.pushQuery(
+      `alter table ${this.tableName()} add${
+        indexType ? ` ${indexType}` : ''
+      } index ${indexName}(${this.formatter.columnize(columns)})`
+    );
+  },
+
+  primary(columns, constraintName) {
+    constraintName = constraintName
+      ? this.formatter.wrap(constraintName)
+      : this.formatter.wrap(`${this.tableNameRaw}_pkey`);
+    this.pushQuery(
+      `alter table ${this.tableName()} add primary key ${constraintName}(${this.formatter.columnize(
+        columns
+      )})`
+    );
+  },
+
+  unique(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('unique', this.tableNameRaw, columns);
+    this.pushQuery(
+      `alter table ${this.tableName()} add unique ${indexName}(${this.formatter.columnize(
+        columns
+      )})`
+    );
+  },
+
+  // Compile a drop index command.
+  dropIndex(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('index', this.tableNameRaw, columns);
+    this.pushQuery(`alter table ${this.tableName()} drop index ${indexName}`);
+  },
+
+  // Compile a drop foreign key command.
+  dropForeign(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('foreign', this.tableNameRaw, columns);
+    this.pushQuery(
+      `alter table ${this.tableName()} drop foreign key ${indexName}`
+    );
+  },
+
+  // Compile a drop primary key command.
+  dropPrimary() {
+    this.pushQuery(`alter table ${this.tableName()} drop primary key`);
+  },
+
+  // Compile a drop unique key command.
+  dropUnique(column, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('unique', this.tableNameRaw, column);
+    this.pushQuery(`alter table ${this.tableName()} drop index ${indexName}`);
+  },
+});
+
+module.exports = TableCompiler_MySQL;

node_modules/knex/lib/dialects/mysql/transaction.js

@@ -0,0 +1,50 @@
+const Transaction = require('../../transaction');
+const Debug = require('debug');
+const { isUndefined } = require('lodash');
+
+const debug = Debug('knex:tx');
+
+class Transaction_MySQL extends Transaction {}
+
+Object.assign(Transaction_MySQL.prototype, {
+  query(conn, sql, status, value) {
+    const t = this;
+    const q = this.trxClient
+      .query(conn, sql)
+      .catch(
+        (err) => err.errno === 1305,
+        () => {
+          this.trxClient.logger.warn(
+            'Transaction was implicitly committed, do not mix transactions and ' +
+              'DDL with MySQL (#805)'
+          );
+        }
+      )
+      .catch(function(err) {
+        status = 2;
+        value = err;
+        t._completed = true;
+        debug('%s error running transaction query', t.txid);
+      })
+      .then(function(res) {
+        if (status === 1) t._resolver(value);
+        if (status === 2) {
+          if (isUndefined(value)) {
+            if (t.doNotRejectOnRollback && /^ROLLBACK\b/i.test(sql)) {
+              t._resolver();
+              return;
+            }
+            value = new Error(`Transaction rejected with non-error: ${value}`);
+          }
+          t._rejecter(value);
+        }
+        return res;
+      });
+    if (status === 1 || status === 2) {
+      t._completed = true;
+    }
+    return q;
+  },
+});
+
+module.exports = Transaction_MySQL;

node_modules/knex/lib/dialects/mysql2/index.js

@@ -0,0 +1,35 @@
+// MySQL2 Client
+// -------
+const inherits = require('inherits');
+const Client_MySQL = require('../mysql');
+const Transaction = require('./transaction');
+
+// Always initialize with the "QueryBuilder" and "QueryCompiler"
+// objects, which extend the base 'lib/query/builder' and
+// 'lib/query/compiler', respectively.
+function Client_MySQL2(config) {
+  Client_MySQL.call(this, config);
+}
+inherits(Client_MySQL2, Client_MySQL);
+
+Object.assign(Client_MySQL2.prototype, {
+  // The "dialect", for reference elsewhere.
+  driverName: 'mysql2',
+
+  transaction() {
+    return new Transaction(this, ...arguments);
+  },
+
+  _driver() {
+    return require('mysql2');
+  },
+
+  validateConnection(connection) {
+    if (connection._fatalError) {
+      return false;
+    }
+    return true;
+  },
+});
+
+module.exports = Client_MySQL2;

node_modules/knex/lib/dialects/mysql2/transaction.js

@@ -0,0 +1,49 @@
+const Transaction = require('../../transaction');
+const debug = require('debug')('knex:tx');
+
+const { isUndefined } = require('lodash');
+
+class Transaction_MySQL2 extends Transaction {}
+
+Object.assign(Transaction_MySQL2.prototype, {
+  query(conn, sql, status, value) {
+    const t = this;
+    const q = this.trxClient
+      .query(conn, sql)
+      .catch(
+        (err) => err.code === 'ER_SP_DOES_NOT_EXIST',
+        () => {
+          this.trxClient.logger.warn(
+            'Transaction was implicitly committed, do not mix transactions and ' +
+              'DDL with MySQL (#805)'
+          );
+        }
+      )
+      .catch(function(err) {
+        status = 2;
+        value = err;
+        t._completed = true;
+        debug('%s error running transaction query', t.txid);
+      })
+      .then(function(res) {
+        if (status === 1) t._resolver(value);
+        if (status === 2) {
+          if (isUndefined(value)) {
+            if (t.doNotRejectOnRollback && /^ROLLBACK\b/i.test(sql)) {
+              t._resolver();
+              return;
+            }
+            value = new Error(`Transaction rejected with non-error: ${value}`);
+          }
+          t._rejecter(value);
+          return res;
+        }
+      });
+    if (status === 1 || status === 2) {
+      t._completed = true;
+    }
+    return q;
+  },
+});
+
+module.exports = Transaction_MySQL2;

node_modules/knex/lib/dialects/oracle/formatter.js

@@ -0,0 +1,20 @@
+const Formatter = require('../../formatter');
+const { ReturningHelper } = require('./utils');
+
+class Oracle_Formatter extends Formatter {
+  alias(first, second) {
+    return first + ' ' + second;
+  }
+
+  parameter(value, notSetValue) {
+    // Returning helper uses always ROWID as string
+    if (value instanceof ReturningHelper && this.client.driver) {
+      value = new this.client.driver.OutParam(this.client.driver.OCCISTRING);
+    } else if (typeof value === 'boolean') {
+      value = value ? 1 : 0;
+    }
+    return super.parameter(value, notSetValue);
+  }
+}
+
+module.exports = Oracle_Formatter;

node_modules/knex/lib/dialects/oracle/index.js

@@ -0,0 +1,196 @@
+// Oracle Client
+// -------
+const { map, flatten, values } = require('lodash');
+const { promisify } = require('util');
+
+const inherits = require('inherits');
+const Client = require('../../client');
+const Bluebird = require('bluebird');
+const { bufferToString } = require('../../query/string');
+const Formatter = require('./formatter');
+
+const Transaction = require('./transaction');
+const QueryCompiler = require('./query/compiler');
+const SchemaCompiler = require('./schema/compiler');
+const ColumnBuilder = require('./schema/columnbuilder');
+const ColumnCompiler = require('./schema/columncompiler');
+const TableCompiler = require('./schema/tablecompiler');
+const { ReturningHelper, isConnectionError } = require('./utils');
+
+// Always initialize with the "QueryBuilder" and "QueryCompiler"
+// objects, which extend the base 'lib/query/builder' and
+// 'lib/query/compiler', respectively.
+function Client_Oracle(config) {
+  Client.call(this, config);
+}
+
+inherits(Client_Oracle, Client);
+
+Object.assign(Client_Oracle.prototype, {
+  dialect: 'oracle',
+
+  driverName: 'oracle',
+
+  _driver() {
+    return require('oracle');
+  },
+
+  transaction() {
+    return new Transaction(this, ...arguments);
+  },
+
+  formatter() {
+    return new Formatter(this, ...arguments);
+  },
+
+  queryCompiler() {
+    return new QueryCompiler(this, ...arguments);
+  },
+
+  schemaCompiler() {
+    return new SchemaCompiler(this, ...arguments);
+  },
+
+  columnBuilder() {
+    return new ColumnBuilder(this, ...arguments);
+  },
+
+  columnCompiler() {
+    return new ColumnCompiler(this, ...arguments);
+  },
+
+  tableCompiler() {
+    return new TableCompiler(this, ...arguments);
+  },
+
+  prepBindings(bindings) {
+    return map(bindings, (value) => {
+      // returning helper uses always ROWID as string
+      if (value instanceof ReturningHelper && this.driver) {
+        return new this.driver.OutParam(this.driver.OCCISTRING);
+      } else if (typeof value === 'boolean') {
+        return value ? 1 : 0;
+      } else if (Buffer.isBuffer(value)) {
+        return bufferToString(value);
+      }
+      return value;
+    });
+  },
+
+  // Get a raw connection, called by the `pool` whenever a new
+  // connection needs to be added to the pool.
+  acquireRawConnection() {
+    return new Bluebird((resolver, rejecter) => {
+      this.driver.connect(this.connectionSettings, (err, connection) => {
+        if (err) return rejecter(err);
+        Bluebird.promisifyAll(connection);
+        if (this.connectionSettings.prefetchRowCount) {
+          connection.setPrefetchRowCount(
+            this.connectionSettings.prefetchRowCount
+          );
+        }
+        resolver(connection);
+      });
+    });
+  },
+
+  // Used to explicitly close a connection, called internally by the pool
+  // when a connection times out or the pool is shutdown.
+  async destroyRawConnection(connection) {
+    const close = promisify((cb) => connection.close(cb));
+    return close();
+  },
+
+  // Return the database for the Oracle client.
+  database() {
+    return this.connectionSettings.database;
+  },
+
+  // Position the bindings for the query.
+  positionBindings(sql) {
+    let questionCount = 0;
+    return sql.replace(/\?/g, function() {
+      questionCount += 1;
+      return `:${questionCount}`;
+    });
+  },
+
+  _stream(connection, obj, stream, options) {
+    return new Bluebird(function(resolver, rejecter) {
+      stream.on('error', (err) => {
+        if (isConnectionError(err)) {
+          connection.__knex__disposed = err;
+        }
+        rejecter(err);
+      });
+      stream.on('end', resolver);
+      const queryStream = connection.queryStream(
+        obj.sql,
+        obj.bindings,
+        options
+      );
+      queryStream.pipe(stream);
+      queryStream.on('error', function(error) {
+        rejecter(error);
+        stream.emit('error', error);
+      });
+    });
+  },
+
+  // Runs the query on the specified connection, providing the bindings
+  // and any other necessary prep work.
+  _query(connection, obj) {
+    if (!obj.sql) throw new Error('The query is empty');
+
+    return connection
+      .executeAsync(obj.sql, obj.bindings)
+      .then(function(response) {
+        if (!obj.returning) return response;
+        const rowIds = obj.outParams.map(
+          (v, i) => response[`returnParam${i ? i : ''}`]
+        );
+        return connection.executeAsync(obj.returningSql, rowIds);
+      })
+      .then(function(response) {
+        obj.response = response;
+        obj.rowsAffected = response.updateCount;
+        return obj;
+      })
+      .catch((err) => {
+        if (isConnectionError(err)) {
+          connection.__knex__disposed = err;
+        }
+        throw err;
+      });
+  },
+
+  // Process the response as returned from the query.
+  processResponse(obj, runner) {
+    let { response } = obj;
+    const { method } = obj;
+    if (obj.output) return obj.output.call(runner, response);
+    switch (method) {
+      case 'select':
+      case 'pluck':
+      case 'first':
+        if (obj.method === 'pluck') response = map(response, obj.pluck);
+        return obj.method === 'first' ? response[0] : response;
+      case 'insert':
+      case 'del':
+      case 'update':
+      case 'counter':
+        if (obj.returning) {
+          if (obj.returning.length > 1 || obj.returning[0] === '*') {
+            return response;
+          }
+          // return an array with values if only one returning value was specified
+          return flatten(map(response, values));
+        }
+        return obj.rowsAffected;
+      default:
+        return response;
+    }
+  },
+});
+
+module.exports = Client_Oracle;

node_modules/knex/lib/dialects/oracle/query/compiler.js

@@ -0,0 +1,325 @@
+/* eslint max-len:0 */
+
+// Oracle Query Builder & Compiler
+// ------
+const {
+  assign,
+  isPlainObject,
+  isEmpty,
+  isString,
+  map,
+  reduce,
+  compact,
+  identity,
+} = require('lodash');
+const inherits = require('inherits');
+const QueryCompiler = require('../../../query/compiler');
+const { ReturningHelper } = require('../utils');
+
+const components = [
+  'columns',
+  'join',
+  'where',
+  'union',
+  'group',
+  'having',
+  'order',
+  'lock',
+];
+
+// Query Compiler
+// -------
+
+// Set the "Formatter" to use for the queries,
+// ensuring that all parameterized values (even across sub-queries)
+// are properly built into the same query.
+function QueryCompiler_Oracle(client, builder) {
+  QueryCompiler.call(this, client, builder);
+}
+
+inherits(QueryCompiler_Oracle, QueryCompiler);
+
+assign(QueryCompiler_Oracle.prototype, {
+  // Compiles an "insert" query, allowing for multiple
+  // inserts using a single query statement.
+  insert() {
+    let insertValues = this.single.insert || [];
+    let { returning } = this.single;
+
+    if (!Array.isArray(insertValues) && isPlainObject(this.single.insert)) {
+      insertValues = [this.single.insert];
+    }
+
+    // always wrap returning argument in array
+    if (returning && !Array.isArray(returning)) {
+      returning = [returning];
+    }
+
+    if (
+      Array.isArray(insertValues) &&
+      insertValues.length === 1 &&
+      isEmpty(insertValues[0])
+    ) {
+      return this._addReturningToSqlAndConvert(
+        `insert into ${this.tableName} (${this.formatter.wrap(
+          this.single.returning
+        )}) values (default)`,
+        returning,
+        this.tableName
+      );
+    }
+
+    if (
+      isEmpty(this.single.insert) &&
+      typeof this.single.insert !== 'function'
+    ) {
+      return '';
+    }
+
+    const insertData = this._prepInsert(insertValues);
+
+    const sql = {};
+
+    if (isString(insertData)) {
+      return this._addReturningToSqlAndConvert(
+        `insert into ${this.tableName} ${insertData}`,
+        returning
+      );
+    }
+
+    if (insertData.values.length === 1) {
+      return this._addReturningToSqlAndConvert(
+        `insert into ${this.tableName} (${this.formatter.columnize(
+          insertData.columns
+        )}) values (${this.formatter.parameterize(insertData.values[0])})`,
+        returning,
+        this.tableName
+      );
+    }
+
+    const insertDefaultsOnly = insertData.columns.length === 0;
+
+    sql.sql =
+      'begin ' +
+      map(insertData.values, (value) => {
+        let returningHelper;
+        const parameterizedValues = !insertDefaultsOnly
+          ? this.formatter.parameterize(value, this.client.valueForUndefined)
+          : '';
+        const returningValues = Array.isArray(returning)
+          ? returning
+          : [returning];
+        let subSql = `insert into ${this.tableName} `;
+
+        if (returning) {
+          returningHelper = new ReturningHelper(returningValues.join(':'));
+          sql.outParams = (sql.outParams || []).concat(returningHelper);
+        }
+
+        if (insertDefaultsOnly) {
+          // no columns given so only the default value
+          subSql += `(${this.formatter.wrap(
+            this.single.returning
+          )}) values (default)`;
+        } else {
+          subSql += `(${this.formatter.columnize(
+            insertData.columns
+          )}) values (${parameterizedValues})`;
+        }
+        subSql += returning
+          ? ` returning ROWID into ${this.formatter.parameter(returningHelper)}`
+          : '';
+
+        // pre bind position because subSql is an execute immediate parameter
+        // later position binding will only convert the ? params
+
+        subSql = this.formatter.client.positionBindings(subSql);
+
+        const parameterizedValuesWithoutDefault = parameterizedValues
+          .replace('DEFAULT, ', '')
+          .replace(', DEFAULT', '');
+        return (
+          `execute immediate '${subSql.replace(/'/g, "''")}` +
+          (parameterizedValuesWithoutDefault || returning ? "' using " : '') +
+          parameterizedValuesWithoutDefault +
+          (parameterizedValuesWithoutDefault && returning ? ', ' : '') +
+          (returning ? 'out ?' : '') +
+          ';'
+        );
+      }).join(' ') +
+      'end;';
+
+    if (returning) {
+      sql.returning = returning;
+      // generate select statement with special order by to keep the order because 'in (..)' may change the order
+      sql.returningSql =
+        `select ${this.formatter.columnize(returning)}` +
+        ' from ' +
+        this.tableName +
+        ' where ROWID in (' +
+        sql.outParams.map((v, i) => `:${i + 1}`).join(', ') +
+        ')' +
+        ' order by case ROWID ' +
+        sql.outParams
+          .map((v, i) => `when CHARTOROWID(:${i + 1}) then ${i}`)
+          .join(' ') +
+        ' end';
+    }
+
+    return sql;
+  },
+
+  // Update method, including joins, wheres, order & limits.
+  update() {
+    const updates = this._prepUpdate(this.single.update);
+    const where = this.where();
+    let { returning } = this.single;
+    const sql =
+      `update ${this.tableName}` +
+      ' set ' +
+      updates.join(', ') +
+      (where ? ` ${where}` : '');
+
+    if (!returning) {
+      return sql;
+    }
+
+    // always wrap returning argument in array
+    if (!Array.isArray(returning)) {
+      returning = [returning];
+    }
+
+    return this._addReturningToSqlAndConvert(sql, returning, this.tableName);
+  },
+
+  // Compiles a `truncate` query.
+  truncate() {
+    return `truncate table ${this.tableName}`;
+  },
+
+  forUpdate() {
+    return 'for update';
+  },
+
+  forShare() {
+    // lock for share is not directly supported by oracle
+    // use LOCK TABLE .. IN SHARE MODE; instead
+    this.client.logger.warn(
+      'lock for share is not supported by oracle dialect'
+    );
+    return '';
+  },
+
+  // Compiles a `columnInfo` query.
+  columnInfo() {
+    const column = this.single.columnInfo;
+
+    // The user may have specified a custom wrapIdentifier function in the config. We
+    // need to run the identifiers through that function, but not format them as
+    // identifiers otherwise.
+    const table = this.client.customWrapIdentifier(this.single.table, identity);
+
+    // Node oracle drivers doesn't support LONG type (which is data_default type)
+    const sql = `select * from xmltable( '/ROWSET/ROW'
+      passing dbms_xmlgen.getXMLType('
+      select char_col_decl_length, column_name, data_type, data_default, nullable
+      from user_tab_columns where table_name = ''${table}'' ')
+      columns
+      CHAR_COL_DECL_LENGTH number, COLUMN_NAME varchar2(200), DATA_TYPE varchar2(106),
+      DATA_DEFAULT clob, NULLABLE varchar2(1))`;
+
+    return {
+      sql: sql,
+      output(resp) {
+        const out = reduce(
+          resp,
+          function(columns, val) {
+            columns[val.COLUMN_NAME] = {
+              type: val.DATA_TYPE,
+              defaultValue: val.DATA_DEFAULT,
+              maxLength: val.CHAR_COL_DECL_LENGTH,
+              nullable: val.NULLABLE === 'Y',
+            };
+            return columns;
+          },
+          {}
+        );
+        return (column && out[column]) || out;
+      },
+    };
+  },
+
+  select() {
+    let query = this.with();
+    const statements = map(components, (component) => {
+      return this[component]();
+    });
+    query += compact(statements).join(' ');
+    return this._surroundQueryWithLimitAndOffset(query);
+  },
+
+  aggregate(stmt) {
+    return this._aggregate(stmt, { aliasSeparator: ' ' });
+  },
+
+  // for single commands only
+  _addReturningToSqlAndConvert(sql, returning, tableName) {
+    const res = {
+      sql,
+    };
+
+    if (!returning) {
+      return res;
+    }
+
+    const returningValues = Array.isArray(returning) ? returning : [returning];
+    const returningHelper = new ReturningHelper(returningValues.join(':'));
+    res.sql =
+      sql +
+      ' returning ROWID into ' +
+      this.formatter.parameter(returningHelper);
+    res.returningSql = `select ${this.formatter.columnize(
+      returning
+    )} from ${tableName} where ROWID = :1`;
+    res.outParams = [returningHelper];
+    res.returning = returning;
+    return res;
+  },
+
+  _surroundQueryWithLimitAndOffset(query) {
+    let { limit } = this.single;
+    const { offset } = this.single;
+    const hasLimit = limit || limit === 0 || limit === '0';
+    limit = +limit;
+
+    if (!hasLimit && !offset) return query;
+    query = query || '';
+
+    if (hasLimit && !offset) {
+      return `select * from (${query}) where rownum <= ${this.formatter.parameter(
+        limit
+      )}`;
+    }
+
+    const endRow = +offset + (hasLimit ? limit : 10000000000000);
+
+    return (
+      'select * from ' +
+      '(select row_.*, ROWNUM rownum_ from (' +
+      query +
+      ') row_ ' +
+      'where rownum <= ' +
+      this.formatter.parameter(endRow) +
+      ') ' +
+      'where rownum_ > ' +
+      this.formatter.parameter(offset)
+    );
+  },
+});
+
+// Compiles the `select` statement, or nested sub-selects
+// by calling each of the component compilers, trimming out
+// the empties, and returning a generated query string.
+QueryCompiler_Oracle.prototype.first = QueryCompiler_Oracle.prototype.select;
+
+module.exports = QueryCompiler_Oracle;

node_modules/knex/lib/dialects/oracle/schema/columnbuilder.js

@@ -0,0 +1,18 @@
+const inherits = require('inherits');
+const ColumnBuilder = require('../../../schema/columnbuilder');
+
+const { toArray } = require('lodash');
+
+function ColumnBuilder_Oracle() {
+  ColumnBuilder.apply(this, arguments);
+}
+inherits(ColumnBuilder_Oracle, ColumnBuilder);
+
+// checkIn added to the builder to allow the column compiler to change the
+// order via the modifiers ("check" must be after "default")
+ColumnBuilder_Oracle.prototype.checkIn = function() {
+  this._modifiers.checkIn = toArray(arguments);
+  return this;
+};
+
+module.exports = ColumnBuilder_Oracle;

node_modules/knex/lib/dialects/oracle/schema/columncompiler.js

@@ -0,0 +1,139 @@
+const { uniq, map } = require('lodash');
+const inherits = require('inherits');
+const Raw = require('../../../raw');
+const ColumnCompiler = require('../../../schema/columncompiler');
+const Trigger = require('./trigger');
+
+// Column Compiler
+// -------
+
+function ColumnCompiler_Oracle() {
+  ColumnCompiler.apply(this, arguments);
+  this.modifiers = ['defaultTo', 'checkIn', 'nullable', 'comment'];
+}
+inherits(ColumnCompiler_Oracle, ColumnCompiler);
+
+Object.assign(ColumnCompiler_Oracle.prototype, {
+  // helper function for pushAdditional in increments() and bigincrements()
+  _createAutoIncrementTriggerAndSequence() {
+    // TODO Add warning that sequence etc is created
+    this.pushAdditional(function() {
+      const tableName = this.tableCompiler.tableNameRaw;
+      const createTriggerSQL = Trigger.createAutoIncrementTrigger(
+        this.client.logger,
+        tableName
+      );
+      this.pushQuery(createTriggerSQL);
+    });
+  },
+
+  increments() {
+    this._createAutoIncrementTriggerAndSequence();
+    return 'integer not null primary key';
+  },
+
+  bigincrements() {
+    this._createAutoIncrementTriggerAndSequence();
+    return 'number(20, 0) not null primary key';
+  },
+
+  floating(precision) {
+    const parsedPrecision = this._num(precision, 0);
+    return `float${parsedPrecision ? `(${parsedPrecision})` : ''}`;
+  },
+
+  double(precision, scale) {
+    // if (!precision) return 'number'; // TODO: Check If default is ok
+    return `number(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
+  },
+
+  decimal(precision, scale) {
+    if (precision === null) return 'decimal';
+    return `decimal(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
+  },
+
+  integer(length) {
+    return length ? `number(${this._num(length, 11)})` : 'integer';
+  },
+
+  tinyint: 'smallint',
+
+  smallint: 'smallint',
+
+  mediumint: 'integer',
+
+  biginteger: 'number(20, 0)',
+
+  text: 'clob',
+
+  enu(allowed) {
+    allowed = uniq(allowed);
+    const maxLength = (allowed || []).reduce(
+      (maxLength, name) => Math.max(maxLength, String(name).length),
+      1
+    );
+
+    // implicitly add the enum values as checked values
+    this.columnBuilder._modifiers.checkIn = [allowed];
+
+    return `varchar2(${maxLength})`;
+  },
+
+  time: 'timestamp with time zone',
+
+  datetime(without) {
+    return without ? 'timestamp' : 'timestamp with time zone';
+  },
+
+  timestamp(without) {
+    return without ? 'timestamp' : 'timestamp with time zone';
+  },
+
+  bit: 'clob',
+
+  json: 'clob',
+
+  bool() {
+    // implicitly add the check for 0 and 1
+    this.columnBuilder._modifiers.checkIn = [[0, 1]];
+    return 'number(1, 0)';
+  },
+
+  varchar(length) {
+    return `varchar2(${this._num(length, 255)})`;
+  },
+
+  // Modifiers
+  // ------
+
+  comment(comment) {
+    const columnName = this.args[0] || this.defaults('columnName');
+
+    this.pushAdditional(function() {
+      this.pushQuery(
+        `comment on column ${this.tableCompiler.tableName()}.` +
+          this.formatter.wrap(columnName) +
+          " is '" +
+          (comment || '') +
+          "'"
+      );
+    }, comment);
+  },
+
+  checkIn(value) {
+    // TODO: Maybe accept arguments also as array
+    // TODO: value(s) should be escaped properly
+    if (value === undefined) {
+      return '';
+    } else if (value instanceof Raw) {
+      value = value.toQuery();
+    } else if (Array.isArray(value)) {
+      value = map(value, (v) => `'${v}'`).join(', ');
+    } else {
+      value = `'${value}'`;
+    }
+    return `check (${this.formatter.wrap(this.args[0])} in (${value}))`;
+  },
+});
+
+module.exports = ColumnCompiler_Oracle;

node_modules/knex/lib/dialects/oracle/schema/compiler.js

@@ -0,0 +1,81 @@
+// Oracle Schema Compiler
+// -------
+const inherits = require('inherits');
+const SchemaCompiler = require('../../../schema/compiler');
+const utils = require('../utils');
+const Trigger = require('./trigger');
+
+function SchemaCompiler_Oracle() {
+  SchemaCompiler.apply(this, arguments);
+}
+inherits(SchemaCompiler_Oracle, SchemaCompiler);
+
+// Rename a table on the schema.
+SchemaCompiler_Oracle.prototype.renameTable = function(tableName, to) {
+  const renameTable = Trigger.renameTableAndAutoIncrementTrigger(
+    this.client.logger,
+    tableName,
+    to
+  );
+  this.pushQuery(renameTable);
+};
+
+// Check whether a table exists on the query.
+SchemaCompiler_Oracle.prototype.hasTable = function(tableName) {
+  this.pushQuery({
+    sql:
+      'select TABLE_NAME from USER_TABLES where TABLE_NAME = ' +
+      this.formatter.parameter(tableName),
+    output(resp) {
+      return resp.length > 0;
+    },
+  });
+};
+
+// Check whether a column exists on the schema.
+SchemaCompiler_Oracle.prototype.hasColumn = function(tableName, column) {
+  const sql =
+    `select COLUMN_NAME from USER_TAB_COLUMNS ` +
+    `where TABLE_NAME = ${this.formatter.parameter(tableName)} ` +
+    `and COLUMN_NAME = ${this.formatter.parameter(column)}`;
+  this.pushQuery({ sql, output: (resp) => resp.length > 0 });
+};
+
+SchemaCompiler_Oracle.prototype.dropSequenceIfExists = function(sequenceName) {
+  this.pushQuery(
+    utils.wrapSqlWithCatch(
+      `drop sequence ${this.formatter.wrap(sequenceName)}`,
+      -2289
+    )
+  );
+};
+
+SchemaCompiler_Oracle.prototype._dropRelatedSequenceIfExists = function(
+  tableName
+) {
+  // removing the sequence that was possibly generated by increments() column
+  const sequenceName = utils.generateCombinedName(
+    this.client.logger,
+    'seq',
+    tableName
+  );
+  this.dropSequenceIfExists(sequenceName);
+};
+
+SchemaCompiler_Oracle.prototype.dropTable = function(tableName) {
+  this.pushQuery(`drop table ${this.formatter.wrap(tableName)}`);
+
+  // removing the sequence that was possibly generated by increments() column
+  this._dropRelatedSequenceIfExists(tableName);
+};
+
+SchemaCompiler_Oracle.prototype.dropTableIfExists = function(tableName) {
+  this.pushQuery(
+    utils.wrapSqlWithCatch(`drop table ${this.formatter.wrap(tableName)}`, -942)
+  );
+
+  // removing the sequence that was possibly generated by increments() column
+  this._dropRelatedSequenceIfExists(tableName);
+};
+
+module.exports = SchemaCompiler_Oracle;

node_modules/knex/lib/dialects/oracle/schema/tablecompiler.js

@@ -0,0 +1,167 @@
+/* eslint max-len:0 */
+
+const inherits = require('inherits');
+const utils = require('../utils');
+const TableCompiler = require('../../../schema/tablecompiler');
+const helpers = require('../../../helpers');
+const Trigger = require('./trigger');
+
+const { map } = require('lodash');
+
+// Table Compiler
+// ------
+
+function TableCompiler_Oracle() {
+  TableCompiler.apply(this, arguments);
+}
+inherits(TableCompiler_Oracle, TableCompiler);
+
+Object.assign(TableCompiler_Oracle.prototype, {
+  addColumns(columns, prefix) {
+    if (columns.sql.length > 0) {
+      prefix = prefix || this.addColumnsPrefix;
+
+      const columnSql = map(columns.sql, (column) => column);
+      const alter = this.lowerCase ? 'alter table ' : 'ALTER TABLE ';
+
+      let sql = `${alter}${this.tableName()} ${prefix}`;
+      if (columns.sql.length > 1) {
+        sql += `(${columnSql.join(', ')})`;
+      } else {
+        sql += columnSql.join(', ');
+      }
+
+      this.pushQuery({
+        sql,
+        bindings: columns.bindings,
+      });
+    }
+  },
+
+  // Compile a rename column command.
+  renameColumn(from, to) {
+    // Remove quotes around tableName
+    const tableName = this.tableName().slice(1, -1);
+    return this.pushQuery(
+      Trigger.renameColumnTrigger(this.client.logger, tableName, from, to)
+    );
+  },
+
+  compileAdd(builder) {
+    const table = this.formatter.wrap(builder);
+    const columns = this.prefixArray('add column', this.getColumns(builder));
+    return this.pushQuery({
+      sql: `alter table ${table} ${columns.join(', ')}`,
+    });
+  },
+
+  // Adds the "create" query to the query sequence.
+  createQuery(columns, ifNot) {
+    const sql = `create table ${this.tableName()} (${columns.sql.join(', ')})`;
+    this.pushQuery({
+      // catch "name is already used by an existing object" for workaround for "if not exists"
+      sql: ifNot ? utils.wrapSqlWithCatch(sql, -955) : sql,
+      bindings: columns.bindings,
+    });
+    if (this.single.comment) this.comment(this.single.comment);
+  },
+
+  // Compiles the comment on the table.
+  comment(comment) {
+    this.pushQuery(`comment on table ${this.tableName()} is '${comment}'`);
+  },
+
+  addColumnsPrefix: 'add ',
+
+  alterColumnsPrefix: 'modify ',
+
+  dropColumn() {
+    const columns = helpers.normalizeArr.apply(null, arguments);
+    this.pushQuery(
+      `alter table ${this.tableName()} drop (${this.formatter.columnize(
+        columns
+      )})`
+    );
+  },
+
+  changeType() {
+    // alter table + table + ' modify ' + wrapped + '// type';
+  },
+
+  _indexCommand(type, tableName, columns) {
+    return this.formatter.wrap(
+      utils.generateCombinedName(this.client.logger, type, tableName, columns)
+    );
+  },
+
+  primary(columns, constraintName) {
+    constraintName = constraintName
+      ? this.formatter.wrap(constraintName)
+      : this.formatter.wrap(`${this.tableNameRaw}_pkey`);
+    this.pushQuery(
+      `alter table ${this.tableName()} add constraint ${constraintName} primary key (${this.formatter.columnize(
+        columns
+      )})`
+    );
+  },
+
+  dropPrimary(constraintName) {
+    constraintName = constraintName
+      ? this.formatter.wrap(constraintName)
+      : this.formatter.wrap(this.tableNameRaw + '_pkey');
+    this.pushQuery(
+      `alter table ${this.tableName()} drop constraint ${constraintName}`
+    );
+  },
+
+  index(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('index', this.tableNameRaw, columns);
+    this.pushQuery(
+      `create index ${indexName} on ${this.tableName()}` +
+        ' (' +
+        this.formatter.columnize(columns) +
+        ')'
+    );
+  },
+
+  dropIndex(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('index', this.tableNameRaw, columns);
+    this.pushQuery(`drop index ${indexName}`);
+  },
+
+  unique(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('unique', this.tableNameRaw, columns);
+    this.pushQuery(
+      `alter table ${this.tableName()} add constraint ${indexName}` +
+        ' unique (' +
+        this.formatter.columnize(columns) +
+        ')'
+    );
+  },
+
+  dropUnique(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('unique', this.tableNameRaw, columns);
+    this.pushQuery(
+      `alter table ${this.tableName()} drop constraint ${indexName}`
+    );
+  },
+
+  dropForeign(columns, indexName) {
+    indexName = indexName
+      ? this.formatter.wrap(indexName)
+      : this._indexCommand('foreign', this.tableNameRaw, columns);
+    this.pushQuery(
+      `alter table ${this.tableName()} drop constraint ${indexName}`
+    );
+  },
+});
+
+module.exports = TableCompiler_Oracle;

node_modules/knex/lib/dialects/oracle/schema/trigger.js

@@ -0,0 +1,126 @@
+const utils = require('../utils');
+
+const trigger = {
+  renameColumnTrigger: function(logger, tableName, columnName, to) {
+    const triggerName = utils.generateCombinedName(
+      logger,
+      'autoinc_trg',
+      tableName
+    );
+    const sequenceName = utils.generateCombinedName(logger, 'seq', tableName);
+    return (
+      `DECLARE ` +
+      `PK_NAME VARCHAR(200); ` +
+      `IS_AUTOINC NUMBER := 0; ` +
+      `BEGIN` +
+      `  EXECUTE IMMEDIATE ('ALTER TABLE "${tableName}" RENAME COLUMN "${columnName}" TO "${to}"');` +
+      `  SELECT COUNT(*) INTO IS_AUTOINC from "USER_TRIGGERS" where trigger_name = '${triggerName}';` +
+      `  IF (IS_AUTOINC > 0) THEN` +
+      `    SELECT cols.column_name INTO PK_NAME` +
+      `    FROM all_constraints cons, all_cons_columns cols` +
+      `    WHERE cons.constraint_type = 'P'` +
+      `    AND cons.constraint_name = cols.constraint_name` +
+      `    AND cons.owner = cols.owner` +
+      `    AND cols.table_name = '${tableName}';` +
+      `    IF ('${to}' = PK_NAME) THEN` +
+      `      EXECUTE IMMEDIATE ('DROP TRIGGER "${triggerName}"');` +
+      `      EXECUTE IMMEDIATE ('create or replace trigger "${triggerName}"` +
+      `      BEFORE INSERT on "${tableName}" for each row` +
+      `        declare` +
+      `        checking number := 1;` +
+      `        begin` +
+      `          if (:new."${to}" is null) then` +
+      `            while checking >= 1 loop` +
+      `              select "${sequenceName}".nextval into :new."${to}" from dual;` +
+      `              select count("${to}") into checking from "${tableName}"` +
+      `              where "${to}" = :new."${to}";` +
+      `            end loop;` +
+      `          end if;` +
+      `        end;');` +
+      `    end if;` +
+      `  end if;` +
+      `END;`
+    );
+  },
+
+  createAutoIncrementTrigger: function(logger, tableName) {
+    const triggerName = utils.generateCombinedName(
+      logger,
+      'autoinc_trg',
+      tableName
+    );
+    const sequenceName = utils.generateCombinedName(logger, 'seq', tableName);
+    return (
+      `DECLARE ` +
+      `PK_NAME VARCHAR(200); ` +
+      `BEGIN` +
+      `  EXECUTE IMMEDIATE ('CREATE SEQUENCE "${sequenceName}"');` +
+      `  SELECT cols.column_name INTO PK_NAME` +
+      `  FROM all_constraints cons, all_cons_columns cols` +
+      `  WHERE cons.constraint_type = 'P'` +
+      `  AND cons.constraint_name = cols.constraint_name` +
+      `  AND cons.owner = cols.owner` +
+      `  AND cols.table_name = '${tableName}';` +
+      `  execute immediate ('create or replace trigger "${triggerName}"` +
+      `  BEFORE INSERT on "${tableName}"` +
+      `  for each row` +
+      `  declare` +
+      `  checking number := 1;` +
+      `  begin` +
+      `    if (:new."' || PK_NAME || '" is null) then` +
+      `      while checking >= 1 loop` +
+      `        select "${sequenceName}".nextval into :new."' || PK_NAME || '" from dual;` +
+      `        select count("' || PK_NAME || '") into checking from "${tableName}"` +
+      `        where "' || PK_NAME || '" = :new."' || PK_NAME || '";` +
+      `      end loop;` +
+      `    end if;` +
+      `  end;'); ` +
+      `END;`
+    );
+  },
+
+  renameTableAndAutoIncrementTrigger: function(logger, tableName, to) {
+    const triggerName = utils.generateCombinedName(
+      logger,
+      'autoinc_trg',
+      tableName
+    );
+    const sequenceName = utils.generateCombinedName(logger, 'seq', tableName);
+    const toTriggerName = utils.generateCombinedName(logger, 'autoinc_trg', to);
+    const toSequenceName = utils.generateCombinedName(logger, 'seq', to);
+    return (
+      `DECLARE ` +
+      `PK_NAME VARCHAR(200); ` +
+      `IS_AUTOINC NUMBER := 0; ` +
+      `BEGIN` +
+      `  EXECUTE IMMEDIATE ('RENAME "${tableName}" TO "${to}"');` +
+      `  SELECT COUNT(*) INTO IS_AUTOINC from "USER_TRIGGERS" where trigger_name = '${triggerName}';` +
+      `  IF (IS_AUTOINC > 0) THEN` +
+      `    EXECUTE IMMEDIATE ('DROP TRIGGER "${triggerName}"');` +
+      `    EXECUTE IMMEDIATE ('RENAME "${sequenceName}" TO "${toSequenceName}"');` +
+      `    SELECT cols.column_name INTO PK_NAME` +
+      `    FROM all_constraints cons, all_cons_columns cols` +
+      `    WHERE cons.constraint_type = 'P'` +
+      `    AND cons.constraint_name = cols.constraint_name` +
+      `    AND cons.owner = cols.owner` +
+      `    AND cols.table_name = '${to}';` +
+      `    EXECUTE IMMEDIATE ('create or replace trigger "${toTriggerName}"` +
+      `    BEFORE INSERT on "${to}" for each row` +
+      `      declare` +
+      `      checking number := 1;` +
+      `      begin` +
+      `        if (:new."' || PK_NAME || '" is null) then` +
+      `          while checking >= 1 loop` +
+      `            select "${toSequenceName}".nextval into :new."' || PK_NAME || '" from dual;` +
+      `            select count("' || PK_NAME || '") into checking from "${to}"` +
+      `            where "' || PK_NAME || '" = :new."' || PK_NAME || '";` +
+      `          end loop;` +
+      `        end if;` +
+      `      end;');` +
+      `  end if;` +
+      `END;`
+    );
+  },
+};
+
+module.exports = trigger;

node_modules/knex/lib/dialects/oracle/transaction.js

@@ -0,0 +1,77 @@
+const Bluebird = require('bluebird');
+const Transaction = require('../../transaction');
+const { isUndefined } = require('lodash');
+const debugTx = require('debug')('knex:tx');
+
+module.exports = class Oracle_Transaction extends Transaction {
+  // disable autocommit to allow correct behavior (default is true)
+  begin() {
+    return Bluebird.resolve();
+  }
+
+  commit(conn, value) {
+    this._completed = true;
+    return conn
+      .commitAsync()
+      .then(() => value)
+      .then(this._resolver, this._rejecter);
+  }
+
+  release(conn, value) {
+    return this._resolver(value);
+  }
+
+  rollback(conn, err) {
+    this._completed = true;
+    debugTx('%s: rolling back', this.txid);
+    return conn
+      .rollbackAsync()
+      .throw(err)
+      .catch((error) => {
+        if (isUndefined(error)) {
+          if (this.doNotRejectOnRollback) {
+            this._resolver();
+            return;
+          }
+          error = new Error(`Transaction rejected with non-error: ${error}`);
+        }
+
+        return this._rejecter(error);
+      });
+  }
+
+  acquireConnection(config, cb) {
+    const configConnection = config && config.connection;
+    return new Bluebird((resolve, reject) => {
+      try {
+        resolve(configConnection || this.client.acquireConnection());
+      } catch (e) {
+        reject(e);
+      }
+    })
+      .then((connection) => {
+        connection.__knexTxId = this.txid;
+
+        return connection;
+      })
+      .then((connection) => {
+        if (!this.outerTx) {
+          connection.setAutoCommit(false);
+        }
+        return connection;
+      })
+      .then(async (connection) => {
+        try {
+          return await cb(connection);
+        } finally {
+          debugTx('%s: releasing connection', this.txid);
+          connection.setAutoCommit(true);
+          if (!configConnection) {
+            this.client.releaseConnection(connection);
+          } else {
+            debugTx('%s: not releasing external connection', this.txid);
+          }
+        }
+      });
+  }
+};

node_modules/knex/lib/dialects/oracle/utils.js

@@ -0,0 +1,86 @@
+function generateCombinedName(logger, postfix, name, subNames) {
+  const crypto = require('crypto');
+  const limit = 30;
+  if (!Array.isArray(subNames)) subNames = subNames ? [subNames] : [];
+  const table = name.replace(/\.|-/g, '_');
+  const subNamesPart = subNames.join('_');
+  let result = `${table}_${
+    subNamesPart.length ? subNamesPart + '_' : ''
+  }${postfix}`.toLowerCase();
+  if (result.length > limit) {
+    logger.warn(
+      `Automatically generated name "${result}" exceeds ${limit} character ` +
+        `limit for Oracle. Using base64 encoded sha1 of that name instead.`
+    );
+    // generates the sha1 of the name and encode it with base64
+    result = crypto
+      .createHash('sha1')
+      .update(result)
+      .digest('base64')
+      .replace('=', '');
+  }
+  return result;
+}
+
+function wrapSqlWithCatch(sql, errorNumberToCatch) {
+  return (
+    `begin execute immediate '${sql.replace(/'/g, "''")}'; ` +
+    `exception when others then if sqlcode != ${errorNumberToCatch} then raise; ` +
+    `end if; ` +
+    `end;`
+  );
+}
+
+function ReturningHelper(columnName) {
+  this.columnName = columnName;
+}
+
+ReturningHelper.prototype.toString = function() {
+  return `[object ReturningHelper:${this.columnName}]`;
+};
+
+// If the error is any of these, we'll assume we need to
+// mark the connection as failed
+function isConnectionError(err) {
+  return [
+    'ORA-03114', // not connected to ORACLE
+    'ORA-03113', // end-of-file on communication channel
+    'ORA-03135', // connection lost contact
+    'ORA-12514', // listener does not currently know of service requested in connect descriptor
+    'ORA-00022', // invalid session ID; access denied
+    'ORA-00028', // your session has been killed
+    'ORA-00031', // your session has been marked for kill
+    'ORA-00045', // your session has been terminated with no replay
+    'ORA-00378', // buffer pools cannot be created as specified
+    'ORA-00602', // internal programming exception
+    'ORA-00603', // ORACLE server session terminated by fatal error
+    'ORA-00609', // could not attach to incoming connection
+    'ORA-01012', // not logged on
+    'ORA-01041', // internal error. hostdef extension doesn't exist
+    'ORA-01043', // user side memory corruption
+    'ORA-01089', // immediate shutdown or close in progress
+    'ORA-01092', // ORACLE instance terminated. Disconnection forced
+    'ORA-02396', // exceeded maximum idle time, please connect again
+    'ORA-03122', // attempt to close ORACLE-side window on user side
+    'ORA-12153', // TNS'not connected
+    'ORA-12537', // TNS'connection closed
+    'ORA-12547', // TNS'lost contact
+    'ORA-12570', // TNS'packet reader failure
+    'ORA-12583', // TNS'no reader
+    'ORA-27146', // post/wait initialization failed
+    'ORA-28511', // lost RPC connection
+    'ORA-56600', // an illegal OCI function call was issued
+    'NJS-040',
+    'NJS-024',
+    'NJS-003',
+  ].some(function(prefix) {
+    return err.message.indexOf(prefix) === 0;
+  });
+}
+
+module.exports = {
+  generateCombinedName,
+  isConnectionError,
+  wrapSqlWithCatch,
+  ReturningHelper,
+};

node_modules/knex/lib/dialects/oracledb/index.js

@@ -0,0 +1,454 @@
+// Oracledb Client
+// -------
+const _ = require('lodash');
+const inherits = require('inherits');
+const QueryCompiler = require('./query/compiler');
+const ColumnCompiler = require('./schema/columncompiler');
+const { BlobHelper, ReturningHelper, isConnectionError } = require('./utils');
+const Bluebird = require('bluebird');
+const stream = require('stream');
+const { promisify } = require('util');
+const Transaction = require('./transaction');
+const Client_Oracle = require('../oracle');
+const Oracle_Formatter = require('../oracle/formatter');
+
+function Client_Oracledb() {
+  Client_Oracle.apply(this, arguments);
+  // Node.js only have 4 background threads by default, oracledb needs one by connection
+  if (this.driver) {
+    process.env.UV_THREADPOOL_SIZE = process.env.UV_THREADPOOL_SIZE || 1;
+    process.env.UV_THREADPOOL_SIZE =
+      parseInt(process.env.UV_THREADPOOL_SIZE) + this.driver.poolMax;
+  }
+}
+inherits(Client_Oracledb, Client_Oracle);
+
+Client_Oracledb.prototype.driverName = 'oracledb';
+
+Client_Oracledb.prototype._driver = function() {
+  const client = this;
+  const oracledb = require('oracledb');
+  client.fetchAsString = [];
+  if (this.config.fetchAsString && _.isArray(this.config.fetchAsString)) {
+    this.config.fetchAsString.forEach(function(type) {
+      if (!_.isString(type)) return;
+      type = type.toUpperCase();
+      if (oracledb[type]) {
+        if (type !== 'NUMBER' && type !== 'DATE' && type !== 'CLOB') {
+          this.logger.warn(
+            'Only "date", "number" and "clob" are supported for fetchAsString'
+          );
+        }
+        client.fetchAsString.push(oracledb[type]);
+      }
+    });
+  }
+  return oracledb;
+};
+
+Client_Oracledb.prototype.queryCompiler = function() {
+  return new QueryCompiler(this, ...arguments);
+};
+Client_Oracledb.prototype.columnCompiler = function() {
+  return new ColumnCompiler(this, ...arguments);
+};
+Client_Oracledb.prototype.formatter = function() {
+  return new Oracledb_Formatter(this, ...arguments);
+};
+Client_Oracledb.prototype.transaction = function() {
+  return new Transaction(this, ...arguments);
+};
+
+Client_Oracledb.prototype.prepBindings = function(bindings) {
+  return _.map(bindings, (value) => {
+    if (value instanceof BlobHelper && this.driver) {
+      return { type: this.driver.BLOB, dir: this.driver.BIND_OUT };
+      // Returning helper always use ROWID as string
+    } else if (value instanceof ReturningHelper && this.driver) {
+      return { type: this.driver.STRING, dir: this.driver.BIND_OUT };
+    } else if (typeof value === 'boolean') {
+      return value ? 1 : 0;
+    }
+    return value;
+  });
+};
+
+// Get a raw connection, called by the `pool` whenever a new
+// connection needs to be added to the pool.
+Client_Oracledb.prototype.acquireRawConnection = function() {
+  const client = this;
+  const asyncConnection = new Bluebird(function(resolver, rejecter) {
+    // If external authentication don't have to worry about username/password and
+    // if not need to set the username and password
+    const oracleDbConfig = client.connectionSettings.externalAuth
+      ? { externalAuth: client.connectionSettings.externalAuth }
+      : {
+          user: client.connectionSettings.user,
+          password: client.connectionSettings.password,
+        };
+
+    // In the case of external authentication connection string will be given
+    oracleDbConfig.connectString =
+      client.connectionSettings.connectString ||
+      client.connectionSettings.host + '/' + client.connectionSettings.database;
+
+    if (client.connectionSettings.prefetchRowCount) {
+      oracleDbConfig.prefetchRows = client.connectionSettings.prefetchRowCount;
+    }
+
+    if (!_.isUndefined(client.connectionSettings.stmtCacheSize)) {
+      oracleDbConfig.stmtCacheSize = client.connectionSettings.stmtCacheSize;
+    }
+
+    client.driver.fetchAsString = client.fetchAsString;
+
+    client.driver.getConnection(oracleDbConfig, function(err, connection) {
+      if (err) {
+        return rejecter(err);
+      }
+      connection.commitAsync = function() {
+        return new Bluebird((commitResolve, commitReject) => {
+          if (connection.isTransaction) {
+            return commitResolve();
+          }
+          this.commit(function(err) {
+            if (err) {
+              return commitReject(err);
+            }
+            commitResolve();
+          });
+        });
+      };
+      connection.rollbackAsync = function() {
+        return new Bluebird((rollbackResolve, rollbackReject) => {
+          this.rollback(function(err) {
+            if (err) {
+              return rollbackReject(err);
+            }
+            rollbackResolve();
+          });
+        });
+      };
+      const fetchAsync = promisify(function(sql, bindParams, options, cb) {
+        options = options || {};
+        options.outFormat =
+          client.driver.OUT_FORMAT_OBJECT || client.driver.OBJECT;
+        if (!options.outFormat) {
+          throw new Error('not found oracledb.outFormat constants');
+        }
+        if (options.resultSet) {
+          connection.execute(sql, bindParams || [], options, function(
+            err,
+            result
+          ) {
+            if (err) {
+              if (isConnectionError(err)) {
+                connection.close().catch(function(err) {});
+                connection.__knex__disposed = err;
+              }
+              return cb(err);
+            }
+            const fetchResult = { rows: [], resultSet: result.resultSet };
+            const numRows = 100;
+            const fetchRowsFromRS = function(connection, resultSet, numRows) {
+              resultSet.getRows(numRows, function(err, rows) {
+                if (err) {
+                  if (isConnectionError(err)) {
+                    connection.close().catch(function(err) {});
+                    connection.__knex__disposed = err;
+                  }
+                  resultSet.close(function() {
+                    return cb(err);
+                  });
+                } else if (rows.length === 0) {
+                  return cb(null, fetchResult);
+                } else if (rows.length > 0) {
+                  if (rows.length === numRows) {
+                    fetchResult.rows = fetchResult.rows.concat(rows);
+                    fetchRowsFromRS(connection, resultSet, numRows);
+                  } else {
+                    fetchResult.rows = fetchResult.rows.concat(rows);
+                    return cb(null, fetchResult);
+                  }
+                }
+              });
+            };
+            fetchRowsFromRS(connection, result.resultSet, numRows);
+          });
+        } else {
+          connection.execute(sql, bindParams || [], options, function(
+            err,
+            result
+          ) {
+            if (err) {
+              // dispose the connection on connection error
+              if (isConnectionError(err)) {
+                connection.close().catch(function(err) {});
+                connection.__knex__disposed = err;
+              }
+              return cb(err);
+            }
+
+            return cb(null, result);
+          });
+        }
+      });
+      connection.executeAsync = function(sql, bindParams, options) {
+        // Read all lob
+        return fetchAsync(sql, bindParams, options).then(async (results) => {
+          const closeResultSet = () => {
+            return results.resultSet
+              ? promisify(results.resultSet.close).call(results.resultSet)
+              : Promise.resolve();
+          };
+
+          // Collect LOBs to read
+          const lobs = [];
+          if (results.rows) {
+            if (Array.isArray(results.rows)) {
+              for (let i = 0; i < results.rows.length; i++) {
+                // Iterate through the rows
+                const row = results.rows[i];
+                for (const column in row) {
+                  if (row[column] instanceof stream.Readable) {
+                    lobs.push({ index: i, key: column, stream: row[column] });
+                  }
+                }
+              }
+            }
+          }
+
+          try {
+            for (const lob of lobs) {
+              // todo should be fetchAsString/fetchAsBuffer polyfill only
+              results.rows[lob.index][lob.key] = await lobProcessing(
+                lob.stream
+              );
+            }
+          } catch (e) {
+            await closeResultSet().catch(() => {});
+
+            throw e;
+          }
+
+          await closeResultSet();
+
+          return results;
+        });
+      };
+      resolver(connection);
+    });
+  });
+  return asyncConnection;
+};
+
+// Used to explicitly close a connection, called internally by the pool
+// when a connection times out or the pool is shutdown.
+Client_Oracledb.prototype.destroyRawConnection = function(connection) {
+  return connection.release();
+};
+
+// Runs the query on the specified connection, providing the bindings
+// and any other necessary prep work.
+Client_Oracledb.prototype._query = function(connection, obj) {
+  if (!obj.sql) throw new Error('The query is empty');
+
+  const options = { autoCommit: false };
+  if (obj.method === 'select') {
+    options.resultSet = true;
+  }
+  return Bluebird.resolve(
+    connection.executeAsync(obj.sql, obj.bindings, options)
+  ).then(async function(response) {
+    // Flatten outBinds
+    let outBinds = _.flatten(response.outBinds);
+    obj.response = response.rows || [];
+    obj.rowsAffected = response.rows
+      ? response.rows.rowsAffected
+      : response.rowsAffected;
+
+    //added for outBind parameter
+    if (obj.method === 'raw' && outBinds.length > 0) {
+      return {
+        response: outBinds,
+      };
+    }
+
+    if (obj.method === 'update') {
+      const modifiedRowsCount = obj.rowsAffected.length || obj.rowsAffected;
+      const updatedObjOutBinding = [];
+      const updatedOutBinds = [];
+      const updateOutBinds = (i) =>
+        function(value, index) {
+          const OutBindsOffset = index * modifiedRowsCount;
+          updatedOutBinds.push(outBinds[i + OutBindsOffset]);
+        };
+
+      for (let i = 0; i < modifiedRowsCount; i++) {
+        updatedObjOutBinding.push(obj.outBinding[0]);
+        _.each(obj.outBinding[0], updateOutBinds(i));
+      }
+      outBinds = updatedOutBinds;
+      obj.outBinding = updatedObjOutBinding;
+    }
+
+    if (!obj.returning && outBinds.length === 0) {
+      await connection.commitAsync();
+      return obj;
+    }
+    const rowIds = [];
+    let offset = 0;
+
+    for (let line = 0; line < obj.outBinding.length; line++) {
+      const ret = obj.outBinding[line];
+
+      offset =
+        offset +
+        (obj.outBinding[line - 1] ? obj.outBinding[line - 1].length : 0);
+
+      for (let index = 0; index < ret.length; index++) {
+        const out = ret[index];
+
+        await new Promise(function(bindResolver, bindRejecter) {
+          if (out instanceof BlobHelper) {
+            const blob = outBinds[index + offset];
+            if (out.returning) {
+              obj.response[line] = obj.response[line] || {};
+              obj.response[line][out.columnName] = out.value;
+            }
+            blob.on('error', function(err) {
+              bindRejecter(err);
+            });
+            blob.on('finish', function() {
+              bindResolver();
+            });
+            blob.write(out.value);
+            blob.end();
+          } else if (obj.outBinding[line][index] === 'ROWID') {
+            rowIds.push(outBinds[index + offset]);
+            bindResolver();
+          } else {
+            obj.response[line] = obj.response[line] || {};
+            obj.response[line][out] = outBinds[index + offset];
+            bindResolver();
+          }
+        });
+      }
+    }
+    return connection.commitAsync().then(function() {
+      if (obj.returningSql) {
+        return connection
+          .executeAsync(obj.returningSql(), rowIds, { resultSet: true })
+          .then(function(response) {
+            obj.response = response.rows;
+            return obj;
+          });
+      }
+      return obj;
+    });
+  });
+};
+
+/**
+ * @param stream
+ * @param {'string' | 'buffer'} type
+ */
+function readStream(stream, type) {
+  return new Promise((resolve, reject) => {
+    let data = type === 'string' ? '' : Buffer.alloc(0);
+
+    stream.on('error', function(err) {
+      reject(err);
+    });
+    stream.on('data', function(chunk) {
+      if (type === 'string') {
+        data += chunk;
+      } else {
+        data = Buffer.concat([data, chunk]);
+      }
+    });
+    stream.on('end', function() {
+      resolve(data);
+    });
+  });
+}
+
+// Process the response as returned from the query.
+Client_Oracledb.prototype.processResponse = function(obj, runner) {
+  let response = obj.response;
+  const method = obj.method;
+  if (obj.output) {
+    return obj.output.call(runner, response);
+  }
+  switch (method) {
+    case 'select':
+    case 'pluck':
+    case 'first':
+      if (obj.method === 'pluck') {
+        response = _.map(response, obj.pluck);
+      }
+      return obj.method === 'first' ? response[0] : response;
+    case 'insert':
+    case 'del':
+    case 'update':
+    case 'counter':
+      if (obj.returning && !_.isEmpty(obj.returning)) {
+        if (obj.returning.length === 1 && obj.returning[0] !== '*') {
+          return _.flatten(_.map(response, _.values));
+        }
+        return response;
+      } else if (!_.isUndefined(obj.rowsAffected)) {
+        return obj.rowsAffected;
+      } else {
+        return 1;
+      }
+    default:
+      return response;
+  }
+};
+
+const lobProcessing = function(stream) {
+  const oracledb = require('oracledb');
+
+  /**
+   * @type 'string' | 'buffer'
+   */
+  let type;
+
+  if (stream.type) {
+    // v1.2-v4
+    if (stream.type === oracledb.BLOB) {
+      type = 'buffer';
+    } else if (stream.type === oracledb.CLOB) {
+      type = 'string';
+    }
+  } else if (stream.iLob) {
+    // v1
+    if (stream.iLob.type === oracledb.CLOB) {
+      type = 'string';
+    } else if (stream.iLob.type === oracledb.BLOB) {
+      type = 'buffer';
+    }
+  } else {
+    throw new Error('Unrecognized oracledb lob stream type');
+  }
+  if (type === 'string') {
+    stream.setEncoding('utf-8');
+  }
+  return readStream(stream, type);
+};
+
+class Oracledb_Formatter extends Oracle_Formatter {
+  // Checks whether a value is a function... if it is, we compile it
+  // otherwise we check whether it's a raw
+  parameter(value) {
+    if (typeof value === 'function') {
+      return this.outputQuery(this.compileCallback(value), true);
+    } else if (value instanceof BlobHelper) {
+      return 'EMPTY_BLOB()';
+    }
+    return this.unwrapRaw(value, true) || '?';
+  }
+}
+
+module.exports = Client_Oracledb;

node_modules/knex/lib/dialects/oracledb/query/compiler.js

@@ -0,0 +1,360 @@
+const _ = require('lodash');
+const inherits = require('inherits');
+const Oracle_Compiler = require('../../oracle/query/compiler');
+const ReturningHelper = require('../utils').ReturningHelper;
+const BlobHelper = require('../utils').BlobHelper;
+
+function Oracledb_Compiler(client, builder) {
+  Oracle_Compiler.call(this, client, builder);
+}
+inherits(Oracledb_Compiler, Oracle_Compiler);
+
+_.assign(Oracledb_Compiler.prototype, {
+  // Compiles an "insert" query, allowing for multiple
+  // inserts using a single query statement.
+  insert: function() {
+    const self = this;
+    const outBindPrep = this._prepOutbindings(
+      this.single.insert,
+      this.single.returning
+    );
+    const outBinding = outBindPrep.outBinding;
+    const returning = outBindPrep.returning;
+    const insertValues = outBindPrep.values;
+
+    if (
+      Array.isArray(insertValues) &&
+      insertValues.length === 1 &&
+      _.isEmpty(insertValues[0])
+    ) {
+      return this._addReturningToSqlAndConvert(
+        'insert into ' +
+          this.tableName +
+          ' (' +
+          this.formatter.wrap(this.single.returning) +
+          ') values (default)',
+        outBinding[0],
+        this.tableName,
+        returning
+      );
+    }
+
+    if (
+      _.isEmpty(this.single.insert) &&
+      typeof this.single.insert !== 'function'
+    ) {
+      return '';
+    }
+
+    const insertData = this._prepInsert(insertValues);
+
+    const sql = {};
+
+    if (_.isString(insertData)) {
+      return this._addReturningToSqlAndConvert(
+        'insert into ' + this.tableName + ' ' + insertData,
+        outBinding[0],
+        this.tableName,
+        returning
+      );
+    }
+
+    if (insertData.values.length === 1) {
+      return this._addReturningToSqlAndConvert(
+        'insert into ' +
+          this.tableName +
+          ' (' +
+          this.formatter.columnize(insertData.columns) +
+          ') values (' +
+          this.formatter.parameterize(insertData.values[0]) +
+          ')',
+        outBinding[0],
+        this.tableName,
+        returning
+      );
+    }
+
+    const insertDefaultsOnly = insertData.columns.length === 0;
+    sql.returning = returning;
+    sql.sql =
+      'begin ' +
+      _.map(insertData.values, function(value, index) {
+        const parameterizedValues = !insertDefaultsOnly
+          ? self.formatter.parameterize(value, self.client.valueForUndefined)
+          : '';
+        let subSql = 'insert into ' + self.tableName;
+
+        if (insertDefaultsOnly) {
+          // No columns given so only the default value
+          subSql +=
+            ' (' +
+            self.formatter.wrap(self.single.returning) +
+            ') values (default)';
+        } else {
+          subSql +=
+            ' (' +
+            self.formatter.columnize(insertData.columns) +
+            ') values (' +
+            parameterizedValues +
+            ')';
+        }
+
+        let returningClause = '';
+        let intoClause = '';
+        // ToDo review if this code is still needed or could be dropped
+        // eslint-disable-next-line no-unused-vars
+        let usingClause = '';
+        let outClause = '';
+
+        _.each(value, function(val) {
+          if (!(val instanceof BlobHelper)) {
+            usingClause += ' ?,';
+          }
+        });
+        usingClause = usingClause.slice(0, -1);
+
+        // Build returning and into clauses
+        _.each(outBinding[index], function(ret) {
+          const columnName = ret.columnName || ret;
+          returningClause += self.formatter.wrap(columnName) + ',';
+          intoClause += ' ?,';
+          outClause += ' out ?,';
+
+          // Add Helpers to bindings
+          if (ret instanceof BlobHelper) {
+            return self.formatter.bindings.push(ret);
+          }
+          self.formatter.bindings.push(new ReturningHelper(columnName));
+        });
+
+        // Strip last comma
+        returningClause = returningClause.slice(0, -1);
+        intoClause = intoClause.slice(0, -1);
+        outClause = outClause.slice(0, -1);
+
+        if (returningClause && intoClause) {
+          subSql += ' returning ' + returningClause + ' into' + intoClause;
+        }
+
+        // Pre bind position because subSql is an execute immediate parameter
+        // later position binding will only convert the ? params
+        subSql = self.formatter.client.positionBindings(subSql);
+        const parameterizedValuesWithoutDefaultAndBlob = parameterizedValues
+          .replace('DEFAULT, ', '')
+          .replace(', DEFAULT', '')
+          .replace('EMPTY_BLOB(), ', '')
+          .replace(', EMPTY_BLOB()', '');
+        return (
+          "execute immediate '" +
+          subSql.replace(/'/g, "''") +
+          (parameterizedValuesWithoutDefaultAndBlob || value
+            ? "' using "
+            : '') +
+          parameterizedValuesWithoutDefaultAndBlob +
+          (parameterizedValuesWithoutDefaultAndBlob && outClause ? ',' : '') +
+          outClause +
+          ';'
+        );
+      }).join(' ') +
+      'end;';
+
+    sql.outBinding = outBinding;
+    if (returning[0] === '*') {
+      // Generate select statement with special order by
+      // to keep the order because 'in (..)' may change the order
+      sql.returningSql = function() {
+        return (
+          'select * from ' +
+          self.tableName +
+          ' where ROWID in (' +
+          this.outBinding
+            .map(function(v, i) {
+              return ':' + (i + 1);
+            })
+            .join(', ') +
+          ')' +
+          ' order by case ROWID ' +
+          this.outBinding
+            .map(function(v, i) {
+              return 'when CHARTOROWID(:' + (i + 1) + ') then ' + i;
+            })
+            .join(' ') +
+          ' end'
+        );
+      };
+    }
+
+    return sql;
+  },
+
+  _addReturningToSqlAndConvert: function(
+    sql,
+    outBinding,
+    tableName,
+    returning
+  ) {
+    const self = this;
+    const res = {
+      sql: sql,
+    };
+
+    if (!outBinding) {
+      return res;
+    }
+    const returningValues = Array.isArray(outBinding)
+      ? outBinding
+      : [outBinding];
+    let returningClause = '';
+    let intoClause = '';
+    // Build returning and into clauses
+    _.each(returningValues, function(ret) {
+      const columnName = ret.columnName || ret;
+      returningClause += self.formatter.wrap(columnName) + ',';
+      intoClause += '?,';
+
+      // Add Helpers to bindings
+      if (ret instanceof BlobHelper) {
+        return self.formatter.bindings.push(ret);
+      }
+      self.formatter.bindings.push(new ReturningHelper(columnName));
+    });
+    res.sql = sql;
+
+    // Strip last comma
+    returningClause = returningClause.slice(0, -1);
+    intoClause = intoClause.slice(0, -1);
+    if (returningClause && intoClause) {
+      res.sql += ' returning ' + returningClause + ' into ' + intoClause;
+    }
+    res.outBinding = [outBinding];
+    if (returning[0] === '*') {
+      res.returningSql = function() {
+        return 'select * from ' + self.tableName + ' where ROWID = :1';
+      };
+    }
+    res.returning = returning;
+
+    return res;
+  },
+
+  _prepOutbindings: function(paramValues, paramReturning) {
+    const result = {};
+    let params = paramValues || [];
+    let returning = paramReturning || [];
+    if (!Array.isArray(params) && _.isPlainObject(paramValues)) {
+      params = [params];
+    }
+    // Always wrap returning argument in array
+    if (returning && !Array.isArray(returning)) {
+      returning = [returning];
+    }
+
+    const outBinding = [];
+    // Handle Buffer value as Blob
+    _.each(params, function(values, index) {
+      if (returning[0] === '*') {
+        outBinding[index] = ['ROWID'];
+      } else {
+        outBinding[index] = _.clone(returning);
+      }
+      _.each(values, function(value, key) {
+        if (value instanceof Buffer) {
+          values[key] = new BlobHelper(key, value);
+
+          // Delete blob duplicate in returning
+          const blobIndex = outBinding[index].indexOf(key);
+          if (blobIndex >= 0) {
+            outBinding[index].splice(blobIndex, 1);
+            values[key].returning = true;
+          }
+          outBinding[index].push(values[key]);
+        }
+        if (_.isUndefined(value)) {
+          delete params[index][key];
+        }
+      });
+    });
+    result.returning = returning;
+    result.outBinding = outBinding;
+    result.values = params;
+    return result;
+  },
+
+  update: function() {
+    const self = this;
+    const sql = {};
+    const outBindPrep = this._prepOutbindings(
+      this.single.update || this.single.counter,
+      this.single.returning
+    );
+    const outBinding = outBindPrep.outBinding;
+    const returning = outBindPrep.returning;
+
+    const updates = this._prepUpdate(this.single.update);
+    const where = this.where();
+
+    let returningClause = '';
+    let intoClause = '';
+
+    if (_.isEmpty(updates) && typeof this.single.update !== 'function') {
+      return '';
+    }
+
+    // Build returning and into clauses
+    _.each(outBinding, function(out) {
+      _.each(out, function(ret) {
+        const columnName = ret.columnName || ret;
+        returningClause += self.formatter.wrap(columnName) + ',';
+        intoClause += ' ?,';
+
+        // Add Helpers to bindings
+        if (ret instanceof BlobHelper) {
+          return self.formatter.bindings.push(ret);
+        }
+        self.formatter.bindings.push(new ReturningHelper(columnName));
+      });
+    });
+    // Strip last comma
+    returningClause = returningClause.slice(0, -1);
+    intoClause = intoClause.slice(0, -1);
+
+    sql.outBinding = outBinding;
+    sql.returning = returning;
+    sql.sql =
+      'update ' +
+      this.tableName +
+      ' set ' +
+      updates.join(', ') +
+      (where ? ' ' + where : '');
+    if (outBinding.length && !_.isEmpty(outBinding[0])) {
+      sql.sql += ' returning ' + returningClause + ' into' + intoClause;
+    }
+    if (returning[0] === '*') {
+      sql.returningSql = function() {
+        let sql = 'select * from ' + self.tableName;
+        const modifiedRowsCount = this.rowsAffected.length || this.rowsAffected;
+        let returningSqlIn = ' where ROWID in (';
+        let returningSqlOrderBy = ') order by case ROWID ';
+
+        // Needs special order by because in(...) change result order
+        for (let i = 0; i < modifiedRowsCount; i++) {
+          if (this.returning[0] === '*') {
+            returningSqlIn += ':' + (i + 1) + ', ';
+            returningSqlOrderBy +=
+              'when CHARTOROWID(:' + (i + 1) + ') then ' + i + ' ';
+          }
+        }
+        if (this.returning[0] === '*') {
+          this.returning = this.returning.slice(0, -1);
+          returningSqlIn = returningSqlIn.slice(0, -2);
+          returningSqlOrderBy = returningSqlOrderBy.slice(0, -1);
+        }
+        return (sql += returningSqlIn + returningSqlOrderBy + ' end');
+      };
+    }
+
+    return sql;
+  },
+});
+
+module.exports = Oracledb_Compiler;

node_modules/knex/lib/dialects/oracledb/schema/columncompiler.js

@@ -0,0 +1,36 @@
+const inherits = require('inherits');
+const ColumnCompiler_Oracle = require('../../oracle/schema/columncompiler');
+
+const { isObject } = require('lodash');
+
+function ColumnCompiler_Oracledb() {
+  ColumnCompiler_Oracle.apply(this, arguments);
+}
+
+inherits(ColumnCompiler_Oracledb, ColumnCompiler_Oracle);
+
+Object.assign(ColumnCompiler_Oracledb.prototype, {
+  time: 'timestamp with local time zone',
+
+  datetime: function(withoutTz) {
+    let useTz;
+    if (isObject(withoutTz)) {
+      ({ useTz } = withoutTz);
+    } else {
+      useTz = !withoutTz;
+    }
+    return useTz ? 'timestamp with local time zone' : 'timestamp';
+  },
+
+  timestamp: function(withoutTz) {
+    let useTz;
+    if (isObject(withoutTz)) {
+      ({ useTz } = withoutTz);
+    } else {
+      useTz = !withoutTz;
+    }
+    return useTz ? 'timestamp with local time zone' : 'timestamp';
+  },
+});
+
+module.exports = ColumnCompiler_Oracledb;

node_modules/knex/lib/dialects/oracledb/transaction.js

@@ -0,0 +1,87 @@
+const { isUndefined } = require('lodash');
+
+const Bluebird = require('bluebird');
+const Transaction = require('../../transaction');
+const debugTx = require('debug')('knex:tx');
+
+module.exports = class Oracle_Transaction extends Transaction {
+  // disable autocommit to allow correct behavior (default is true)
+  begin() {
+    return Bluebird.resolve();
+  }
+
+  commit(conn, value) {
+    this._completed = true;
+    return conn
+      .commitAsync()
+      .then(() => value)
+      .then(this._resolver, this._rejecter);
+  }
+
+  release(conn, value) {
+    return this._resolver(value);
+  }
+
+  rollback(conn, err) {
+    const self = this;
+    this._completed = true;
+    debugTx('%s: rolling back', this.txid);
+    return conn
+      .rollbackAsync()
+      .timeout(5000)
+      .catch(Bluebird.TimeoutError, function(e) {
+        self._rejecter(e);
+      })
+      .then(function() {
+        if (isUndefined(err)) {
+          if (self.doNotRejectOnRollback) {
+            self._resolver();
+            return;
+          }
+          err = new Error(`Transaction rejected with non-error: ${err}`);
+        }
+        self._rejecter(err);
+      });
+  }
+
+  savepoint(conn) {
+    return this.query(conn, `SAVEPOINT ${this.txid}`);
+  }
+
+  acquireConnection(config, cb) {
+    const configConnection = config && config.connection;
+    const t = this;
+    return new Bluebird((resolve, reject) => {
+      try {
+        this.client
+          .acquireConnection()
+          .then((cnx) => {
+            cnx.__knexTxId = this.txid;
+            cnx.isTransaction = true;
+            resolve(cnx);
+          })
+          .catch(reject);
+      } catch (e) {
+        reject(e);
+      }
+    }).then(async (connection) => {
+      try {
+        return await cb(connection);
+      } finally {
+        debugTx('%s: releasing connection', this.txid);
+        connection.isTransaction = false;
+        try {
+          await connection.commitAsync();
+        } catch (err) {
+          t._rejecter(err);
+        } finally {
+          if (!configConnection) {
+            await t.client.releaseConnection(connection);
+          } else {
+            debugTx('%s: not releasing external connection', t.txid);
+          }
+        }
+      }
+    });
+  }
+};

node_modules/knex/lib/dialects/oracledb/utils.js

@@ -0,0 +1,14 @@
+const Utils = require('../oracle/utils');
+
+function BlobHelper(columnName, value) {
+  this.columnName = columnName;
+  this.value = value;
+  this.returning = false;
+}
+
+BlobHelper.prototype.toString = function() {
+  return '[object BlobHelper:' + this.columnName + ']';
+};
+
+Utils.BlobHelper = BlobHelper;
+module.exports = Utils;

node_modules/knex/lib/dialects/postgres/index.js

@@ -0,0 +1,321 @@
+// PostgreSQL
+// -------
+const { map, extend, isString } = require('lodash');
+const { promisify } = require('util');
+const inherits = require('inherits');
+const Client = require('../../client');
+const Bluebird = require('bluebird');
+
+const QueryCompiler = require('./query/compiler');
+const ColumnCompiler = require('./schema/columncompiler');
+const TableCompiler = require('./schema/tablecompiler');
+const SchemaCompiler = require('./schema/compiler');
+const { makeEscape } = require('../../query/string');
+
+function Client_PG(config) {
+  Client.apply(this, arguments);
+  if (config.returning) {
+    this.defaultReturning = config.returning;
+  }
+
+  if (config.searchPath) {
+    this.searchPath = config.searchPath;
+  }
+}
+inherits(Client_PG, Client);
+
+Object.assign(Client_PG.prototype, {
+  queryCompiler() {
+    return new QueryCompiler(this, ...arguments);
+  },
+
+  columnCompiler() {
+    return new ColumnCompiler(this, ...arguments);
+  },
+
+  schemaCompiler() {
+    return new SchemaCompiler(this, ...arguments);
+  },
+
+  tableCompiler() {
+    return new TableCompiler(this, ...arguments);
+  },
+
+  dialect: 'postgresql',
+
+  driverName: 'pg',
+
+  _driver() {
+    return require('pg');
+  },
+
+  _escapeBinding: makeEscape({
+    escapeArray(val, esc) {
+      return esc(arrayString(val, esc));
+    },
+    escapeString(str) {
+      let hasBackslash = false;
+      let escaped = "'";
+      for (let i = 0; i < str.length; i++) {
+        const c = str[i];
+        if (c === "'") {
+          escaped += c + c;
+        } else if (c === '\\') {
+          escaped += c + c;
+          hasBackslash = true;
+        } else {
+          escaped += c;
+        }
+      }
+      escaped += "'";
+      if (hasBackslash === true) {
+        escaped = 'E' + escaped;
+      }
+      return escaped;
+    },
+    escapeObject(val, prepareValue, timezone, seen = []) {
+      if (val && typeof val.toPostgres === 'function') {
+        seen = seen || [];
+        if (seen.indexOf(val) !== -1) {
+          throw new Error(
+            `circular reference detected while preparing "${val}" for query`
+          );
+        }
+        seen.push(val);
+        return prepareValue(val.toPostgres(prepareValue), seen);
+      }
+      return JSON.stringify(val);
+    },
+  }),
+
+  wrapIdentifierImpl(value) {
+    if (value === '*') return value;
+
+    let arrayAccessor = '';
+    const arrayAccessorMatch = value.match(/(.*?)(\[[0-9]+\])/);
+
+    if (arrayAccessorMatch) {
+      value = arrayAccessorMatch[1];
+      arrayAccessor = arrayAccessorMatch[2];
+    }
+
+    return `"${value.replace(/"/g, '""')}"${arrayAccessor}`;
+  },
+
+  // Get a raw connection, called by the `pool` whenever a new
+  // connection needs to be added to the pool.
+  acquireRawConnection() {
+    const client = this;
+    return new Bluebird(function(resolver, rejecter) {
+      const connection = new client.driver.Client(client.connectionSettings);
+      connection.connect(function(err, connection) {
+        if (err) {
+          return rejecter(err);
+        }
+        connection.on('error', (err) => {
+          connection.__knex__disposed = err;
+        });
+        connection.on('end', (err) => {
+          connection.__knex__disposed = err || 'Connection ended unexpectedly';
+        });
+        if (!client.version) {
+          return client.checkVersion(connection).then(function(version) {
+            client.version = version;
+            resolver(connection);
+          });
+        }
+        resolver(connection);
+      });
+    }).then(function setSearchPath(connection) {
+      client.setSchemaSearchPath(connection);
+      return connection;
+    });
+  },
+
+  // Used to explicitly close a connection, called internally by the pool
+  // when a connection times out or the pool is shutdown.
+  async destroyRawConnection(connection) {
+    const end = promisify((cb) => connection.end(cb));
+    return end();
+  },
+
+  // In PostgreSQL, we need to do a version check to do some feature
+  // checking on the database.
+  checkVersion(connection) {
+    return new Bluebird(function(resolver, rejecter) {
+      connection.query('select version();', function(err, resp) {
+        if (err) return rejecter(err);
+        resolver(/^PostgreSQL (.*?)( |$)/.exec(resp.rows[0].version)[1]);
+      });
+    });
+  },
+
+  // Position the bindings for the query. The escape sequence for question mark
+  // is \? (e.g. knex.raw("\\?") since javascript requires '\' to be escaped too...)
+  positionBindings(sql) {
+    let questionCount = 0;
+    return sql.replace(/(\\*)(\?)/g, function(match, escapes) {
+      if (escapes.length % 2) {
+        return '?';
+      } else {
+        questionCount++;
+        return `$${questionCount}`;
+      }
+    });
+  },
+
+  setSchemaSearchPath(connection, searchPath) {
+    let path = searchPath || this.searchPath;
+
+    if (!path) return Bluebird.resolve(true);
+
+    if (!Array.isArray(path) && !isString(path)) {
+      throw new TypeError(
+        `knex: Expected searchPath to be Array/String, got: ${typeof path}`
+      );
+    }
+
+    if (isString(path)) {
+      if (path.includes(',')) {
+        const parts = path.split(',');
+        const arraySyntax = `[${parts
+          .map((searchPath) => `'${searchPath}'`)
+          .join(', ')}]`;
+        this.logger.warn(
+          `Detected comma in searchPath "${path}".` +
+            `If you are trying to specify multiple schemas, use Array syntax: ${arraySyntax}`
+        );
+      }
+      path = [path];
+    }
+
+    path = path.map((schemaName) => `"${schemaName}"`).join(',');
+
+    return new Bluebird(function(resolver, rejecter) {
+      connection.query(`set search_path to ${path}`, function(err) {
+        if (err) return rejecter(err);
+        resolver(true);
+      });
+    });
+  },
+
+  _stream(connection, obj, stream, options) {
+    const PGQueryStream = process.browser
+      ? undefined
+      : require('pg-query-stream');
+    const sql = obj.sql;
+
+    return new Bluebird(function(resolver, rejecter) {
+      const queryStream = connection.query(
+        new PGQueryStream(sql, obj.bindings, options)
+      );
+
+      queryStream.on('error', function(error) {
+        rejecter(error);
+        stream.emit('error', error);
+      });
+
+      // 'end' IS propagated by .pipe, by default
+      stream.on('end', resolver);
+      queryStream.pipe(stream);
+    });
+  },
+
+  // Runs the query on the specified connection, providing the bindings
+  // and any other necessary prep work.
+  _query(connection, obj) {
+    let queryConfig = {
+      text: obj.sql,
+      values: obj.bindings || [],
+    };
+
+    if (obj.options) {
+      queryConfig = extend(queryConfig, obj.options);
+    }
+
+    return new Bluebird(function(resolver, rejecter) {
+      connection.query(queryConfig, function(err, response) {
+        if (err) return rejecter(err);
+        obj.response = response;
+        resolver(obj);
+      });
+    });
+  },
+
+  // Ensures the response is returned in the same format as other clients.
+  processResponse(obj, runner) {
+    const resp = obj.response;
+    if (obj.output) return obj.output.call(runner, resp);
+    if (obj.method === 'raw') return resp;
+    const { returning } = obj;
+    if (resp.command === 'SELECT') {
+      if (obj.method === 'first') return resp.rows[0];
+      if (obj.method === 'pluck') return map(resp.rows, obj.pluck);
+      return resp.rows;
+    }
+    if (returning) {
+      const returns = [];
+      for (let i = 0, l = resp.rows.length; i < l; i++) {
+        const row = resp.rows[i];
+        if (returning === '*' || Array.isArray(returning)) {
+          returns[i] = row;
+        } else {
+          // Pluck the only column in the row.
+          returns[i] = row[Object.keys(row)[0]];
+        }
+      }
+      return returns;
+    }
+    if (resp.command === 'UPDATE' || resp.command === 'DELETE') {
+      return resp.rowCount;
+    }
+    return resp;
+  },
+
+  canCancelQuery: true,
+  cancelQuery(connectionToKill) {
+    const acquiringConn = this.acquireConnection();
+
+    // Error out if we can't acquire connection in time.
+    // Purposely not putting timeout on `pg_cancel_backend` execution because erroring
+    // early there would release the `connectionToKill` back to the pool with
+    // a `KILL QUERY` command yet to finish.
+    return acquiringConn.then((conn) => {
+      return this._wrappedCancelQueryCall(conn, connectionToKill).finally(
+        () => {
+          // NOT returning this promise because we want to release the connection
+          // in a non-blocking fashion
+          this.releaseConnection(conn);
+        }
+      );
+    });
+  },
+  _wrappedCancelQueryCall(conn, connectionToKill) {
+    return this.query(conn, {
+      method: 'raw',
+      sql: 'SELECT pg_cancel_backend(?);',
+      bindings: [connectionToKill.processID],
+      options: {},
+    });
+  },
+});
+
+function arrayString(arr, esc) {
+  let result = '{';
+  for (let i = 0; i < arr.length; i++) {
+    if (i > 0) result += ',';
+    const val = arr[i];
+    if (val === null || typeof val === 'undefined') {
+      result += 'NULL';
+    } else if (Array.isArray(val)) {
+      result += arrayString(val, esc);
+    } else if (typeof val === 'number') {
+      result += val;
+    } else {
+      result += JSON.stringify(typeof val === 'string' ? val : esc(val));
+    }
+  }
+  return result + '}';
+}
+
+module.exports = Client_PG;

node_modules/knex/lib/dialects/postgres/query/compiler.js

@@ -0,0 +1,166 @@
+// PostgreSQL Query Builder & Compiler
+// ------
+const inherits = require('inherits');
+
+const QueryCompiler = require('../../../query/compiler');
+
+const { reduce, identity } = require('lodash');
+
+function QueryCompiler_PG(client, builder) {
+  QueryCompiler.call(this, client, builder);
+}
+
+inherits(QueryCompiler_PG, QueryCompiler);
+
+Object.assign(QueryCompiler_PG.prototype, {
+  // Compiles a truncate query.
+  truncate() {
+    return `truncate ${this.tableName} restart identity`;
+  },
+
+  // is used if the an array with multiple empty values supplied
+  _defaultInsertValue: 'default',
+
+  // Compiles an `insert` query, allowing for multiple
+  // inserts using a single query statement.
+  insert() {
+    const sql = QueryCompiler.prototype.insert.call(this);
+    if (sql === '') return sql;
+    const { returning } = this.single;
+    return {
+      sql: sql + this._returning(returning),
+      returning,
+    };
+  },
+
+  // Compiles an `update` query, allowing for a return value.
+  update() {
+    const withSQL = this.with();
+    const updateData = this._prepUpdate(this.single.update);
+    const wheres = this.where();
+    const { returning } = this.single;
+    return {
+      sql:
+        withSQL +
+        `update ${this.single.only ? 'only ' : ''}${this.tableName} ` +
+        `set ${updateData.join(', ')}` +
+        (wheres ? ` ${wheres}` : '') +
+        this._returning(returning),
+      returning,
+    };
+  },
+
+  // Compiles an `update` query, allowing for a return value.
+  del() {
+    const sql = QueryCompiler.prototype.del.apply(this, arguments);
+    const { returning } = this.single;
+    return {
+      sql: sql + this._returning(returning),
+      returning,
+    };
+  },
+
+  aggregate(stmt) {
+    return this._aggregate(stmt, { distinctParentheses: true });
+  },
+
+  _returning(value) {
+    return value ? ` returning ${this.formatter.columnize(value)}` : '';
+  },
+
+  // Join array of table names and apply default schema.
+  _tableNames(tables) {
+    const schemaName = this.single.schema;
+    const sql = [];
+
+    for (let i = 0; i < tables.length; i++) {
+      let tableName = tables[i];
+
+      if (tableName) {
+        if (schemaName) {
+          tableName = `${schemaName}.${tableName}`;
+        }
+        sql.push(this.formatter.wrap(tableName));
+      }
+    }
+
+    return sql.join(', ');
+  },
+
+  forUpdate() {
+    const tables = this.single.lockTables || [];
+
+    return (
+      'for update' + (tables.length ? ' of ' + this._tableNames(tables) : '')
+    );
+  },
+
+  forShare() {
+    const tables = this.single.lockTables || [];
+
+    return (
+      'for share' + (tables.length ? ' of ' + this._tableNames(tables) : '')
+    );
+  },
+
+  skipLocked() {
+    return 'skip locked';
+  },
+
+  noWait() {
+    return 'nowait';
+  },
+
+  // Compiles a columnInfo query
+  columnInfo() {
+    const column = this.single.columnInfo;
+    let schema = this.single.schema;
+
+    // The user may have specified a custom wrapIdentifier function in the config. We
+    // need to run the identifiers through that function, but not format them as
+    // identifiers otherwise.
+    const table = this.client.customWrapIdentifier(this.single.table, identity);
+
+    if (schema) {
+      schema = this.client.customWrapIdentifier(schema, identity);
+    }
+
+    let sql =
+      'select * from information_schema.columns where table_name = ? and table_catalog = ?';
+    const bindings = [table, this.client.database()];
+
+    if (schema) {
+      sql += ' and table_schema = ?';
+      bindings.push(schema);
+    } else {
+      sql += ' and table_schema = current_schema()';
+    }
+
+    return {
+      sql,
+      bindings,
+      output(resp) {
+        const out = reduce(
+          resp.rows,
+          function(columns, val) {
+            columns[val.column_name] = {
+              type: val.data_type,
+              maxLength: val.character_maximum_length,
+              nullable: val.is_nullable === 'YES',
+              defaultValue: val.column_default,
+            };
+            return columns;
+          },
+          {}
+        );
+        return (column && out[column]) || out;
+      },
+    };
+  },
+
+  distinctOn(value) {
+    return 'distinct on (' + this.formatter.columnize(value) + ') ';
+  },
+});
+
+module.exports = QueryCompiler_PG;

node_modules/knex/lib/dialects/postgres/schema/columncompiler.js

@@ -0,0 +1,122 @@
+// PostgreSQL Column Compiler
+// -------
+
+const inherits = require('inherits');
+const ColumnCompiler = require('../../../schema/columncompiler');
+const { isObject } = require('lodash');
+
+function ColumnCompiler_PG() {
+  ColumnCompiler.apply(this, arguments);
+  this.modifiers = ['nullable', 'defaultTo', 'comment'];
+}
+inherits(ColumnCompiler_PG, ColumnCompiler);
+
+Object.assign(ColumnCompiler_PG.prototype, {
+  // Types
+  // ------
+  bigincrements: 'bigserial primary key',
+  bigint: 'bigint',
+  binary: 'bytea',
+
+  bit(column) {
+    return column.length !== false ? `bit(${column.length})` : 'bit';
+  },
+
+  bool: 'boolean',
+
+  // Create the column definition for an enum type.
+  // Using method "2" here: http://stackoverflow.com/a/10984951/525714
+  enu(allowed, options) {
+    options = options || {};
+
+    const values =
+      options.useNative && options.existingType
+        ? undefined
+        : allowed.join("', '");
+
+    if (options.useNative) {
+      let enumName = '';
+      const schemaName = options.schemaName || this.tableCompiler.schemaNameRaw;
+
+      if (schemaName) {
+        enumName += `"${schemaName}".`;
+      }
+
+      enumName += `"${options.enumName}"`;
+
+      if (!options.existingType) {
+        this.tableCompiler.unshiftQuery(
+          `create type ${enumName} as enum ('${values}')`
+        );
+      }
+
+      return enumName;
+    }
+    return `text check (${this.formatter.wrap(this.args[0])} in ('${values}'))`;
+  },
+
+  double: 'double precision',
+  decimal(precision, scale) {
+    if (precision === null) return 'decimal';
+    return `decimal(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
+  },
+  floating: 'real',
+  increments: 'serial primary key',
+  json(jsonb) {
+    if (jsonb) this.client.logger.deprecate('json(true)', 'jsonb()');
+    return jsonColumn(this.client, jsonb);
+  },
+  jsonb() {
+    return jsonColumn(this.client, true);
+  },
+  smallint: 'smallint',
+  tinyint: 'smallint',
+  datetime(withoutTz = false, precision) {
+    let useTz;
+    if (isObject(withoutTz)) {
+      ({ useTz, precision } = withoutTz);
+    } else {
+      useTz = !withoutTz;
+    }
+
+    return `${useTz ? 'timestamptz' : 'timestamp'}${
+      precision ? '(' + precision + ')' : ''
+    }`;
+  },
+  timestamp(withoutTz = false, precision) {
+    let useTz;
+    if (isObject(withoutTz)) {
+      ({ useTz, precision } = withoutTz);
+    } else {
+      useTz = !withoutTz;
+    }
+
+    return `${useTz ? 'timestamptz' : 'timestamp'}${
+      precision ? '(' + precision + ')' : ''
+    }`;
+  },
+  uuid: 'uuid',
+
+  // Modifiers:
+  // ------
+  comment(comment) {
+    const columnName = this.args[0] || this.defaults('columnName');
+
+    this.pushAdditional(function() {
+      this.pushQuery(
+        `comment on column ${this.tableCompiler.tableName()}.` +
+          this.formatter.wrap(columnName) +
+          ' is ' +
+          (comment ? `'${comment}'` : 'NULL')
+      );
+    }, comment);
+  },
+});
+
+function jsonColumn(client, jsonb) {
+  if (!client.version || parseFloat(client.version) >= 9.2)
+    return jsonb ? 'jsonb' : 'json';
+  return 'text';
+}
+
+module.exports = ColumnCompiler_PG;

node_modules/knex/lib/dialects/postgres/schema/compiler.js

@@ -0,0 +1,109 @@
+// PostgreSQL Schema Compiler
+// -------
+
+const inherits = require('inherits');
+const SchemaCompiler = require('../../../schema/compiler');
+
+function SchemaCompiler_PG() {
+  SchemaCompiler.apply(this, arguments);
+}
+inherits(SchemaCompiler_PG, SchemaCompiler);
+
+// Check whether the current table
+SchemaCompiler_PG.prototype.hasTable = function(tableName) {
+  let sql = 'select * from information_schema.tables where table_name = ?';
+  const bindings = [tableName];
+
+  if (this.schema) {
+    sql += ' and table_schema = ?';
+    bindings.push(this.schema);
+  } else {
+    sql += ' and table_schema = current_schema()';
+  }
+
+  this.pushQuery({
+    sql,
+    bindings,
+    output(resp) {
+      return resp.rows.length > 0;
+    },
+  });
+};
+
+// Compile the query to determine if a column exists in a table.
+SchemaCompiler_PG.prototype.hasColumn = function(tableName, columnName) {
+  let sql =
+    'select * from information_schema.columns where table_name = ? and column_name = ?';
+  const bindings = [tableName, columnName];
+
+  if (this.schema) {
+    sql += ' and table_schema = ?';
+    bindings.push(this.schema);
+  } else {
+    sql += ' and table_schema = current_schema()';
+  }
+
+  this.pushQuery({
+    sql,
+    bindings,
+    output(resp) {
+      return resp.rows.length > 0;
+    },
+  });
+};
+
+SchemaCompiler_PG.prototype.qualifiedTableName = function(tableName) {
+  const name = this.schema ? `${this.schema}.${tableName}` : tableName;
+  return this.formatter.wrap(name);
+};
+
+// Compile a rename table command.
+SchemaCompiler_PG.prototype.renameTable = function(from, to) {
+  this.pushQuery(
+    `alter table ${this.qualifiedTableName(
+      from
+    )} rename to ${this.formatter.wrap(to)}`
+  );
+};
+
+SchemaCompiler_PG.prototype.createSchema = function(schemaName) {
+  this.pushQuery(`create schema ${this.formatter.wrap(schemaName)}`);
+};
+
+SchemaCompiler_PG.prototype.createSchemaIfNotExists = function(schemaName) {
+  this.pushQuery(
+    `create schema if not exists ${this.formatter.wrap(schemaName)}`
+  );
+};
+
+SchemaCompiler_PG.prototype.dropSchema = function(schemaName) {
+  this.pushQuery(`drop schema ${this.formatter.wrap(schemaName)}`);
+};
+
+SchemaCompiler_PG.prototype.dropSchemaIfExists = function(schemaName) {
+  this.pushQuery(`drop schema if exists ${this.formatter.wrap(schemaName)}`);
+};
+
+SchemaCompiler_PG.prototype.dropExtension = function(extensionName) {
+  this.pushQuery(`drop extension ${this.formatter.wrap(extensionName)}`);
+};
+
+SchemaCompiler_PG.prototype.dropExtensionIfExists = function(extensionName) {
+  this.pushQuery(
+    `drop extension if exists ${this.formatter.wrap(extensionName)}`
+  );
+};
+
+SchemaCompiler_PG.prototype.createExtension = function(extensionName) {
+  this.pushQuery(`create extension ${this.formatter.wrap(extensionName)}`);
+};
+
+SchemaCompiler_PG.prototype.createExtensionIfNotExists = function(
+  extensionName
+) {
+  this.pushQuery(
+    `create extension if not exists ${this.formatter.wrap(extensionName)}`
+  );
+};
+
+module.exports = SchemaCompiler_PG;

node_modules/knex/lib/dialects/postgres/schema/tablecompiler.js

@@ -0,0 +1,183 @@
+/* eslint max-len: 0 */
+
+// PostgreSQL Table Builder & Compiler
+// -------
+
+const inherits = require('inherits');
+const TableCompiler = require('../../../schema/tablecompiler');
+
+const { has } = require('lodash');
+
+function TableCompiler_PG() {
+  TableCompiler.apply(this, arguments);
+}
+inherits(TableCompiler_PG, TableCompiler);
+
+// Compile a rename column command.
+TableCompiler_PG.prototype.renameColumn = function(from, to) {
+  return this.pushQuery({
+    sql: `alter table ${this.tableName()} rename ${this.formatter.wrap(
+      from
+    )} to ${this.formatter.wrap(to)}`,
+  });
+};
+
+TableCompiler_PG.prototype.compileAdd = function(builder) {
+  const table = this.formatter.wrap(builder);
+  const columns = this.prefixArray('add column', this.getColumns(builder));
+  return this.pushQuery({
+    sql: `alter table ${table} ${columns.join(', ')}`,
+  });
+};
+
+// Adds the "create" query to the query sequence.
+TableCompiler_PG.prototype.createQuery = function(columns, ifNot) {
+  const createStatement = ifNot
+    ? 'create table if not exists '
+    : 'create table ';
+  let sql =
+    createStatement + this.tableName() + ' (' + columns.sql.join(', ') + ')';
+  if (this.single.inherits)
+    sql += ` inherits (${this.formatter.wrap(this.single.inherits)})`;
+  this.pushQuery({
+    sql,
+    bindings: columns.bindings,
+  });
+  const hasComment = has(this.single, 'comment');
+  if (hasComment) this.comment(this.single.comment);
+};
+
+TableCompiler_PG.prototype.addColumns = function(
+  columns,
+  prefix,
+  colCompilers
+) {
+  if (prefix === this.alterColumnsPrefix) {
+    // alter columns
+    for (const col of colCompilers) {
+      const quotedTableName = this.tableName();
+      const type = col.getColumnType();
+      // We'd prefer to call this.formatter.wrapAsIdentifier here instead, however the context passed to
+      // `this` instance is not that of the column, but of the table. Thus, we unfortunately have to call
+      // `wrapIdentifier` here as well (it is already called once on the initial column operation) to give
+      // our `alter` operation the correct `queryContext`. Refer to issue #2606 and PR #2612.
+      const colName = this.client.wrapIdentifier(
+        col.getColumnName(),
+        col.columnBuilder.queryContext()
+      );
+
+      this.pushQuery({
+        sql: `alter table ${quotedTableName} alter column ${colName} drop default`,
+        bindings: [],
+      });
+      this.pushQuery({
+        sql: `alter table ${quotedTableName} alter column ${colName} drop not null`,
+        bindings: [],
+      });
+      this.pushQuery({
+        sql: `alter table ${quotedTableName} alter column ${colName} type ${type} using (${colName}::${type})`,
+        bindings: [],
+      });
+
+      const defaultTo = col.modified['defaultTo'];
+      if (defaultTo) {
+        const modifier = col.defaultTo.apply(col, defaultTo);
+        this.pushQuery({
+          sql: `alter table ${quotedTableName} alter column ${colName} set ${modifier}`,
+          bindings: [],
+        });
+      }
+
+      const nullable = col.modified['nullable'];
+      if (nullable && nullable[0] === false) {
+        this.pushQuery({
+          sql: `alter table ${quotedTableName} alter column ${colName} set not null`,
+          bindings: [],
+        });
+      }
+    }
+  } else {
+    // base class implementation for normal add
+    TableCompiler.prototype.addColumns.call(this, columns, prefix);
+  }
+};
+
+// Compiles the comment on the table.
+TableCompiler_PG.prototype.comment = function(comment) {
+  this.pushQuery(
+    `comment on table ${this.tableName()} is '${this.single.comment}'`
+  );
+};
+
+// Indexes:
+// -------
+
+TableCompiler_PG.prototype.primary = function(columns, constraintName) {
+  constraintName = constraintName
+    ? this.formatter.wrap(constraintName)
+    : this.formatter.wrap(`${this.tableNameRaw}_pkey`);
+  this.pushQuery(
+    `alter table ${this.tableName()} add constraint ${constraintName} primary key (${this.formatter.columnize(
+      columns
+    )})`
+  );
+};
+TableCompiler_PG.prototype.unique = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('unique', this.tableNameRaw, columns);
+  this.pushQuery(
+    `alter table ${this.tableName()} add constraint ${indexName}` +
+      ' unique (' +
+      this.formatter.columnize(columns) +
+      ')'
+  );
+};
+TableCompiler_PG.prototype.index = function(columns, indexName, indexType) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('index', this.tableNameRaw, columns);
+  this.pushQuery(
+    `create index ${indexName} on ${this.tableName()}${(indexType &&
+      ` using ${indexType}`) ||
+      ''}` +
+      ' (' +
+      this.formatter.columnize(columns) +
+      ')'
+  );
+};
+TableCompiler_PG.prototype.dropPrimary = function(constraintName) {
+  constraintName = constraintName
+    ? this.formatter.wrap(constraintName)
+    : this.formatter.wrap(this.tableNameRaw + '_pkey');
+  this.pushQuery(
+    `alter table ${this.tableName()} drop constraint ${constraintName}`
+  );
+};
+TableCompiler_PG.prototype.dropIndex = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('index', this.tableNameRaw, columns);
+  indexName = this.schemaNameRaw
+    ? `${this.formatter.wrap(this.schemaNameRaw)}.${indexName}`
+    : indexName;
+  this.pushQuery(`drop index ${indexName}`);
+};
+TableCompiler_PG.prototype.dropUnique = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('unique', this.tableNameRaw, columns);
+  this.pushQuery(
+    `alter table ${this.tableName()} drop constraint ${indexName}`
+  );
+};
+TableCompiler_PG.prototype.dropForeign = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('foreign', this.tableNameRaw, columns);
+  this.pushQuery(
+    `alter table ${this.tableName()} drop constraint ${indexName}`
+  );
+};
+
+module.exports = TableCompiler_PG;

node_modules/knex/lib/dialects/redshift/index.js

@@ -0,0 +1,73 @@
+// Redshift
+// -------
+const inherits = require('inherits');
+const Client_PG = require('../postgres');
+const { map } = require('lodash');
+
+const Transaction = require('./transaction');
+const QueryCompiler = require('./query/compiler');
+const ColumnBuilder = require('./schema/columnbuilder');
+const ColumnCompiler = require('./schema/columncompiler');
+const TableCompiler = require('./schema/tablecompiler');
+const SchemaCompiler = require('./schema/compiler');
+
+function Client_Redshift(config) {
+  Client_PG.apply(this, arguments);
+}
+inherits(Client_Redshift, Client_PG);
+
+Object.assign(Client_Redshift.prototype, {
+  transaction() {
+    return new Transaction(this, ...arguments);
+  },
+
+  queryCompiler() {
+    return new QueryCompiler(this, ...arguments);
+  },
+
+  columnBuilder() {
+    return new ColumnBuilder(this, ...arguments);
+  },
+
+  columnCompiler() {
+    return new ColumnCompiler(this, ...arguments);
+  },
+
+  tableCompiler() {
+    return new TableCompiler(this, ...arguments);
+  },
+
+  schemaCompiler() {
+    return new SchemaCompiler(this, ...arguments);
+  },
+
+  dialect: 'redshift',
+
+  driverName: 'pg-redshift',
+
+  _driver() {
+    return require('pg');
+  },
+
+  // Ensures the response is returned in the same format as other clients.
+  processResponse(obj, runner) {
+    const resp = obj.response;
+    if (obj.output) return obj.output.call(runner, resp);
+    if (obj.method === 'raw') return resp;
+    if (resp.command === 'SELECT') {
+      if (obj.method === 'first') return resp.rows[0];
+      if (obj.method === 'pluck') return map(resp.rows, obj.pluck);
+      return resp.rows;
+    }
+    if (
+      resp.command === 'INSERT' ||
+      resp.command === 'UPDATE' ||
+      resp.command === 'DELETE'
+    ) {
+      return resp.rowCount;
+    }
+    return resp;
+  },
+});
+
+module.exports = Client_Redshift;

node_modules/knex/lib/dialects/redshift/query/compiler.js

@@ -0,0 +1,122 @@
+// Redshift Query Builder & Compiler
+// ------
+const inherits = require('inherits');
+
+const QueryCompiler = require('../../../query/compiler');
+const QueryCompiler_PG = require('../../postgres/query/compiler');
+
+const { reduce, identity } = require('lodash');
+
+function QueryCompiler_Redshift(client, builder) {
+  QueryCompiler_PG.call(this, client, builder);
+}
+
+inherits(QueryCompiler_Redshift, QueryCompiler_PG);
+
+Object.assign(QueryCompiler_Redshift.prototype, {
+  truncate() {
+    return `truncate ${this.tableName.toLowerCase()}`;
+  },
+
+  // Compiles an `insert` query, allowing for multiple
+  // inserts using a single query statement.
+  insert() {
+    const sql = QueryCompiler.prototype.insert.apply(this, arguments);
+    if (sql === '') return sql;
+    this._slightReturn();
+    return {
+      sql,
+    };
+  },
+
+  // Compiles an `update` query, warning on unsupported returning
+  update() {
+    const sql = QueryCompiler.prototype.update.apply(this, arguments);
+    this._slightReturn();
+    return {
+      sql,
+    };
+  },
+
+  // Compiles an `delete` query, warning on unsupported returning
+  del() {
+    const sql = QueryCompiler.prototype.del.apply(this, arguments);
+    this._slightReturn();
+    return {
+      sql,
+    };
+  },
+
+  // simple: if trying to return, warn
+  _slightReturn() {
+    if (this.single.isReturning) {
+      this.client.logger.warn(
+        'insert/update/delete returning is not supported by redshift dialect'
+      );
+    }
+  },
+
+  forUpdate() {
+    this.client.logger.warn('table lock is not supported by redshift dialect');
+    return '';
+  },
+
+  forShare() {
+    this.client.logger.warn(
+      'lock for share is not supported by redshift dialect'
+    );
+    return '';
+  },
+
+  // Compiles a columnInfo query
+  columnInfo() {
+    const column = this.single.columnInfo;
+    let schema = this.single.schema;
+
+    // The user may have specified a custom wrapIdentifier function in the config. We
+    // need to run the identifiers through that function, but not format them as
+    // identifiers otherwise.
+    const table = this.client.customWrapIdentifier(this.single.table, identity);
+
+    if (schema) {
+      schema = this.client.customWrapIdentifier(schema, identity);
+    }
+
+    let sql =
+      'select * from information_schema.columns where table_name = ? and table_catalog = ?';
+    const bindings = [
+      table.toLowerCase(),
+      this.client.database().toLowerCase(),
+    ];
+
+    if (schema) {
+      sql += ' and table_schema = ?';
+      bindings.push(schema);
+    } else {
+      sql += ' and table_schema = current_schema()';
+    }
+
+    return {
+      sql,
+      bindings,
+      output(resp) {
+        const out = reduce(
+          resp.rows,
+          function(columns, val) {
+            columns[val.column_name] = {
+              type: val.data_type,
+              maxLength: val.character_maximum_length,
+              nullable: val.is_nullable === 'YES',
+              defaultValue: val.column_default,
+            };
+            return columns;
+          },
+          {}
+        );
+        return (column && out[column]) || out;
+      },
+    };
+  },
+});
+
+module.exports = QueryCompiler_Redshift;

node_modules/knex/lib/dialects/redshift/schema/columnbuilder.js

@@ -0,0 +1,20 @@
+const inherits = require('inherits');
+const ColumnBuilder = require('../../../schema/columnbuilder');
+
+function ColumnBuilder_Redshift() {
+  ColumnBuilder.apply(this, arguments);
+}
+inherits(ColumnBuilder_Redshift, ColumnBuilder);
+
+// primary needs to set not null on non-preexisting columns, or fail
+ColumnBuilder_Redshift.prototype.primary = function() {
+  this.notNullable();
+  return ColumnBuilder.prototype.primary.apply(this, arguments);
+};
+
+ColumnBuilder_Redshift.prototype.index = function() {
+  this.client.logger.warn('Redshift does not support the creation of indexes.');
+  return this;
+};
+
+module.exports = ColumnBuilder_Redshift;

node_modules/knex/lib/dialects/redshift/schema/columncompiler.js

@@ -0,0 +1,60 @@
+// Redshift Column Compiler
+// -------
+
+const inherits = require('inherits');
+const ColumnCompiler_PG = require('../../postgres/schema/columncompiler');
+
+function ColumnCompiler_Redshift() {
+  ColumnCompiler_PG.apply(this, arguments);
+}
+inherits(ColumnCompiler_Redshift, ColumnCompiler_PG);
+
+Object.assign(ColumnCompiler_Redshift.prototype, {
+  // Types:
+  // ------
+  bigincrements: 'bigint identity(1,1) primary key not null',
+  binary: 'varchar(max)',
+  bit(column) {
+    return column.length !== false ? `char(${column.length})` : 'char(1)';
+  },
+  blob: 'varchar(max)',
+  enu: 'varchar(255)',
+  enum: 'varchar(255)',
+  increments: 'integer identity(1,1) primary key not null',
+  json: 'varchar(max)',
+  jsonb: 'varchar(max)',
+  longblob: 'varchar(max)',
+  mediumblob: 'varchar(16777218)',
+  set: 'text',
+  text: 'varchar(max)',
+  datetime(without) {
+    return without ? 'timestamp' : 'timestamptz';
+  },
+  timestamp(without) {
+    return without ? 'timestamp' : 'timestamptz';
+  },
+  tinyblob: 'varchar(256)',
+  uuid: 'char(36)',
+  varbinary: 'varchar(max)',
+  bigint: 'bigint',
+  bool: 'boolean',
+  double: 'double precision',
+  floating: 'real',
+  smallint: 'smallint',
+  tinyint: 'smallint',
+
+  // Modifiers:
+  // ------
+  comment(comment) {
+    this.pushAdditional(function() {
+      this.pushQuery(
+        `comment on column ${this.tableCompiler.tableName()}.` +
+          this.formatter.wrap(this.args[0]) +
+          ' is ' +
+          (comment ? `'${comment}'` : 'NULL')
+      );
+    }, comment);
+  },
+});
+
+module.exports = ColumnCompiler_Redshift;

node_modules/knex/lib/dialects/redshift/schema/compiler.js

@@ -0,0 +1,14 @@
+/* eslint max-len: 0 */
+
+// Redshift Table Builder & Compiler
+// -------
+
+const inherits = require('inherits');
+const SchemaCompiler_PG = require('../../postgres/schema/compiler');
+
+function SchemaCompiler_Redshift() {
+  SchemaCompiler_PG.apply(this, arguments);
+}
+inherits(SchemaCompiler_Redshift, SchemaCompiler_PG);
+
+module.exports = SchemaCompiler_Redshift;

node_modules/knex/lib/dialects/redshift/schema/tablecompiler.js

@@ -0,0 +1,123 @@
+/* eslint max-len: 0 */
+
+// Redshift Table Builder & Compiler
+// -------
+
+const inherits = require('inherits');
+const { has } = require('lodash');
+const TableCompiler_PG = require('../../postgres/schema/tablecompiler');
+
+function TableCompiler_Redshift() {
+  TableCompiler_PG.apply(this, arguments);
+}
+inherits(TableCompiler_Redshift, TableCompiler_PG);
+
+TableCompiler_Redshift.prototype.index = function(
+  columns,
+  indexName,
+  indexType
+) {
+  this.client.logger.warn('Redshift does not support the creation of indexes.');
+};
+
+TableCompiler_Redshift.prototype.dropIndex = function(columns, indexName) {
+  this.client.logger.warn('Redshift does not support the deletion of indexes.');
+};
+
+// TODO: have to disable setting not null on columns that already exist...
+
+// Adds the "create" query to the query sequence.
+TableCompiler_Redshift.prototype.createQuery = function(columns, ifNot) {
+  const createStatement = ifNot
+    ? 'create table if not exists '
+    : 'create table ';
+  let sql =
+    createStatement + this.tableName() + ' (' + columns.sql.join(', ') + ')';
+  if (this.single.inherits)
+    sql += ` like (${this.formatter.wrap(this.single.inherits)})`;
+  this.pushQuery({
+    sql,
+    bindings: columns.bindings,
+  });
+  const hasComment = has(this.single, 'comment');
+  if (hasComment) this.comment(this.single.comment);
+};
+
+TableCompiler_Redshift.prototype.primary = function(columns, constraintName) {
+  const self = this;
+  constraintName = constraintName
+    ? self.formatter.wrap(constraintName)
+    : self.formatter.wrap(`${this.tableNameRaw}_pkey`);
+  if (columns.constructor !== Array) {
+    columns = [columns];
+  }
+  const thiscolumns = self.grouped.columns;
+
+  if (thiscolumns) {
+    for (let i = 0; i < columns.length; i++) {
+      let exists = thiscolumns.find(
+        (tcb) =>
+          tcb.grouping === 'columns' &&
+          tcb.builder &&
+          tcb.builder._method === 'add' &&
+          tcb.builder._args &&
+          tcb.builder._args.indexOf(columns[i]) > -1
+      );
+      if (exists) {
+        exists = exists.builder;
+      }
+      const nullable = !(
+        exists &&
+        exists._modifiers &&
+        exists._modifiers['nullable'] &&
+        exists._modifiers['nullable'][0] === false
+      );
+      if (nullable) {
+        if (exists) {
+          return this.client.logger.warn(
+            'Redshift does not allow primary keys to contain nullable columns.'
+          );
+        } else {
+          return this.client.logger.warn(
+            'Redshift does not allow primary keys to contain nonexistent columns.'
+          );
+        }
+      }
+    }
+  }
+  return self.pushQuery(
+    `alter table ${self.tableName()} add constraint ${constraintName} primary key (${self.formatter.columnize(
+      columns
+    )})`
+  );
+};
+
+// Compiles column add. Redshift can only add one column per ALTER TABLE, so core addColumns doesn't work.  #2545
+TableCompiler_Redshift.prototype.addColumns = function(
+  columns,
+  prefix,
+  colCompilers
+) {
+  if (prefix === this.alterColumnsPrefix) {
+    TableCompiler_PG.prototype.addColumns.call(
+      this,
+      columns,
+      prefix,
+      colCompilers
+    );
+  } else {
+    prefix = prefix || this.addColumnsPrefix;
+    colCompilers = colCompilers || this.getColumns();
+    for (const col of colCompilers) {
+      const quotedTableName = this.tableName();
+      const colCompiled = col.compileColumn();
+
+      this.pushQuery({
+        sql: `alter table ${quotedTableName} ${prefix}${colCompiled}`,
+        bindings: [],
+      });
+    }
+  }
+};
+
+module.exports = TableCompiler_Redshift;

node_modules/knex/lib/dialects/redshift/transaction.js

@@ -0,0 +1,18 @@
+const Transaction = require('../../transaction');
+
+module.exports = class Redshift_Transaction extends Transaction {
+  savepoint(conn) {
+    this.trxClient.logger('Redshift does not support savepoints.');
+    return Promise.resolve();
+  }
+
+  release(conn, value) {
+    this.trxClient.logger('Redshift does not support savepoints.');
+    return Promise.resolve();
+  }
+
+  rollbackTo(conn, error) {
+    this.trxClient.logger('Redshift does not support savepoints.');
+    return Promise.resolve();
+  }
+};

node_modules/knex/lib/dialects/sqlite3/formatter.js

@@ -0,0 +1,21 @@
+const Formatter = require('../../formatter');
+const Raw = require('../../raw');
+
+module.exports = class SQlite3_Formatter extends Formatter {
+  values(values) {
+    if (Array.isArray(values)) {
+      if (Array.isArray(values[0])) {
+        return `( values ${values
+          .map((value) => `(${this.parameterize(value)})`)
+          .join(', ')})`;
+      }
+      return `(${this.parameterize(values)})`;
+    }
+
+    if (values instanceof Raw) {
+      return `(${this.parameter(values)})`;
+    }
+
+    return this.parameter(values);
+  }
+};

node_modules/knex/lib/dialects/sqlite3/index.js

@@ -0,0 +1,171 @@
+// SQLite3
+// -------
+const Bluebird = require('bluebird');
+
+const inherits = require('inherits');
+const { isUndefined, map, defaults } = require('lodash');
+const { promisify } = require('util');
+
+const Client = require('../../client');
+
+const QueryCompiler = require('./query/compiler');
+const SchemaCompiler = require('./schema/compiler');
+const ColumnCompiler = require('./schema/columncompiler');
+const TableCompiler = require('./schema/tablecompiler');
+const SQLite3_DDL = require('./schema/ddl');
+const SQLite3_Formatter = require('./formatter');
+
+function Client_SQLite3(config) {
+  Client.call(this, config);
+  if (isUndefined(config.useNullAsDefault)) {
+    this.logger.warn(
+      'sqlite does not support inserting default values. Set the ' +
+        '`useNullAsDefault` flag to hide this warning. ' +
+        '(see docs http://knexjs.org/#Builder-insert).'
+    );
+  }
+}
+
+inherits(Client_SQLite3, Client);
+
+Object.assign(Client_SQLite3.prototype, {
+  dialect: 'sqlite3',
+
+  driverName: 'sqlite3',
+
+  _driver() {
+    return require('sqlite3');
+  },
+
+  schemaCompiler() {
+    return new SchemaCompiler(this, ...arguments);
+  },
+
+  queryCompiler() {
+    return new QueryCompiler(this, ...arguments);
+  },
+
+  columnCompiler() {
+    return new ColumnCompiler(this, ...arguments);
+  },
+
+  tableCompiler() {
+    return new TableCompiler(this, ...arguments);
+  },
+
+  ddl(compiler, pragma, connection) {
+    return new SQLite3_DDL(this, compiler, pragma, connection);
+  },
+
+  wrapIdentifierImpl(value) {
+    return value !== '*' ? `\`${value.replace(/`/g, '``')}\`` : '*';
+  },
+
+  // Get a raw connection from the database, returning a promise with the connection object.
+  acquireRawConnection() {
+    return new Bluebird((resolve, reject) => {
+      const db = new this.driver.Database(
+        this.connectionSettings.filename,
+        (err) => {
+          if (err) {
+            return reject(err);
+          }
+          resolve(db);
+        }
+      );
+    });
+  },
+
+  // Used to explicitly close a connection, called internally by the pool when
+  // a connection times out or the pool is shutdown.
+  async destroyRawConnection(connection) {
+    const close = promisify((cb) => connection.close(cb));
+    return close();
+  },
+
+  // Runs the query on the specified connection, providing the bindings and any
+  // other necessary prep work.
+  _query(connection, obj) {
+    const { method } = obj;
+    let callMethod;
+    switch (method) {
+      case 'insert':
+      case 'update':
+      case 'counter':
+      case 'del':
+        callMethod = 'run';
+        break;
+      default:
+        callMethod = 'all';
+    }
+    return new Bluebird(function(resolver, rejecter) {
+      if (!connection || !connection[callMethod]) {
+        return rejecter(
+          new Error(`Error calling ${callMethod} on connection.`)
+        );
+      }
+      connection[callMethod](obj.sql, obj.bindings, function(err, response) {
+        if (err) return rejecter(err);
+        obj.response = response;
+
+        // We need the context here, as it contains
+        // the "this.lastID" or "this.changes"
+        obj.context = this;
+        return resolver(obj);
+      });
+    });
+  },
+
+  _stream(connection, sql, stream) {
+    const client = this;
+    return new Bluebird(function(resolver, rejecter) {
+      stream.on('error', rejecter);
+      stream.on('end', resolver);
+      return client
+        ._query(connection, sql)
+        .then((obj) => obj.response)
+        .then((rows) => rows.forEach((row) => stream.write(row)))
+        .catch(function(err) {
+          stream.emit('error', err);
+        })
+        .then(function() {
+          stream.end();
+        });
+    });
+  },
+
+  // Ensures the response is returned in the same format as other clients.
+  processResponse(obj, runner) {
+    const ctx = obj.context;
+    let { response } = obj;
+    if (obj.output) return obj.output.call(runner, response);
+    switch (obj.method) {
+      case 'select':
+      case 'pluck':
+      case 'first':
+        if (obj.method === 'pluck') response = map(response, obj.pluck);
+        return obj.method === 'first' ? response[0] : response;
+      case 'insert':
+        return [ctx.lastID];
+      case 'del':
+      case 'update':
+      case 'counter':
+        return ctx.changes;
+      default:
+        return response;
+    }
+  },
+
+  poolDefaults() {
+    return defaults(
+      { min: 1, max: 1 },
+      Client.prototype.poolDefaults.call(this)
+    );
+  },
+
+  formatter() {
+    return new SQLite3_Formatter(this, ...arguments);
+  },
+});
+
+module.exports = Client_SQLite3;

node_modules/knex/lib/dialects/sqlite3/query/compiler.js

@@ -0,0 +1,176 @@
+// SQLite3 Query Builder & Compiler
+
+const inherits = require('inherits');
+const QueryCompiler = require('../../../query/compiler');
+const {
+  assign,
+  each,
+  isEmpty,
+  isString,
+  noop,
+  reduce,
+  identity,
+} = require('lodash');
+
+function QueryCompiler_SQLite3(client, builder) {
+  QueryCompiler.call(this, client, builder);
+
+  const { returning } = this.single;
+
+  if (returning) {
+    this.client.logger.warn(
+      '.returning() is not supported by sqlite3 and will not have any effect.'
+    );
+  }
+}
+
+inherits(QueryCompiler_SQLite3, QueryCompiler);
+
+assign(QueryCompiler_SQLite3.prototype, {
+  // The locks are not applicable in SQLite3
+  forShare: emptyStr,
+
+  forUpdate: emptyStr,
+
+  // SQLite requires us to build the multi-row insert as a listing of select with
+  // unions joining them together. So we'll build out this list of columns and
+  // then join them all together with select unions to complete the queries.
+  insert() {
+    const insertValues = this.single.insert || [];
+    let sql = this.with() + `insert into ${this.tableName} `;
+
+    if (Array.isArray(insertValues)) {
+      if (insertValues.length === 0) {
+        return '';
+      } else if (
+        insertValues.length === 1 &&
+        insertValues[0] &&
+        isEmpty(insertValues[0])
+      ) {
+        return sql + this._emptyInsertValue;
+      }
+    } else if (typeof insertValues === 'object' && isEmpty(insertValues)) {
+      return sql + this._emptyInsertValue;
+    }
+
+    const insertData = this._prepInsert(insertValues);
+
+    if (isString(insertData)) {
+      return sql + insertData;
+    }
+
+    if (insertData.columns.length === 0) {
+      return '';
+    }
+
+    sql += `(${this.formatter.columnize(insertData.columns)})`;
+
+    // backwards compatible error
+    if (this.client.valueForUndefined !== null) {
+      each(insertData.values, (bindings) => {
+        each(bindings, (binding) => {
+          if (binding === undefined)
+            throw new TypeError(
+              '`sqlite` does not support inserting default values. Specify ' +
+                'values explicitly or use the `useNullAsDefault` config flag. ' +
+                '(see docs http://knexjs.org/#Builder-insert).'
+            );
+        });
+      });
+    }
+
+    if (insertData.values.length === 1) {
+      const parameters = this.formatter.parameterize(
+        insertData.values[0],
+        this.client.valueForUndefined
+      );
+      return sql + ` values (${parameters})`;
+    }
+
+    const blocks = [];
+    let i = -1;
+    while (++i < insertData.values.length) {
+      let i2 = -1;
+      const block = (blocks[i] = []);
+      let current = insertData.values[i];
+      current = current === undefined ? this.client.valueForUndefined : current;
+      while (++i2 < insertData.columns.length) {
+        block.push(
+          this.formatter.alias(
+            this.formatter.parameter(current[i2]),
+            this.formatter.wrap(insertData.columns[i2])
+          )
+        );
+      }
+      blocks[i] = block.join(', ');
+    }
+    return sql + ' select ' + blocks.join(' union all select ');
+  },
+
+  // Compile a truncate table statement into SQL.
+  truncate() {
+    const { table } = this.single;
+    return {
+      sql: `delete from ${this.tableName}`,
+      output() {
+        return this.query({
+          sql: `delete from sqlite_sequence where name = '${table}'`,
+        }).catch(noop);
+      },
+    };
+  },
+
+  // Compiles a `columnInfo` query
+  columnInfo() {
+    const column = this.single.columnInfo;
+
+    // The user may have specified a custom wrapIdentifier function in the config. We
+    // need to run the identifiers through that function, but not format them as
+    // identifiers otherwise.
+    const table = this.client.customWrapIdentifier(this.single.table, identity);
+
+    return {
+      sql: `PRAGMA table_info(\`${table}\`)`,
+      output(resp) {
+        const maxLengthRegex = /.*\((\d+)\)/;
+        const out = reduce(
+          resp,
+          function(columns, val) {
+            let { type } = val;
+            let maxLength = type.match(maxLengthRegex);
+            if (maxLength) {
+              maxLength = maxLength[1];
+            }
+            type = maxLength ? type.split('(')[0] : type;
+            columns[val.name] = {
+              type: type.toLowerCase(),
+              maxLength,
+              nullable: !val.notnull,
+              defaultValue: val.dflt_value,
+            };
+            return columns;
+          },
+          {}
+        );
+        return (column && out[column]) || out;
+      },
+    };
+  },
+
+  limit() {
+    const noLimit = !this.single.limit && this.single.limit !== 0;
+    if (noLimit && !this.single.offset) return '';
+
+    // Workaround for offset only,
+    // see http://stackoverflow.com/questions/10491492/sqllite-with-skip-offset-only-not-limit
+    return `limit ${this.formatter.parameter(
+      noLimit ? -1 : this.single.limit
+    )}`;
+  },
+});
+
+function emptyStr() {
+  return '';
+}
+
+module.exports = QueryCompiler_SQLite3;

node_modules/knex/lib/dialects/sqlite3/schema/columncompiler.js

@@ -0,0 +1,27 @@
+const inherits = require('inherits');
+const ColumnCompiler = require('../../../schema/columncompiler');
+
+// Column Compiler
+// -------
+
+function ColumnCompiler_SQLite3() {
+  ColumnCompiler.apply(this, arguments);
+  this.modifiers = ['nullable', 'defaultTo'];
+}
+inherits(ColumnCompiler_SQLite3, ColumnCompiler);
+
+// Types
+// -------
+
+ColumnCompiler_SQLite3.prototype.double = ColumnCompiler_SQLite3.prototype.decimal = ColumnCompiler_SQLite3.prototype.floating =
+  'float';
+ColumnCompiler_SQLite3.prototype.timestamp = 'datetime';
+ColumnCompiler_SQLite3.prototype.enu = function(allowed) {
+  return `text check (${this.formatter.wrap(this.args[0])} in ('${allowed.join(
+    "', '"
+  )}'))`;
+};
+
+ColumnCompiler_SQLite3.prototype.json = 'json';
+
+module.exports = ColumnCompiler_SQLite3;

node_modules/knex/lib/dialects/sqlite3/schema/compiler.js

@@ -0,0 +1,49 @@
+// SQLite3: Column Builder & Compiler
+// -------
+const inherits = require('inherits');
+const SchemaCompiler = require('../../../schema/compiler');
+
+const { some } = require('lodash');
+
+// Schema Compiler
+// -------
+
+function SchemaCompiler_SQLite3() {
+  SchemaCompiler.apply(this, arguments);
+}
+
+inherits(SchemaCompiler_SQLite3, SchemaCompiler);
+
+// Compile the query to determine if a table exists.
+SchemaCompiler_SQLite3.prototype.hasTable = function(tableName) {
+  const sql =
+    `select * from sqlite_master ` +
+    `where type = 'table' and name = ${this.formatter.parameter(tableName)}`;
+  this.pushQuery({ sql, output: (resp) => resp.length > 0 });
+};
+
+// Compile the query to determine if a column exists.
+SchemaCompiler_SQLite3.prototype.hasColumn = function(tableName, column) {
+  this.pushQuery({
+    sql: `PRAGMA table_info(${this.formatter.wrap(tableName)})`,
+    output(resp) {
+      return some(resp, (col) => {
+        return (
+          this.client.wrapIdentifier(col.name.toLowerCase()) ===
+          this.client.wrapIdentifier(column.toLowerCase())
+        );
+      });
+    },
+  });
+};
+
+// Compile a rename table command.
+SchemaCompiler_SQLite3.prototype.renameTable = function(from, to) {
+  this.pushQuery(
+    `alter table ${this.formatter.wrap(from)} rename to ${this.formatter.wrap(
+      to
+    )}`
+  );
+};
+
+module.exports = SchemaCompiler_SQLite3;

node_modules/knex/lib/dialects/sqlite3/schema/ddl.js

@@ -0,0 +1,330 @@
+// SQLite3_DDL
+//
+// All of the SQLite3 specific DDL helpers for renaming/dropping
+// columns and changing datatypes.
+// -------
+
+const {
+  assign,
+  uniqueId,
+  find,
+  identity,
+  map,
+  omit,
+  invert,
+  fromPairs,
+  some,
+  negate,
+  isEmpty,
+  chunk,
+} = require('lodash');
+
+// So altering the schema in SQLite3 is a major pain.
+// We have our own object to deal with the renaming and altering the types
+// for sqlite3 things.
+function SQLite3_DDL(client, tableCompiler, pragma, connection) {
+  this.client = client;
+  this.tableCompiler = tableCompiler;
+  this.pragma = pragma;
+  this.tableNameRaw = this.tableCompiler.tableNameRaw;
+  this.alteredName = uniqueId('_knex_temp_alter');
+  this.connection = connection;
+  this.formatter =
+    client && client.config && client.config.wrapIdentifier
+      ? client.config.wrapIdentifier
+      : (value) => value;
+}
+
+assign(SQLite3_DDL.prototype, {
+  tableName() {
+    return this.formatter(this.tableNameRaw, (value) => value);
+  },
+
+  getColumn: async function(column) {
+    const currentCol = find(this.pragma, (col) => {
+      return (
+        this.client.wrapIdentifier(col.name).toLowerCase() ===
+        this.client.wrapIdentifier(column).toLowerCase()
+      );
+    });
+    if (!currentCol)
+      throw new Error(
+        `The column ${column} is not in the ${this.tableName()} table`
+      );
+    return currentCol;
+  },
+
+  getTableSql() {
+    this.trx.disableProcessing();
+    return this.trx
+      .raw(
+        `SELECT name, sql FROM sqlite_master WHERE type="table" AND name="${this.tableName()}"`
+      )
+      .then((result) => {
+        this.trx.enableProcessing();
+        return result;
+      });
+  },
+
+  renameTable: async function() {
+    return this.trx.raw(
+      `ALTER TABLE "${this.tableName()}" RENAME TO "${this.alteredName}"`
+    );
+  },
+
+  dropOriginal() {
+    return this.trx.raw(`DROP TABLE "${this.tableName()}"`);
+  },
+
+  dropTempTable() {
+    return this.trx.raw(`DROP TABLE "${this.alteredName}"`);
+  },
+
+  copyData() {
+    return this.trx
+      .raw(`SELECT * FROM "${this.tableName()}"`)
+      .then((result) =>
+        this.insertChunked(20, this.alteredName, identity, result)
+      );
+  },
+
+  reinsertData(iterator) {
+    return this.trx
+      .raw(`SELECT * FROM "${this.alteredName}"`)
+      .then((result) =>
+        this.insertChunked(20, this.tableName(), iterator, result)
+      );
+  },
+
+  async insertChunked(chunkSize, target, iterator, result) {
+    iterator = iterator || identity;
+    const chunked = chunk(result, chunkSize);
+    for (const batch of chunked) {
+      await this.trx
+        .queryBuilder()
+        .table(target)
+        .insert(map(batch, iterator));
+    }
+  },
+
+  createTempTable(createTable) {
+    return this.trx.raw(
+      createTable.sql.replace(this.tableName(), this.alteredName)
+    );
+  },
+
+  _doReplace(sql, from, to) {
+    const oneLineSql = sql.replace(/\s+/g, ' ');
+    const matched = oneLineSql.match(/^CREATE TABLE\s+(\S+)\s*\((.*)\)/);
+
+    const tableName = matched[1];
+    const defs = matched[2];
+
+    if (!defs) {
+      throw new Error('No column definitions in this statement!');
+    }
+
+    let parens = 0,
+      args = [],
+      ptr = 0;
+    let i = 0;
+    const x = defs.length;
+    for (i = 0; i < x; i++) {
+      switch (defs[i]) {
+        case '(':
+          parens++;
+          break;
+        case ')':
+          parens--;
+          break;
+        case ',':
+          if (parens === 0) {
+            args.push(defs.slice(ptr, i));
+            ptr = i + 1;
+          }
+          break;
+        case ' ':
+          if (ptr === i) {
+            ptr = i + 1;
+          }
+          break;
+      }
+    }
+    args.push(defs.slice(ptr, i));
+
+    const fromIdentifier = from.replace(/[`"'[\]]/g, '');
+
+    args = args.map((item) => {
+      let split = item.trim().split(' ');
+
+      // SQLite supports all quoting mechanisms prevalent in all major dialects of SQL
+      // and preserves the original quoting in sqlite_master.
+      //
+      // Also, identifiers are never case sensitive, not even when quoted.
+      //
+      // Ref: https://www.sqlite.org/lang_keywords.html
+      const fromMatchCandidates = [
+        new RegExp(`\`${fromIdentifier}\``, 'i'),
+        new RegExp(`"${fromIdentifier}"`, 'i'),
+        new RegExp(`'${fromIdentifier}'`, 'i'),
+        new RegExp(`\\[${fromIdentifier}\\]`, 'i'),
+      ];
+      if (fromIdentifier.match(/^\S+$/)) {
+        fromMatchCandidates.push(new RegExp(`\\b${fromIdentifier}\\b`, 'i'));
+      }
+
+      const doesMatchFromIdentifier = (target) =>
+        some(fromMatchCandidates, (c) => target.match(c));
+
+      const replaceFromIdentifier = (target) =>
+        fromMatchCandidates.reduce(
+          (result, candidate) => result.replace(candidate, to),
+          target
+        );
+
+      if (doesMatchFromIdentifier(split[0])) {
+        // column definition
+        if (to) {
+          split[0] = to;
+          return split.join(' ');
+        }
+        return ''; // for deletions
+      }
+
+      // skip constraint name
+      const idx = /constraint/i.test(split[0]) ? 2 : 0;
+
+      // primary key and unique constraints have one or more
+      // columns from this table listed between (); replace
+      // one if it matches
+      if (/primary|unique/i.test(split[idx])) {
+        const ret = item.replace(/\(.*\)/, replaceFromIdentifier);
+        // If any member columns are dropped then uniqueness/pk constraint
+        // can not be retained
+        if (ret !== item && isEmpty(to)) return '';
+        return ret;
+      }
+
+      // foreign keys have one or more columns from this table
+      // listed between (); replace one if it matches
+      // foreign keys also have a 'references' clause
+      // which may reference THIS table; if it does, replace
+      // column references in that too!
+      if (/foreign/.test(split[idx])) {
+        split = item.split(/ references /i);
+        // the quoted column names save us from having to do anything
+        // other than a straight replace here
+        const replacedKeySpec = replaceFromIdentifier(split[0]);
+
+        if (split[0] !== replacedKeySpec) {
+          // If we are removing one or more columns of a foreign
+          // key, then we should not retain the key at all
+          if (isEmpty(to)) return '';
+          else split[0] = replacedKeySpec;
+        }
+
+        if (split[1].slice(0, tableName.length) === tableName) {
+          // self-referential foreign key
+          const replacedKeyTargetSpec = split[1].replace(
+            /\(.*\)/,
+            replaceFromIdentifier
+          );
+          if (split[1] !== replacedKeyTargetSpec) {
+            // If we are removing one or more columns of a foreign
+            // key, then we should not retain the key at all
+            if (isEmpty(to)) return '';
+            else split[1] = replacedKeyTargetSpec;
+          }
+        }
+        return split.join(' references ');
+      }
+
+      return item;
+    });
+
+    args = args.filter(negate(isEmpty));
+
+    if (args.length === 0) {
+      throw new Error('Unable to drop last column from table');
+    }
+
+    return oneLineSql
+      .replace(/\(.*\)/, () => `(${args.join(', ')})`)
+      .replace(/,\s*([,)])/, '$1');
+  },
+
+  // Boy, this is quite a method.
+  renameColumn: async function(from, to) {
+    return this.client.transaction(
+      async (trx) => {
+        this.trx = trx;
+        const column = await this.getColumn(from);
+        const sql = await this.getTableSql(column);
+        const a = this.client.wrapIdentifier(from);
+        const b = this.client.wrapIdentifier(to);
+        const createTable = sql[0];
+        const newSql = this._doReplace(createTable.sql, a, b);
+        if (sql === newSql) {
+          throw new Error('Unable to find the column to change');
+        }
+
+        const { from: mappedFrom, to: mappedTo } = invert(
+          this.client.postProcessResponse(
+            invert({
+              from,
+              to,
+            })
+          )
+        );
+
+        return this.reinsertMapped(createTable, newSql, (row) => {
+          row[mappedTo] = row[mappedFrom];
+          return omit(row, mappedFrom);
+        });
+      },
+      { connection: this.connection }
+    );
+  },
+
+  dropColumn: async function(columns) {
+    return this.client.transaction(
+      (trx) => {
+        this.trx = trx;
+        return Promise.all(columns.map((column) => this.getColumn(column)))
+          .then(() => this.getTableSql())
+          .then((sql) => {
+            const createTable = sql[0];
+            let newSql = createTable.sql;
+            columns.forEach((column) => {
+              const a = this.client.wrapIdentifier(column);
+              newSql = this._doReplace(newSql, a, '');
+            });
+            if (sql === newSql) {
+              throw new Error('Unable to find the column to change');
+            }
+            const mappedColumns = Object.keys(
+              this.client.postProcessResponse(
+                fromPairs(columns.map((column) => [column, column]))
+              )
+            );
+            return this.reinsertMapped(createTable, newSql, (row) =>
+              omit(row, ...mappedColumns)
+            );
+          });
+      },
+      { connection: this.connection }
+    );
+  },
+
+  reinsertMapped(createTable, newSql, mapRow) {
+    return Promise.resolve()
+      .then(() => this.createTempTable(createTable))
+      .then(() => this.copyData())
+      .then(() => this.dropOriginal())
+      .then(() => this.trx.raw(newSql))
+      .then(() => this.reinsertData(mapRow))
+      .then(() => this.dropTempTable());
+  },
+});
+
+module.exports = SQLite3_DDL;

node_modules/knex/lib/dialects/sqlite3/schema/tablecompiler.js

@@ -0,0 +1,156 @@
+const inherits = require('inherits');
+const TableCompiler = require('../../../schema/tablecompiler');
+
+const { filter, values } = require('lodash');
+
+// Table Compiler
+// -------
+
+function TableCompiler_SQLite3() {
+  TableCompiler.apply(this, arguments);
+  this.primaryKey = void 0;
+}
+inherits(TableCompiler_SQLite3, TableCompiler);
+
+// Create a new table.
+TableCompiler_SQLite3.prototype.createQuery = function(columns, ifNot) {
+  const createStatement = ifNot
+    ? 'create table if not exists '
+    : 'create table ';
+  let sql = createStatement + this.tableName() + ' (' + columns.sql.join(', ');
+
+  // SQLite forces primary keys to be added when the table is initially created
+  // so we will need to check for a primary key commands and add the columns
+  // to the table's declaration here so they can be created on the tables.
+  sql += this.foreignKeys() || '';
+  sql += this.primaryKeys() || '';
+  sql += ')';
+
+  this.pushQuery(sql);
+};
+
+TableCompiler_SQLite3.prototype.addColumns = function(columns, prefix) {
+  if (prefix) {
+    throw new Error('Sqlite does not support alter column.');
+  }
+  for (let i = 0, l = columns.sql.length; i < l; i++) {
+    this.pushQuery({
+      sql: `alter table ${this.tableName()} add column ${columns.sql[i]}`,
+      bindings: columns.bindings[i],
+    });
+  }
+};
+
+// Compile a drop unique key command.
+TableCompiler_SQLite3.prototype.dropUnique = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('unique', this.tableNameRaw, columns);
+  this.pushQuery(`drop index ${indexName}`);
+};
+
+TableCompiler_SQLite3.prototype.dropIndex = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('index', this.tableNameRaw, columns);
+  this.pushQuery(`drop index ${indexName}`);
+};
+
+// Compile a unique key command.
+TableCompiler_SQLite3.prototype.unique = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('unique', this.tableNameRaw, columns);
+  columns = this.formatter.columnize(columns);
+  this.pushQuery(
+    `create unique index ${indexName} on ${this.tableName()} (${columns})`
+  );
+};
+
+// Compile a plain index key command.
+TableCompiler_SQLite3.prototype.index = function(columns, indexName) {
+  indexName = indexName
+    ? this.formatter.wrap(indexName)
+    : this._indexCommand('index', this.tableNameRaw, columns);
+  columns = this.formatter.columnize(columns);
+  this.pushQuery(
+    `create index ${indexName} on ${this.tableName()} (${columns})`
+  );
+};
+
+TableCompiler_SQLite3.prototype.primary = TableCompiler_SQLite3.prototype.foreign = function() {
+  if (this.method !== 'create' && this.method !== 'createIfNot') {
+    this.client.logger.warn(
+      'SQLite3 Foreign & Primary keys may only be added on create'
+    );
+  }
+};
+
+TableCompiler_SQLite3.prototype.primaryKeys = function() {
+  const pks = filter(this.grouped.alterTable || [], { method: 'primary' });
+  if (pks.length > 0 && pks[0].args.length > 0) {
+    const columns = pks[0].args[0];
+    let constraintName = pks[0].args[1] || '';
+    if (constraintName) {
+      constraintName = ' constraint ' + this.formatter.wrap(constraintName);
+    }
+    return `,${constraintName} primary key (${this.formatter.columnize(
+      columns
+    )})`;
+  }
+};
+
+TableCompiler_SQLite3.prototype.foreignKeys = function() {
+  let sql = '';
+  const foreignKeys = filter(this.grouped.alterTable || [], {
+    method: 'foreign',
+  });
+  for (let i = 0, l = foreignKeys.length; i < l; i++) {
+    const foreign = foreignKeys[i].args[0];
+    const column = this.formatter.columnize(foreign.column);
+    const references = this.formatter.columnize(foreign.references);
+    const foreignTable = this.formatter.wrap(foreign.inTable);
+    let constraintName = foreign.keyName || '';
+    if (constraintName) {
+      constraintName = ' constraint ' + this.formatter.wrap(constraintName);
+    }
+    sql += `,${constraintName} foreign key(${column}) references ${foreignTable}(${references})`;
+    if (foreign.onDelete) sql += ` on delete ${foreign.onDelete}`;
+    if (foreign.onUpdate) sql += ` on update ${foreign.onUpdate}`;
+  }
+  return sql;
+};
+
+TableCompiler_SQLite3.prototype.createTableBlock = function() {
+  return this.getColumns()
+    .concat()
+    .join(',');
+};
+
+// Compile a rename column command... very complex in sqlite
+TableCompiler_SQLite3.prototype.renameColumn = function(from, to) {
+  const compiler = this;
+  this.pushQuery({
+    sql: `PRAGMA table_info(${this.tableName()})`,
+    output(pragma) {
+      return compiler.client
+        .ddl(compiler, pragma, this.connection)
+        .renameColumn(from, to);
+    },
+  });
+};
+
+TableCompiler_SQLite3.prototype.dropColumn = function() {
+  const compiler = this;
+  const columns = values(arguments);
+  this.pushQuery({
+    sql: `PRAGMA table_info(${this.tableName()})`,
+    output(pragma) {
+      return compiler.client
+        .ddl(compiler, pragma, this.connection)
+        .dropColumn(columns);
+    },
+  });
+};
+
+module.exports = TableCompiler_SQLite3;

node_modules/knex/lib/formatter.js

@@ -0,0 +1,295 @@
+const QueryBuilder = require('./query/builder');
+const Raw = require('./raw');
+const { transform } = require('lodash');
+
+// Valid values for the `order by` clause generation.
+const orderBys = ['asc', 'desc'];
+
+// Turn this into a lookup map
+const operators = transform(
+  [
+    '=',
+    '<',
+    '>',
+    '<=',
+    '>=',
+    '<>',
+    '!=',
+    'like',
+    'not like',
+    'between',
+    'not between',
+    'ilike',
+    'not ilike',
+    'exists',
+    'not exist',
+    'rlike',
+    'not rlike',
+    'regexp',
+    'not regexp',
+    '&',
+    '|',
+    '^',
+    '<<',
+    '>>',
+    '~',
+    '~*',
+    '!~',
+    '!~*',
+    '#',
+    '&&',
+    '@>',
+    '<@',
+    '||',
+    '&<',
+    '&>',
+    '-|-',
+    '@@',
+    '!!',
+    ['?', '\\?'],
+    ['?|', '\\?|'],
+    ['?&', '\\?&'],
+  ],
+  (result, key) => {
+    if (Array.isArray(key)) {
+      result[key[0]] = key[1];
+    } else {
+      result[key] = key;
+    }
+  },
+  {}
+);
+
+class Formatter {
+  constructor(client, builder) {
+    this.client = client;
+    this.builder = builder;
+    this.bindings = [];
+  }
+
+  // Accepts a string or array of columns to wrap as appropriate.
+  columnize(target) {
+    const columns = Array.isArray(target) ? target : [target];
+    let str = '',
+      i = -1;
+    while (++i < columns.length) {
+      if (i > 0) str += ', ';
+      str += this.wrap(columns[i]);
+    }
+    return str;
+  }
+
+  // Turns a list of values into a list of ?'s, joining them with commas unless
+  // a "joining" value is specified (e.g. ' and ')
+  parameterize(values, notSetValue) {
+    if (typeof values === 'function') return this.parameter(values);
+    values = Array.isArray(values) ? values : [values];
+    let str = '',
+      i = -1;
+    while (++i < values.length) {
+      if (i > 0) str += ', ';
+      str += this.parameter(values[i] === undefined ? notSetValue : values[i]);
+    }
+    return str;
+  }
+
+  // Formats `values` into a parenthesized list of parameters for a `VALUES`
+  // clause.
+  //
+  // [1, 2]                  -> '(?, ?)'
+  // [[1, 2], [3, 4]]        -> '((?, ?), (?, ?))'
+  // knex('table')           -> '(select * from "table")'
+  // knex.raw('select ?', 1) -> '(select ?)'
+  //
+  values(values) {
+    if (Array.isArray(values)) {
+      if (Array.isArray(values[0])) {
+        return `(${values
+          .map((value) => `(${this.parameterize(value)})`)
+          .join(', ')})`;
+      }
+      return `(${this.parameterize(values)})`;
+    }
+
+    if (values instanceof Raw) {
+      return `(${this.parameter(values)})`;
+    }
+
+    return this.parameter(values);
+  }
+
+  // Checks whether a value is a function... if it is, we compile it
+  // otherwise we check whether it's a raw
+  parameter(value) {
+    if (typeof value === 'function') {
+      return this.outputQuery(this.compileCallback(value), true);
+    }
+    return this.unwrapRaw(value, true) || '?';
+  }
+
+  unwrapRaw(value, isParameter) {
+    let query;
+    if (value instanceof QueryBuilder) {
+      query = this.client.queryCompiler(value).toSQL();
+      if (query.bindings) {
+        this.bindings = this.bindings.concat(query.bindings);
+      }
+      return this.outputQuery(query, isParameter);
+    }
+    if (value instanceof Raw) {
+      value.client = this.client;
+      if (this.builder._queryContext) {
+        value.queryContext = () => {
+          return this.builder._queryContext;
+        };
+      }
+
+      query = value.toSQL();
+      if (query.bindings) {
+        this.bindings = this.bindings.concat(query.bindings);
+      }
+      return query.sql;
+    }
+    if (isParameter) {
+      this.bindings.push(value);
+    }
+  }
+
+  /**
+   * Creates SQL for a parameter, which might be passed to where() or .with() or
+   * pretty much anywhere in API.
+   *
+   * @param query Callback (for where or complete builder), Raw or QueryBuilder
+   * @param method Optional at least 'select' or 'update' are valid
+   */
+  rawOrFn(value, method) {
+    if (typeof value === 'function') {
+      return this.outputQuery(this.compileCallback(value, method));
+    }
+    return this.unwrapRaw(value) || '';
+  }
+
+  // Puts the appropriate wrapper around a value depending on the database
+  // engine, unless it's a knex.raw value, in which case it's left alone.
+  wrap(value, isParameter) {
+    const raw = this.unwrapRaw(value, isParameter);
+    if (raw) return raw;
+    switch (typeof value) {
+      case 'function':
+        return this.outputQuery(this.compileCallback(value), true);
+      case 'object':
+        return this.parseObject(value);
+      case 'number':
+        return value;
+      default:
+        return this.wrapString(value + '');
+    }
+  }
+
+  wrapAsIdentifier(value) {
+    const queryContext = this.builder.queryContext();
+    return this.client.wrapIdentifier((value || '').trim(), queryContext);
+  }
+
+  alias(first, second) {
+    return first + ' as ' + second;
+  }
+
+  operator(value) {
+    const raw = this.unwrapRaw(value);
+    if (raw) return raw;
+    const operator = operators[(value || '').toLowerCase()];
+    if (!operator) {
+      throw new TypeError(`The operator "${value}" is not permitted`);
+    }
+    return operator;
+  }
+
+  // Specify the direction of the ordering.
+  direction(value) {
+    const raw = this.unwrapRaw(value);
+    if (raw) return raw;
+    return orderBys.indexOf((value || '').toLowerCase()) !== -1 ? value : 'asc';
+  }
+
+  // Compiles a callback using the query builder.
+  compileCallback(callback, method) {
+    const { client } = this;
+
+    // Build the callback
+    const builder = client.queryBuilder();
+    callback.call(builder, builder);
+
+    // Compile the callback, using the current formatter (to track all bindings).
+    const compiler = client.queryCompiler(builder);
+    compiler.formatter = this;
+
+    // Return the compiled & parameterized sql.
+    return compiler.toSQL(method || builder._method || 'select');
+  }
+
+  // Ensures the query is aliased if necessary.
+  outputQuery(compiled, isParameter) {
+    let sql = compiled.sql || '';
+    if (sql) {
+      if (
+        (compiled.method === 'select' || compiled.method === 'first') &&
+        (isParameter || compiled.as)
+      ) {
+        sql = `(${sql})`;
+        if (compiled.as) return this.alias(sql, this.wrap(compiled.as));
+      }
+    }
+    return sql;
+  }
+
+  // Key-value notation for alias
+  parseObject(obj) {
+    const ret = [];
+    for (const alias in obj) {
+      const queryOrIdentifier = obj[alias];
+      // Avoids double aliasing for subqueries
+      if (typeof queryOrIdentifier === 'function') {
+        const compiled = this.compileCallback(queryOrIdentifier);
+        compiled.as = alias; // enforces the object's alias
+        ret.push(this.outputQuery(compiled, true));
+      } else if (queryOrIdentifier instanceof QueryBuilder) {
+        ret.push(
+          this.alias(
+            `(${this.wrap(queryOrIdentifier)})`,
+            this.wrapAsIdentifier(alias)
+          )
+        );
+      } else {
+        ret.push(
+          this.alias(this.wrap(queryOrIdentifier), this.wrapAsIdentifier(alias))
+        );
+      }
+    }
+    return ret.join(', ');
+  }
+
+  // Coerce to string to prevent strange errors when it's not a string.
+  wrapString(value) {
+    const asIndex = value.toLowerCase().indexOf(' as ');
+    if (asIndex !== -1) {
+      const first = value.slice(0, asIndex);
+      const second = value.slice(asIndex + 4);
+      return this.alias(this.wrap(first), this.wrapAsIdentifier(second));
+    }
+    const wrapped = [];
+    let i = -1;
+    const segments = value.split('.');
+    while (++i < segments.length) {
+      value = segments[i];
+      if (i === 0 && segments.length > 1) {
+        wrapped.push(this.wrap((value || '').trim()));
+      } else {
+        wrapped.push(this.wrapAsIdentifier(value));
+      }
+    }
+    return wrapped.join('.');
+  }
+}
+
+module.exports = Formatter;

node_modules/knex/lib/functionhelper.js

@@ -0,0 +1,14 @@
+// FunctionHelper
+// -------
+function FunctionHelper(client) {
+  this.client = client;
+}
+
+FunctionHelper.prototype.now = function(precision) {
+  if (typeof precision === 'number') {
+    return this.client.raw(`CURRENT_TIMESTAMP(${precision})`);
+  }
+  return this.client.raw('CURRENT_TIMESTAMP');
+};
+
+module.exports = FunctionHelper;

node_modules/knex/lib/helpers.js

@@ -0,0 +1,98 @@
+/* eslint no-console:0 */
+
+const {
+  isFunction,
+  isUndefined,
+  isPlainObject,
+  isArray,
+  isTypedArray,
+} = require('lodash');
+const { CLIENT_ALIASES } = require('./constants');
+
+// Check if the first argument is an array, otherwise uses all arguments as an
+// array.
+
+function normalizeArr() {
+  const args = new Array(arguments.length);
+  for (let i = 0; i < args.length; i++) {
+    args[i] = arguments[i];
+  }
+  if (Array.isArray(args[0])) {
+    return args[0];
+  }
+  return args;
+}
+
+function containsUndefined(mixed) {
+  let argContainsUndefined = false;
+
+  if (isTypedArray(mixed)) return false;
+
+  if (mixed && isFunction(mixed.toSQL)) {
+    //Any QueryBuilder or Raw will automatically be validated during compile.
+    return argContainsUndefined;
+  }
+
+  if (isArray(mixed)) {
+    for (let i = 0; i < mixed.length; i++) {
+      if (argContainsUndefined) break;
+      argContainsUndefined = containsUndefined(mixed[i]);
+    }
+  } else if (isPlainObject(mixed)) {
+    Object.keys(mixed).forEach((key) => {
+      if (!argContainsUndefined) {
+        argContainsUndefined = containsUndefined(mixed[key]);
+      }
+    });
+  } else {
+    argContainsUndefined = isUndefined(mixed);
+  }
+
+  return argContainsUndefined;
+}
+
+function getUndefinedIndices(mixed) {
+  const indices = [];
+
+  if (Array.isArray(mixed)) {
+    mixed.forEach((item, index) => {
+      if (containsUndefined(item)) {
+        indices.push(index);
+      }
+    });
+  } else if (isPlainObject(mixed)) {
+    Object.keys(mixed).forEach((key) => {
+      if (containsUndefined(mixed[key])) {
+        indices.push(key);
+      }
+    });
+  } else {
+    indices.push(0);
+  }
+
+  return indices;
+}
+
+function addQueryContext(Target) {
+  // Stores or returns (if called with no arguments) context passed to
+  // wrapIdentifier and postProcessResponse hooks
+  Target.prototype.queryContext = function(context) {
+    if (isUndefined(context)) {
+      return this._queryContext;
+    }
+    this._queryContext = context;
+    return this;
+  };
+}
+
+function resolveClientNameWithAliases(clientName) {
+  return CLIENT_ALIASES[clientName] || clientName;
+}
+
+module.exports = {
+  addQueryContext,
+  containsUndefined,
+  normalizeArr,
+  resolveClientNameWithAliases,
+  getUndefinedIndices,
+};

node_modules/knex/lib/index.js

@@ -0,0 +1,3 @@
+const Knex = require('./knex');
+
+module.exports = Knex;

node_modules/knex/lib/interface.js

@@ -0,0 +1,111 @@
+const { isEmpty, map, clone, each } = require('lodash');
+const Bluebird = require('bluebird');
+
+module.exports = function(Target) {
+  Target.prototype.toQuery = function(tz) {
+    let data = this.toSQL(this._method, tz);
+    if (!Array.isArray(data)) data = [data];
+    return map(data, (statement) => {
+      return this.client._formatQuery(statement.sql, statement.bindings, tz);
+    }).join(';\n');
+  };
+
+  // Create a new instance of the `Runner`, passing in the current object.
+  Target.prototype.then = function(/* onFulfilled, onRejected */) {
+    let result = this.client.runner(this).run();
+
+    if (this.client.config.asyncStackTraces) {
+      result = result.catch((err) => {
+        err.originalStack = err.stack;
+        const firstLine = err.stack.split('\n')[0];
+        this._asyncStack.unshift(firstLine);
+        // put the fake more helpful "async" stack on the thrown error
+        err.stack = this._asyncStack.join('\n');
+        throw err;
+      });
+    }
+
+    return Bluebird.resolve(result.then.apply(result, arguments));
+  };
+
+  // Add additional "options" to the builder. Typically used for client specific
+  // items, like the `mysql` and `sqlite3` drivers.
+  Target.prototype.options = function(opts) {
+    this._options = this._options || [];
+    this._options.push(clone(opts) || {});
+    return this;
+  };
+
+  // Sets an explicit "connection" we wish to use for this query.
+  Target.prototype.connection = function(connection) {
+    this._connection = connection;
+    return this;
+  };
+
+  // Set a debug flag for the current schema query stack.
+  Target.prototype.debug = function(enabled) {
+    this._debug = arguments.length ? enabled : true;
+    return this;
+  };
+
+  // Set the transaction object for this query.
+  Target.prototype.transacting = function(t) {
+    if (t && t.client) {
+      if (!t.client.transacting) {
+        t.client.logger.warn(`Invalid transaction value: ${t.client}`);
+      } else {
+        this.client = t.client;
+      }
+    }
+    if (isEmpty(t)) {
+      this.client.logger.error(
+        'Invalid value on transacting call, potential bug'
+      );
+      throw Error(
+        'Invalid transacting value (null, undefined or empty object)'
+      );
+    }
+    return this;
+  };
+
+  // Initializes a stream.
+  Target.prototype.stream = function(options) {
+    return this.client.runner(this).stream(options);
+  };
+
+  // Initialize a stream & pipe automatically.
+  Target.prototype.pipe = function(writable, options) {
+    return this.client.runner(this).pipe(
+      writable,
+      options
+    );
+  };
+
+  // Creates a method which "coerces" to a promise, by calling a
+  // "then" method on the current `Target`
+  each(
+    [
+      'bind',
+      'catch',
+      'finally',
+      'asCallback',
+      'spread',
+      'map',
+      'reduce',
+      'thenReturn',
+      'return',
+      'yield',
+      'ensure',
+      'reflect',
+      'get',
+      'mapSeries',
+      'delay',
+    ],
+    function(method) {
+      Target.prototype[method] = function() {
+        const promise = this.then();
+        return promise[method].apply(promise, arguments);
+      };
+    }
+  );
+};

node_modules/knex/lib/knex.js

@@ -0,0 +1,79 @@
+const Raw = require('./raw');
+const Client = require('./client');
+const QueryBuilder = require('./query/builder');
+const QueryInterface = require('./query/methods');
+
+const makeKnex = require('./util/make-knex');
+const parseConnection = require('./util/parse-connection');
+const fakeClient = require('./util/fake-client');
+const { SUPPORTED_CLIENTS } = require('./constants');
+const { resolveClientNameWithAliases } = require('./helpers');
+
+function Knex(config) {
+  // If config is a string, try to parse it
+  if (typeof config === 'string') {
+    const parsedConfig = Object.assign(parseConnection(config), arguments[2]);
+    return new Knex(parsedConfig);
+  }
+
+  let Dialect;
+  // If user provided no relevant parameters, use generic client
+  if (arguments.length === 0 || (!config.client && !config.dialect)) {
+    Dialect = Client;
+  }
+
+  // If user provided Client constructor as a parameter, use it
+  else if (
+    typeof config.client === 'function' &&
+    config.client.prototype instanceof Client
+  ) {
+    Dialect = config.client;
+  }
+
+  // If neither applies, let's assume user specified name of a client or dialect as a string
+  else {
+    const clientName = config.client || config.dialect;
+    if (!SUPPORTED_CLIENTS.includes(clientName)) {
+      throw new Error(
+        `knex: Unknown configuration option 'client' value ${clientName}. Note that it is case-sensitive, check documentation for supported values.`
+      );
+    }
+
+    const resolvedClientName = resolveClientNameWithAliases(clientName);
+    Dialect = require(`./dialects/${resolvedClientName}/index.js`);
+  }
+
+  // If config connection parameter is passed as string, try to parse it
+  if (typeof config.connection === 'string') {
+    config = Object.assign({}, config, {
+      connection: parseConnection(config.connection).connection,
+    });
+  }
+  const newKnex = makeKnex(new Dialect(config));
+  if (config.userParams) {
+    newKnex.userParams = config.userParams;
+  }
+  return newKnex;
+}
+
+// Expose Client on the main Knex namespace.
+Knex.Client = Client;
+Knex.QueryBuilder = {
+  extend: function(methodName, fn) {
+    QueryBuilder.extend(methodName, fn);
+    QueryInterface.push(methodName);
+  },
+};
+
+/* eslint no-console:0 */
+
+// Run a "raw" query, though we can't do anything with it other than put
+// it in a query statement.
+Knex.raw = (sql, bindings) => {
+  console.warn(
+    'global Knex.raw is deprecated, use knex.raw (chain off an initialized knex object)'
+  );
+  return new Raw(fakeClient).set(sql, bindings);
+};
+
+module.exports = Knex;

node_modules/knex/lib/logger.js

@@ -0,0 +1,78 @@
+/* eslint no-console:0 */
+
+const color = require('colorette');
+const { inspect } = require('util');
+const { isFunction, isNil, isString } = require('lodash');
+
+class Logger {
+  constructor(config) {
+    const {
+      log: {
+        debug,
+        warn,
+        error,
+        deprecate,
+        inspectionDepth,
+        enableColors,
+      } = {},
+    } = config;
+    this._inspectionDepth = inspectionDepth || 5;
+    this._enableColors = resolveIsEnabledColors(enableColors);
+    this._debug = debug;
+    this._warn = warn;
+    this._error = error;
+    this._deprecate = deprecate;
+  }
+
+  _log(message, userFn, colorFn) {
+    if (!isNil(userFn) && !isFunction(userFn)) {
+      throw new TypeError('Extensions to knex logger must be functions!');
+    }
+
+    if (isFunction(userFn)) {
+      userFn(message);
+      return;
+    }
+
+    if (!isString(message)) {
+      message = inspect(message, {
+        depth: this._inspectionDepth,
+        colors: this._enableColors,
+      });
+    }
+
+    console.log(colorFn ? colorFn(message) : message);
+  }
+
+  debug(message) {
+    this._log(message, this._debug);
+  }
+
+  warn(message) {
+    this._log(message, this._warn, color.yellow);
+  }
+
+  error(message) {
+    this._log(message, this._error, color.red);
+  }
+
+  deprecate(method, alternative) {
+    const message = `${method} is deprecated, please use ${alternative}`;
+
+    this._log(message, this._deprecate, color.yellow);
+  }
+}
+
+function resolveIsEnabledColors(enableColorsParam) {
+  if (!isNil(enableColorsParam)) {
+    return enableColorsParam;
+  }
+
+  if (process && process.stdout) {
+    return process.stdout.isTTY;
+  }
+
+  return false;
+}
+
+module.exports = Logger;

node_modules/knex/lib/migrate/MigrationGenerator.js

@@ -0,0 +1,106 @@
+const fs = require('fs');
+const path = require('path');
+const { promisify } = require('util');
+const mkdirp = require('mkdirp');
+const { writeJsFileUsingTemplate } = require('../util/template');
+const { getMergedConfig } = require('./configuration-merger');
+
+class MigrationGenerator {
+  constructor(migrationConfig) {
+    this.config = getMergedConfig(migrationConfig);
+  }
+
+  // Creates a new migration, with a given name.
+  async make(name, config) {
+    this.config = getMergedConfig(config, this.config);
+    if (!name) {
+      return Promise.reject(
+        new Error('A name must be specified for the generated migration')
+      );
+    }
+    await this._ensureFolder();
+    const createdMigrationFilePath = await this._writeNewMigration(name);
+    return createdMigrationFilePath;
+  }
+
+  // Ensures a folder for the migrations exist, dependent on the migration
+  // config settings.
+  _ensureFolder() {
+    const dirs = this._absoluteConfigDirs();
+
+    const promises = dirs.map((dir) => {
+      return promisify(fs.stat)(dir).catch(() => promisify(mkdirp)(dir));
+    });
+
+    return Promise.all(promises);
+  }
+
+  _getStubPath() {
+    return (
+      this.config.stub ||
+      path.join(__dirname, 'stub', this.config.extension + '.stub')
+    );
+  }
+
+  _getNewMigrationName(name) {
+    if (name[0] === '-') name = name.slice(1);
+    return yyyymmddhhmmss() + '_' + name + '.' + this.config.extension;
+  }
+
+  _getNewMigrationPath(name) {
+    const fileName = this._getNewMigrationName(name);
+    const dirs = this._absoluteConfigDirs();
+    const dir = dirs.slice(-1)[0]; // Get last specified directory
+    return path.join(dir, fileName);
+  }
+
+  // Write a new migration to disk, using the config and generated filename,
+  // passing any `variables` given in the config to the template.
+  async _writeNewMigration(name) {
+    const migrationPath = this._getNewMigrationPath(name);
+    await writeJsFileUsingTemplate(
+      migrationPath,
+      this._getStubPath(),
+      { variable: 'd' },
+      this.config.variables || {}
+    );
+    return migrationPath;
+  }
+
+  _absoluteConfigDirs() {
+    const directories = Array.isArray(this.config.directory)
+      ? this.config.directory
+      : [this.config.directory];
+    return directories.map((directory) => {
+      if (!directory) {
+        // eslint-disable-next-line no-console
+        console.warn(
+          'Failed to resolve config file, knex cannot determine where to generate migrations'
+        );
+      }
+      return path.resolve(process.cwd(), directory);
+    });
+  }
+}
+
+// Ensure that we have 2 places for each of the date segments.
+function padDate(segment) {
+  segment = segment.toString();
+  return segment[1] ? segment : `0${segment}`;
+}
+
+// Get a date object in the correct format, without requiring a full out library
+// like "moment.js".
+function yyyymmddhhmmss() {
+  const d = new Date();
+  return (
+    d.getFullYear().toString() +
+    padDate(d.getMonth() + 1) +
+    padDate(d.getDate()) +
+    padDate(d.getHours()) +
+    padDate(d.getMinutes()) +
+    padDate(d.getSeconds())
+  );
+}
+
+module.exports = MigrationGenerator;

node_modules/knex/lib/migrate/Migrator.js

@@ -0,0 +1,600 @@
+// Migrator
+// -------
+const {
+  differenceWith,
+  each,
+  filter,
+  get,
+  isFunction,
+  isBoolean,
+  isEmpty,
+  isUndefined,
+  max,
+} = require('lodash');
+const inherits = require('inherits');
+const {
+  getLockTableName,
+  getLockTableNameWithSchema,
+  getTable,
+  getTableName,
+} = require('./table-resolver');
+const { getSchemaBuilder } = require('./table-creator');
+const migrationListResolver = require('./migration-list-resolver');
+const MigrationGenerator = require('./MigrationGenerator');
+const { getMergedConfig } = require('./configuration-merger');
+
+function LockError(msg) {
+  this.name = 'MigrationLocked';
+  this.message = msg;
+}
+
+inherits(LockError, Error);
+
+// The new migration we're performing, typically called from the `knex.migrate`
+// interface on the main `knex` object. Passes the `knex` instance performing
+// the migration.
+class Migrator {
+  constructor(knex) {
+    // Clone knex instance and remove post-processing that is unnecessary for internal queries from a cloned config
+    if (isFunction(knex)) {
+      if (!knex.isTransaction) {
+        this.knex = knex.withUserParams({
+          ...knex.userParams,
+        });
+      } else {
+        this.knex = knex;
+      }
+    } else {
+      this.knex = Object.assign({}, knex);
+      this.knex.userParams = this.knex.userParams || {};
+    }
+
+    this.config = getMergedConfig(this.knex.client.config.migrations);
+    this.generator = new MigrationGenerator(this.knex.client.config.migrations);
+    this._activeMigration = {
+      fileName: null,
+    };
+  }
+
+  // Migrators to the latest configuration.
+  latest(config) {
+    this._disableProcessing();
+    this.config = getMergedConfig(config, this.config);
+
+    return migrationListResolver
+      .listAllAndCompleted(this.config, this.knex)
+      .then((value) => {
+        if (!this.config.disableMigrationsListValidation) {
+          validateMigrationList(this.config.migrationSource, value);
+        }
+        return value;
+      })
+      .then(([all, completed]) => {
+        const migrations = getNewMigrations(
+          this.config.migrationSource,
+          all,
+          completed
+        );
+
+        const transactionForAll =
+          !this.config.disableTransactions &&
+          isEmpty(
+            filter(migrations, (migration) => {
+              const migrationContents = this.config.migrationSource.getMigration(
+                migration
+              );
+              return !this._useTransaction(migrationContents);
+            })
+          );
+
+        if (transactionForAll) {
+          return this.knex.transaction((trx) => {
+            return this._runBatch(migrations, 'up', trx);
+          });
+        } else {
+          return this._runBatch(migrations, 'up');
+        }
+      });
+  }
+
+  // Runs the next migration that has not yet been run
+  up(config) {
+    this._disableProcessing();
+    this.config = getMergedConfig(config, this.config);
+
+    return migrationListResolver
+      .listAllAndCompleted(this.config, this.knex)
+      .then((value) => {
+        if (!this.config.disableMigrationsListValidation) {
+          validateMigrationList(this.config.migrationSource, value);
+        }
+        return value;
+      })
+      .then(([all, completed]) => {
+        const newMigrations = getNewMigrations(
+          this.config.migrationSource,
+          all,
+          completed
+        );
+
+        let migrationToRun;
+        const name = this.config.name;
+        if (name) {
+          if (!completed.includes(name)) {
+            migrationToRun = newMigrations.find((migration) => {
+              return (
+                this.config.migrationSource.getMigrationName(migration) === name
+              );
+            });
+            if (!migrationToRun) {
+              throw new Error(`Migration "${name}" not found.`);
+            }
+          }
+        } else {
+          migrationToRun = newMigrations[0];
+        }
+
+        const migrationsToRun = [];
+        if (migrationToRun) {
+          migrationsToRun.push(migrationToRun);
+        }
+
+        const transactionForAll =
+          !this.config.disableTransactions &&
+          isEmpty(
+            filter(migrationsToRun, (migration) => {
+              const migrationContents = this.config.migrationSource.getMigration(
+                migration
+              );
+
+              return !this._useTransaction(migrationContents);
+            })
+          );
+
+        if (transactionForAll) {
+          return this.knex.transaction((trx) => {
+            return this._runBatch(migrationsToRun, 'up', trx);
+          });
+        } else {
+          return this._runBatch(migrationsToRun, 'up');
+        }
+      });
+  }
+
+  // Rollback the last "batch", or all, of migrations that were run.
+  rollback(config, all = false) {
+    this._disableProcessing();
+    return new Promise((resolve, reject) => {
+      try {
+        this.config = getMergedConfig(config, this.config);
+      } catch (e) {
+        reject(e);
+      }
+      migrationListResolver
+        .listAllAndCompleted(this.config, this.knex)
+        .then((value) => {
+          if (!this.config.disableMigrationsListValidation) {
+            validateMigrationList(this.config.migrationSource, value);
+          }
+          return value;
+        })
+        .then((val) => {
+          const [allMigrations, completedMigrations] = val;
+
+          return all
+            ? allMigrations
+                .filter((migration) => {
+                  return completedMigrations.includes(migration.file);
+                })
+                .reverse()
+            : this._getLastBatch(val);
+        })
+        .then((migrations) => {
+          return this._runBatch(migrations, 'down');
+        })
+        .then(resolve, reject);
+    });
+  }
+
+  down(config) {
+    this._disableProcessing();
+    this.config = getMergedConfig(config, this.config);
+
+    return migrationListResolver
+      .listAllAndCompleted(this.config, this.knex)
+      .then((value) => {
+        if (!this.config.disableMigrationsListValidation) {
+          validateMigrationList(this.config.migrationSource, value);
+        }
+        return value;
+      })
+      .then(([all, completed]) => {
+        const completedMigrations = all.filter((migration) => {
+          return completed.includes(
+            this.config.migrationSource.getMigrationName(migration)
+          );
+        });
+
+        let migrationToRun;
+        const name = this.config.name;
+        if (name) {
+          migrationToRun = completedMigrations.find((migration) => {
+            return (
+              this.config.migrationSource.getMigrationName(migration) === name
+            );
+          });
+          if (!migrationToRun) {
+            throw new Error(`Migration "${name}" was not run.`);
+          }
+        } else {
+          migrationToRun = completedMigrations[completedMigrations.length - 1];
+        }
+
+        const migrationsToRun = [];
+        if (migrationToRun) {
+          migrationsToRun.push(migrationToRun);
+        }
+
+        return this._runBatch(migrationsToRun, 'down');
+      });
+  }
+
+  status(config) {
+    this._disableProcessing();
+    this.config = getMergedConfig(config, this.config);
+
+    return Promise.all([
+      getTable(this.knex, this.config.tableName, this.config.schemaName).select(
+        '*'
+      ),
+      migrationListResolver.listAll(this.config.migrationSource),
+    ]).then(([db, code]) => db.length - code.length);
+  }
+
+  // Retrieves and returns the current migration version we're on, as a promise.
+  // If no migrations have been run yet, return "none".
+  currentVersion(config) {
+    this._disableProcessing();
+    this.config = getMergedConfig(config, this.config);
+
+    return migrationListResolver
+      .listCompleted(this.config.tableName, this.config.schemaName, this.knex)
+      .then((completed) => {
+        const val = max(completed.map((value) => value.split('_')[0]));
+        return isUndefined(val) ? 'none' : val;
+      });
+  }
+
+  // list all migrations
+  async list(config) {
+    this._disableProcessing();
+    this.config = getMergedConfig(config, this.config);
+
+    const [all, completed] = await migrationListResolver.listAllAndCompleted(
+      this.config,
+      this.knex
+    );
+
+    if (!this.config.disableMigrationsListValidation) {
+      validateMigrationList(this.config.migrationSource, [all, completed]);
+    }
+
+    const newMigrations = getNewMigrations(
+      this.config.migrationSource,
+      all,
+      completed
+    );
+    return [completed, newMigrations];
+  }
+
+  forceFreeMigrationsLock(config) {
+    this.config = getMergedConfig(config, this.config);
+
+    const lockTable = getLockTableName(this.config.tableName);
+    return getSchemaBuilder(this.knex, this.config.schemaName)
+      .hasTable(lockTable)
+      .then((exist) => exist && this._freeLock());
+  }
+
+  // Creates a new migration, with a given name.
+  make(name, config) {
+    this.config = getMergedConfig(config, this.config);
+    return this.generator.make(name, this.config);
+  }
+
+  _disableProcessing() {
+    if (this.knex.disableProcessing) {
+      this.knex.disableProcessing();
+    }
+  }
+
+  _lockMigrations(trx) {
+    const tableName = getLockTableName(this.config.tableName);
+    return getTable(this.knex, tableName, this.config.schemaName)
+      .transacting(trx)
+      .where('is_locked', '=', 0)
+      .update({ is_locked: 1 })
+      .then((rowCount) => {
+        if (rowCount != 1) {
+          throw new Error('Migration table is already locked');
+        }
+      });
+  }
+
+  _getLock(trx) {
+    const transact = trx ? (fn) => fn(trx) : (fn) => this.knex.transaction(fn);
+    return transact((trx) => {
+      return this._lockMigrations(trx);
+    }).catch((err) => {
+      throw new LockError(err.message);
+    });
+  }
+
+  _freeLock(trx = this.knex) {
+    const tableName = getLockTableName(this.config.tableName);
+    return getTable(trx, tableName, this.config.schemaName).update({
+      is_locked: 0,
+    });
+  }
+
+  // Run a batch of current migrations, in sequence.
+  _runBatch(migrations, direction, trx) {
+    return (
+      this._getLock(trx)
+        // When there is a wrapping transaction, some migrations
+        // could have been done while waiting for the lock:
+        .then(() =>
+          trx
+            ? migrationListResolver.listCompleted(
+                this.config.tableName,
+                this.config.schemaName,
+                trx
+              )
+            : []
+        )
+        .then(
+          (completed) =>
+            (migrations = getNewMigrations(
+              this.config.migrationSource,
+              migrations,
+              completed
+            ))
+        )
+        .then(() =>
+          Promise.all(
+            migrations.map(this._validateMigrationStructure.bind(this))
+          )
+        )
+        .then(() => this._latestBatchNumber(trx))
+        .then((batchNo) => {
+          if (direction === 'up') batchNo++;
+          return batchNo;
+        })
+        .then((batchNo) => {
+          return this._waterfallBatch(batchNo, migrations, direction, trx);
+        })
+        .then(async (res) => {
+          await this._freeLock(trx);
+          return res;
+        })
+        .catch(async (error) => {
+          let cleanupReady = Promise.resolve();
+
+          if (error instanceof LockError) {
+            // If locking error do not free the lock.
+            this.knex.client.logger.warn(
+              `Can't take lock to run migrations: ${error.message}`
+            );
+            this.knex.client.logger.warn(
+              'If you are sure migrations are not running you can release the ' +
+                'lock manually by deleting all the rows = require(migrations lock ' +
+                'table: ' +
+                getLockTableNameWithSchema(
+                  this.config.tableName,
+                  this.config.schemaName
+                )
+            );
+          } else {
+            if (this._activeMigration.fileName) {
+              this.knex.client.logger.warn(
+                `migration file "${this._activeMigration.fileName}" failed`
+              );
+            }
+            this.knex.client.logger.warn(
+              `migration failed with error: ${error.message}`
+            );
+            // If the error was not due to a locking issue, then remove the lock.
+            cleanupReady = this._freeLock(trx);
+          }
+
+          try {
+            await cleanupReady;
+            // eslint-disable-next-line no-empty
+          } catch (e) {}
+          throw error;
+        })
+    );
+  }
+
+  // Validates some migrations by requiring and checking for an `up` and `down`
+  // function.
+  _validateMigrationStructure(migration) {
+    const migrationName = this.config.migrationSource.getMigrationName(
+      migration
+    );
+    const migrationContent = this.config.migrationSource.getMigration(
+      migration
+    );
+    if (
+      typeof migrationContent.up !== 'function' ||
+      typeof migrationContent.down !== 'function'
+    ) {
+      throw new Error(
+        `Invalid migration: ${migrationName} must have both an up and down function`
+      );
+    }
+
+    return migration;
+  }
+
+  // Get the last batch of migrations, by name, ordered by insert id in reverse
+  // order.
+  _getLastBatch([allMigrations]) {
+    const { tableName, schemaName } = this.config;
+    return getTable(this.knex, tableName, schemaName)
+      .where('batch', function(qb) {
+        qb.max('batch').from(getTableName(tableName, schemaName));
+      })
+      .orderBy('id', 'desc')
+      .then((migrations) =>
+        Promise.all(
+          migrations.map((migration) => {
+            return allMigrations.find((entry) => {
+              return (
+                this.config.migrationSource.getMigrationName(entry) ===
+                migration.name
+              );
+            });
+          })
+        )
+      );
+  }
+
+  // Returns the latest batch number.
+  _latestBatchNumber(trx = this.knex) {
+    return trx
+      .from(getTableName(this.config.tableName, this.config.schemaName))
+      .max('batch as max_batch')
+      .then((obj) => obj[0].max_batch || 0);
+  }
+
+  // If transaction config for a single migration is defined, use that.
+  // Otherwise, rely on the common config. This allows enabling/disabling
+  // transaction for a single migration at will, regardless of the common
+  // config.
+  _useTransaction(migrationContent, allTransactionsDisabled) {
+    const singleTransactionValue = get(migrationContent, 'config.transaction');
+
+    return isBoolean(singleTransactionValue)
+      ? singleTransactionValue
+      : !allTransactionsDisabled;
+  }
+
+  // Runs a batch of `migrations` in a specified `direction`, saving the
+  // appropriate database information as the migrations are run.
+  _waterfallBatch(batchNo, migrations, direction, trx) {
+    const trxOrKnex = trx || this.knex;
+    const { tableName, schemaName, disableTransactions } = this.config;
+    let current = Promise.resolve();
+    const log = [];
+    each(migrations, (migration) => {
+      const name = this.config.migrationSource.getMigrationName(migration);
+      this._activeMigration.fileName = name;
+      const migrationContent = this.config.migrationSource.getMigration(
+        migration
+      );
+
+      // We're going to run each of the migrations in the current "up".
+      current = current
+        .then(() => {
+          this._activeMigration.fileName = name;
+          if (
+            !trx &&
+            this._useTransaction(migrationContent, disableTransactions)
+          ) {
+            this.knex.enableProcessing();
+            return this._transaction(
+              this.knex,
+              migrationContent,
+              direction,
+              name
+            );
+          }
+
+          trxOrKnex.enableProcessing();
+          return checkPromise(
+            this.knex.client.logger,
+            migrationContent[direction](trxOrKnex),
+            name
+          );
+        })
+        .then(() => {
+          trxOrKnex.disableProcessing();
+          this.knex.disableProcessing();
+          log.push(name);
+          if (direction === 'up') {
+            return trxOrKnex.into(getTableName(tableName, schemaName)).insert({
+              name,
+              batch: batchNo,
+              migration_time: new Date(),
+            });
+          }
+          if (direction === 'down') {
+            return trxOrKnex
+              .from(getTableName(tableName, schemaName))
+              .where({ name })
+              .del();
+          }
+        });
+    });
+
+    return current.then(() => [batchNo, log]);
+  }
+
+  _transaction(knex, migrationContent, direction, name) {
+    return knex.transaction((trx) => {
+      return checkPromise(
+        knex.client.logger,
+        migrationContent[direction](trx),
+        name,
+        () => {
+          trx.commit();
+        }
+      );
+    });
+  }
+}
+
+// Validates that migrations are present in the appropriate directories.
+function validateMigrationList(migrationSource, migrations) {
+  const all = migrations[0];
+  const completed = migrations[1];
+  const diff = getMissingMigrations(migrationSource, completed, all);
+  if (!isEmpty(diff)) {
+    throw new Error(
+      `The migration directory is corrupt, the following files are missing: ${diff.join(
+        ', '
+      )}`
+    );
+  }
+}
+
+function getMissingMigrations(migrationSource, completed, all) {
+  return differenceWith(completed, all, (completedMigration, allMigration) => {
+    return (
+      completedMigration === migrationSource.getMigrationName(allMigration)
+    );
+  });
+}
+
+function getNewMigrations(migrationSource, all, completed) {
+  return differenceWith(all, completed, (allMigration, completedMigration) => {
+    return (
+      completedMigration === migrationSource.getMigrationName(allMigration)
+    );
+  });
+}
+
+function checkPromise(logger, migrationPromise, name, commitFn) {
+  if (!migrationPromise || typeof migrationPromise.then !== 'function') {
+    logger.warn(`migration ${name} did not return a promise`);
+    if (commitFn) {
+      commitFn();
+    }
+  }
+  return migrationPromise;
+}
+
+module.exports = {
+  Migrator,
+};

node_modules/knex/lib/migrate/configuration-merger.js

@@ -0,0 +1,53 @@
+const {
+  FsMigrations,
+  DEFAULT_LOAD_EXTENSIONS,
+} = require('./sources/fs-migrations');
+
+const CONFIG_DEFAULT = Object.freeze({
+  extension: 'js',
+  loadExtensions: DEFAULT_LOAD_EXTENSIONS,
+  tableName: 'knex_migrations',
+  schemaName: null,
+  directory: './migrations',
+  disableTransactions: false,
+  disableMigrationsListValidation: false,
+  sortDirsSeparately: false,
+});
+
+function getMergedConfig(config, currentConfig) {
+  // config is the user specified config, mergedConfig has defaults and current config
+  // applied to it.
+  const mergedConfig = Object.assign(
+    {},
+    CONFIG_DEFAULT,
+    currentConfig || {},
+    config
+  );
+
+  if (
+    config &&
+    // If user specifies any FS related config,
+    // clear existing FsMigrations migrationSource
+    (config.directory ||
+      config.sortDirsSeparately !== undefined ||
+      config.loadExtensions)
+  ) {
+    mergedConfig.migrationSource = null;
+  }
+
+  // If the user has not specified any configs, we need to
+  // default to fs migrations to maintain compatibility
+  if (!mergedConfig.migrationSource) {
+    mergedConfig.migrationSource = new FsMigrations(
+      mergedConfig.directory,
+      mergedConfig.sortDirsSeparately,
+      mergedConfig.loadExtensions
+    );
+  }
+
+  return mergedConfig;
+}
+
+module.exports = {
+  getMergedConfig,
+};

node_modules/knex/lib/migrate/migrate-stub.js

@@ -0,0 +1,17 @@
+// Stub Migrate:
+// Used for now in browser builds, where filesystem access isn't
+// available.
+const StubMigrate = (module.exports = function() {});
+
+const noSuchMethod = async function() {
+  throw new Error('Migrations are not supported');
+};
+
+StubMigrate.prototype = {
+  make: noSuchMethod,
+  latest: noSuchMethod,
+  rollback: noSuchMethod,
+  currentVersion: noSuchMethod,
+  up: noSuchMethod,
+  down: noSuchMethod,
+};

node_modules/knex/lib/migrate/migration-list-resolver.js

@@ -0,0 +1,40 @@
+const Bluebird = require('bluebird');
+const { getTableName } = require('./table-resolver');
+const { ensureTable } = require('./table-creator');
+
+// Lists all available migration versions, as a sorted array.
+function listAll(migrationSource, loadExtensions) {
+  return migrationSource.getMigrations(loadExtensions);
+}
+
+// Lists all migrations that have been completed for the current db, as an
+// array.
+function listCompleted(tableName, schemaName, trxOrKnex) {
+  return ensureTable(tableName, schemaName, trxOrKnex)
+    .then(() =>
+      trxOrKnex
+        .from(getTableName(tableName, schemaName))
+        .orderBy('id')
+        .select('name')
+    )
+    .then((migrations) =>
+      migrations.map((migration) => {
+        return migration.name;
+      })
+    );
+}
+
+// Gets the migration list from the migration directory specified in config, as well as
+// the list of completed migrations to check what should be run.
+function listAllAndCompleted(config, trxOrKnex) {
+  return Bluebird.all([
+    listAll(config.migrationSource, config.loadExtensions),
+    listCompleted(config.tableName, config.schemaName, trxOrKnex),
+  ]);
+}
+
+module.exports = {
+  listAll,
+  listAllAndCompleted,
+  listCompleted,
+};

node_modules/knex/lib/migrate/sources/fs-migrations.js

@@ -0,0 +1,98 @@
+const fs = require('fs');
+const path = require('path');
+const { promisify } = require('util');
+const { sortBy, filter } = require('lodash');
+
+const readDirAsync = promisify(fs.readdir);
+
+const DEFAULT_LOAD_EXTENSIONS = Object.freeze([
+  '.co',
+  '.coffee',
+  '.eg',
+  '.iced',
+  '.js',
+  '.litcoffee',
+  '.ls',
+  '.ts',
+]);
+
+class FsMigrations {
+  constructor(migrationDirectories, sortDirsSeparately, loadExtensions) {
+    this.sortDirsSeparately = sortDirsSeparately;
+
+    if (!Array.isArray(migrationDirectories)) {
+      migrationDirectories = [migrationDirectories];
+    }
+    this.migrationsPaths = migrationDirectories;
+    this.loadExtensions = loadExtensions || DEFAULT_LOAD_EXTENSIONS;
+  }
+
+  /**
+   * Gets the migration names
+   * @returns Promise<string[]>
+   */
+  getMigrations(loadExtensions) {
+    // Get a list of files in all specified migration directories
+    const readMigrationsPromises = this.migrationsPaths.map((configDir) => {
+      const absoluteDir = path.resolve(process.cwd(), configDir);
+      return readDirAsync(absoluteDir).then((files) => ({
+        files,
+        configDir,
+        absoluteDir,
+      }));
+    });
+
+    return Promise.all(readMigrationsPromises).then((allMigrations) => {
+      const migrations = allMigrations.reduce((acc, migrationDirectory) => {
+        // When true, files inside the folder should be sorted
+        if (this.sortDirsSeparately) {
+          migrationDirectory.files = migrationDirectory.files.sort();
+        }
+
+        migrationDirectory.files.forEach((file) =>
+          acc.push({ file, directory: migrationDirectory.configDir })
+        );
+
+        return acc;
+      }, []);
+
+      // If true we have already sorted the migrations inside the folders
+      // return the migrations fully qualified
+      if (this.sortDirsSeparately) {
+        return filterMigrations(
+          this,
+          migrations,
+          loadExtensions || this.loadExtensions
+        );
+      }
+
+      return filterMigrations(
+        this,
+        sortBy(migrations, 'file'),
+        loadExtensions || this.loadExtensions
+      );
+    });
+  }
+
+  getMigrationName(migration) {
+    return migration.file;
+  }
+
+  getMigration(migration) {
+    const absoluteDir = path.resolve(process.cwd(), migration.directory);
+    return require(path.join(absoluteDir, migration.file));
+  }
+}
+
+function filterMigrations(migrationSource, migrations, loadExtensions) {
+  return filter(migrations, (migration) => {
+    const migrationName = migrationSource.getMigrationName(migration);
+    const extension = path.extname(migrationName);
+    return loadExtensions.includes(extension);
+  });
+}
+
+module.exports = {
+  DEFAULT_LOAD_EXTENSIONS,
+  FsMigrations,
+};

node_modules/knex/lib/migrate/stub/coffee.stub

@@ -0,0 +1,13 @@
+
+exports.up = (knex) ->
+  <% if (d.tableName) { %>
+  knex.schema.createTable "<%= d.tableName %>", (t) ->
+    t.increments()
+    t.timestamp()
+  <% } %>
+
+
+exports.down = (knex) ->
+  <% if (d.tableName) { %>
+  knex.schema.dropTable "<%= d.tableName %>"
+  <% } %>

node_modules/knex/lib/migrate/stub/eg.stub

@@ -0,0 +1,14 @@
+provide: up, down
+
+up = (knex) ->
+  <% if (d.tableName) { %>
+  knex.schema.createTable "<%= d.tableName %>": t ->
+    t.increments()
+    t.timestamp()
+  <% } %>
+
+
+down = (knex) ->
+  <% if (d.tableName) { %>
+  knex.schema.dropTable("<%= d.tableName %>")
+  <% } %>

node_modules/knex/lib/migrate/stub/js.stub

@@ -0,0 +1,15 @@
+
+exports.up = function(knex) {
+  <% if (d.tableName) { %>
+  return knex.schema.createTable("<%= d.tableName %>", function(t) {
+    t.increments();
+    t.timestamp();
+  });
+  <% } %>
+};
+
+exports.down = function(knex) {
+  <% if (d.tableName) { %>
+  return knex.schema.dropTable("<%= d.tableName %>");
+  <% } %>
+};

node_modules/knex/lib/migrate/stub/knexfile-coffee.stub

@@ -0,0 +1,34 @@
+# Update with your config settings.
+
+module.exports =
+
+  development:
+    client: 'sqlite3'
+    connection:
+      filename: './dev.sqlite3'
+    migrations:
+      tableName: 'knex_migrations'
+
+  staging:
+    client: 'postgresql'
+    connection:
+      database: 'my_db'
+      user:     'username'
+      password: 'password'
+    pool:
+      min: 2
+      max: 10
+    migrations:
+      tableName: 'knex_migrations'
+
+  production:
+    client: 'postgresql'
+    connection:
+      database: 'my_db'
+      user:     'username'
+      password: 'password'
+    pool:
+      min: 2
+      max: 10
+    migrations:
+      tableName: 'knex_migrations'

node_modules/knex/lib/migrate/stub/knexfile-eg.stub

@@ -0,0 +1,43 @@
+;; Update with your config settings.
+
+module.exports = {
+   development = {
+      client = 'sqlite3'
+      connection = {
+         filename = './dev.sqlite3'
+      }
+      migrations = {
+         tableName = 'knex_migrations'
+      }
+   }
+   staging = {
+      client = 'postgresql'
+      connection = {
+         database = 'my_db'
+         user     = 'username'
+         password = 'password'
+      }
+      pool = {
+         min = 2
+         max = 10
+      }
+      migrations = {
+         tableName = 'knex_migrations'
+      }
+   }
+   production = {
+      client = 'postgresql'
+      connection = {
+         database = 'my_db'
+         user     = 'username'
+         password = 'password'
+      }
+      pool = {
+         min = 2
+         max = 10
+      }
+      migrations = {
+         tableName = 'knex_migrations'
+      }
+   }
+}

node_modules/knex/lib/migrate/stub/knexfile-js.stub

@@ -0,0 +1,44 @@
+// Update with your config settings.
+
+module.exports = {
+
+  development: {
+    client: 'sqlite3',
+    connection: {
+      filename: './dev.sqlite3'
+    }
+  },
+
+  staging: {
+    client: 'postgresql',
+    connection: {
+      database: 'my_db',
+      user:     'username',
+      password: 'password'
+    },
+    pool: {
+      min: 2,
+      max: 10
+    },
+    migrations: {
+      tableName: 'knex_migrations'
+    }
+  },
+
+  production: {
+    client: 'postgresql',
+    connection: {
+      database: 'my_db',
+      user:     'username',
+      password: 'password'
+    },
+    pool: {
+      min: 2,
+      max: 10
+    },
+    migrations: {
+      tableName: 'knex_migrations'
+    }
+  }
+
+};

node_modules/knex/lib/migrate/stub/knexfile-ls.stub

@@ -0,0 +1,35 @@
+# Update with your config settings.
+
+module.exports =
+
+  development:
+    client: 'sqlite3'
+    connection:
+      filename: './dev.sqlite3'
+    migrations:
+      tableName: 'knex_migrations'
+
+  staging:
+    client: 'postgresql'
+    connection:
+      database: 'my_db'
+      user:     'username'
+      password: 'password'
+    pool:
+      min: 2
+      max: 10
+    migrations:
+      tableName: 'knex_migrations'
+
+  production:
+    client: 'postgresql'
+    connection:
+      database: 'my_db'
+      user:     'username'
+      password: 'password'
+    pool:
+      min: 2
+      max: 10
+    migrations:
+      tableName: 'knex_migrations'
+

node_modules/knex/lib/migrate/stub/knexfile-ts.stub

@@ -0,0 +1,44 @@
+// Update with your config settings.
+
+module.exports = {
+
+  development: {
+    client: "sqlite3",
+    connection: {
+      filename: "./dev.sqlite3"
+    }
+  },
+
+  staging: {
+    client: "postgresql",
+    connection: {
+      database: "my_db",
+      user: "username",
+      password: "password"
+    },
+    pool: {
+      min: 2,
+      max: 10
+    },
+    migrations: {
+      tableName: "knex_migrations"
+    }
+  },
+
+  production: {
+    client: "postgresql",
+    connection: {
+      database: "my_db",
+      user: "username",
+      password: "password"
+    },
+    pool: {
+      min: 2,
+      max: 10
+    },
+    migrations: {
+      tableName: "knex_migrations"
+    }
+  }
+
+};

node_modules/knex/lib/migrate/stub/ls.stub

@@ -0,0 +1,14 @@
+
+exports.up = (knex, Promise) ->
+  <% if (d.tableName) { %>
+  knex.schema.create-table "<%= d.tableName %>", (t) ->
+    t.increments!
+    t.timestamp!
+  <% } %>
+
+
+exports.down = (knex, Promise) ->
+  <% if (d.tableName) { %>
+  knex.schema.drop-table "<%= d.tableName %>"
+  <% } %>
+

node_modules/knex/lib/migrate/stub/ts.stub

@@ -0,0 +1,21 @@
+import * as Knex from "knex";
+
+<% if (d.tableName) { %>
+export async function up(knex: Knex): Promise<Knex.SchemaBuilder> {
+    return knex.schema.createTable("<%= d.tableName %>", (t: Knex.AlterTableBuilder) => {
+        t.increments();
+        t.timestamps();
+    });
+}
+<% } else { %>
+export async function up(knex: Knex): Promise<any> {
+}
+<% } %>
+<% if (d.tableName) { %>
+export async function down(knex: Knex): Promise<Knex.SchemaBuilder> {
+    return knex.schema.dropTable("<%= d.tableName %>");
+}
+<% } else { %>
+export async function down(knex: Knex): Promise<any> {
+}
+<% } %>

node_modules/knex/lib/migrate/table-creator.js

@@ -0,0 +1,67 @@
+const {
+  getTable,
+  getLockTableName,
+  getLockTableNameWithSchema,
+  getTableName,
+} = require('./table-resolver');
+
+function ensureTable(tableName, schemaName, trxOrKnex) {
+  const lockTable = getLockTableName(tableName);
+  const lockTableWithSchema = getLockTableNameWithSchema(tableName, schemaName);
+  return getSchemaBuilder(trxOrKnex, schemaName)
+    .hasTable(tableName)
+    .then((exists) => {
+      return !exists && _createMigrationTable(tableName, schemaName, trxOrKnex);
+    })
+    .then(() => {
+      return getSchemaBuilder(trxOrKnex, schemaName).hasTable(lockTable);
+    })
+    .then((exists) => {
+      return (
+        !exists && _createMigrationLockTable(lockTable, schemaName, trxOrKnex)
+      );
+    })
+    .then(() => {
+      return getTable(trxOrKnex, lockTable, schemaName).select('*');
+    })
+    .then((data) => {
+      return (
+        !data.length &&
+        trxOrKnex.into(lockTableWithSchema).insert({ is_locked: 0 })
+      );
+    });
+}
+
+function _createMigrationTable(tableName, schemaName, trxOrKnex) {
+  return getSchemaBuilder(trxOrKnex, schemaName).createTable(
+    getTableName(tableName),
+    function(t) {
+      t.increments();
+      t.string('name');
+      t.integer('batch');
+      t.timestamp('migration_time');
+    }
+  );
+}
+
+function _createMigrationLockTable(tableName, schemaName, trxOrKnex) {
+  return getSchemaBuilder(trxOrKnex, schemaName).createTable(
+    tableName,
+    function(t) {
+      t.increments('index').primary();
+      t.integer('is_locked');
+    }
+  );
+}
+
+//Get schema-aware schema builder for a given schema nam
+function getSchemaBuilder(trxOrKnex, schemaName) {
+  return schemaName
+    ? trxOrKnex.schema.withSchema(schemaName)
+    : trxOrKnex.schema;
+}
+
+module.exports = {
+  ensureTable,
+  getSchemaBuilder,
+};

node_modules/knex/lib/migrate/table-resolver.js

@@ -0,0 +1,27 @@
+//Get schema-aware table name
+function getTableName(tableName, schemaName) {
+  return schemaName ? `${schemaName}.${tableName}` : tableName;
+}
+
+//Get schema-aware query builder for a given table and schema name
+function getTable(trxOrKnex, tableName, schemaName) {
+  return schemaName
+    ? trxOrKnex(tableName).withSchema(schemaName)
+    : trxOrKnex(tableName);
+}
+function getLockTableName(tableName) {
+  return tableName + '_lock';
+}
+
+function getLockTableNameWithSchema(tableName, schemaName) {
+  return schemaName
+    ? schemaName + '.' + getLockTableName(tableName)
+    : getLockTableName(tableName);
+}
+
+module.exports = {
+  getLockTableName,
+  getLockTableNameWithSchema,
+  getTable,
+  getTableName,
+};

node_modules/knex/lib/query/compiler.js

@@ -0,0 +1,888 @@
+// Query Compiler
+// -------
+const helpers = require('../helpers');
+const Raw = require('../raw');
+const QueryBuilder = require('./builder');
+const JoinClause = require('./joinclause');
+const debug = require('debug');
+
+const {
+  assign,
+  bind,
+  compact,
+  groupBy,
+  isEmpty,
+  isString,
+  isUndefined,
+  map,
+  omitBy,
+  reduce,
+  has,
+} = require('lodash');
+const uuid = require('uuid');
+
+const debugBindings = debug('knex:bindings');
+
+// The "QueryCompiler" takes all of the query statements which
+// have been gathered in the "QueryBuilder" and turns them into a
+// properly formatted / bound query string.
+function QueryCompiler(client, builder) {
+  this.client = client;
+  this.method = builder._method || 'select';
+  this.options = builder._options;
+  this.single = builder._single;
+  this.timeout = builder._timeout || false;
+  this.cancelOnTimeout = builder._cancelOnTimeout || false;
+  this.grouped = groupBy(builder._statements, 'grouping');
+  this.formatter = client.formatter(builder);
+}
+
+const components = [
+  'columns',
+  'join',
+  'where',
+  'union',
+  'group',
+  'having',
+  'order',
+  'limit',
+  'offset',
+  'lock',
+  'waitMode',
+];
+
+assign(QueryCompiler.prototype, {
+  // Used when the insert call is empty.
+  _emptyInsertValue: 'default values',
+
+  // Collapse the builder into a single object
+  toSQL(method, tz) {
+    this._undefinedInWhereClause = false;
+    this.undefinedBindingsInfo = [];
+
+    method = method || this.method;
+    const val = this[method]() || '';
+
+    const query = {
+      method,
+      options: reduce(this.options, assign, {}),
+      timeout: this.timeout,
+      cancelOnTimeout: this.cancelOnTimeout,
+      bindings: this.formatter.bindings || [],
+      __knexQueryUid: uuid.v1(),
+    };
+
+    Object.defineProperties(query, {
+      toNative: {
+        value: () => {
+          return {
+            sql: this.client.positionBindings(query.sql),
+            bindings: this.client.prepBindings(query.bindings),
+          };
+        },
+        enumerable: false,
+      },
+    });
+
+    if (isString(val)) {
+      query.sql = val;
+    } else {
+      assign(query, val);
+    }
+
+    if (method === 'select' || method === 'first') {
+      if (this.single.as) {
+        query.as = this.single.as;
+      }
+    }
+
+    if (this._undefinedInWhereClause) {
+      debugBindings(query.bindings);
+      throw new Error(
+        `Undefined binding(s) detected when compiling ` +
+          `${method.toUpperCase()}. Undefined column(s): [${this.undefinedBindingsInfo.join(
+            ', '
+          )}] query: ${query.sql}`
+      );
+    }
+
+    return query;
+  },
+
+  // Compiles the `select` statement, or nested sub-selects by calling each of
+  // the component compilers, trimming out the empties, and returning a
+  // generated query string.
+  select() {
+    let sql = this.with();
+
+    const statements = components.map((component) => this[component](this));
+    sql += compact(statements).join(' ');
+    return sql;
+  },
+
+  pluck() {
+    let toPluck = this.single.pluck;
+    if (toPluck.indexOf('.') !== -1) {
+      toPluck = toPluck.split('.').slice(-1)[0];
+    }
+    return {
+      sql: this.select(),
+      pluck: toPluck,
+    };
+  },
+
+  // Compiles an "insert" query, allowing for multiple
+  // inserts using a single query statement.
+  insert() {
+    const insertValues = this.single.insert || [];
+    let sql = this.with() + `insert into ${this.tableName} `;
+    if (Array.isArray(insertValues)) {
+      if (insertValues.length === 0) {
+        return '';
+      }
+    } else if (typeof insertValues === 'object' && isEmpty(insertValues)) {
+      return sql + this._emptyInsertValue;
+    }
+
+    const insertData = this._prepInsert(insertValues);
+    if (typeof insertData === 'string') {
+      sql += insertData;
+    } else {
+      if (insertData.columns.length) {
+        sql += `(${this.formatter.columnize(insertData.columns)}`;
+        sql += ') values (';
+        let i = -1;
+        while (++i < insertData.values.length) {
+          if (i !== 0) sql += '), (';
+          sql += this.formatter.parameterize(
+            insertData.values[i],
+            this.client.valueForUndefined
+          );
+        }
+        sql += ')';
+      } else if (insertValues.length === 1 && insertValues[0]) {
+        sql += this._emptyInsertValue;
+      } else {
+        sql = '';
+      }
+    }
+    return sql;
+  },
+
+  // Compiles the "update" query.
+  update() {
+    // Make sure tableName is processed by the formatter first.
+    const withSQL = this.with();
+    const { tableName } = this;
+    const updateData = this._prepUpdate(this.single.update);
+    const wheres = this.where();
+    return (
+      withSQL +
+      `update ${this.single.only ? 'only ' : ''}${tableName}` +
+      ' set ' +
+      updateData.join(', ') +
+      (wheres ? ` ${wheres}` : '')
+    );
+  },
+
+  // Compiles the columns in the query, specifying if an item was distinct.
+  columns() {
+    let distinctClause = '';
+    if (this.onlyUnions()) return '';
+    const columns = this.grouped.columns || [];
+    let i = -1,
+      sql = [];
+    if (columns) {
+      while (++i < columns.length) {
+        const stmt = columns[i];
+        if (stmt.distinct) distinctClause = 'distinct ';
+        if (stmt.distinctOn) {
+          distinctClause = this.distinctOn(stmt.value);
+          continue;
+        }
+        if (stmt.type === 'aggregate') {
+          sql.push(...this.aggregate(stmt));
+        } else if (stmt.type === 'aggregateRaw') {
+          sql.push(this.aggregateRaw(stmt));
+        } else if (stmt.value && stmt.value.length > 0) {
+          sql.push(this.formatter.columnize(stmt.value));
+        }
+      }
+    }
+    if (sql.length === 0) sql = ['*'];
+    return (
+      `select ${distinctClause}` +
+      sql.join(', ') +
+      (this.tableName
+        ? ` from ${this.single.only ? 'only ' : ''}${this.tableName}`
+        : '')
+    );
+  },
+
+  _aggregate(stmt, { aliasSeparator = ' as ', distinctParentheses } = {}) {
+    const value = stmt.value;
+    const method = stmt.method;
+    const distinct = stmt.aggregateDistinct ? 'distinct ' : '';
+    const wrap = (identifier) => this.formatter.wrap(identifier);
+    const addAlias = (value, alias) => {
+      if (alias) {
+        return value + aliasSeparator + wrap(alias);
+      }
+      return value;
+    };
+    const aggregateArray = (value, alias) => {
+      let columns = value.map(wrap).join(', ');
+      if (distinct) {
+        const openParen = distinctParentheses ? '(' : ' ';
+        const closeParen = distinctParentheses ? ')' : '';
+        columns = distinct.trim() + openParen + columns + closeParen;
+      }
+      const aggregated = `${method}(${columns})`;
+      return addAlias(aggregated, alias);
+    };
+    const aggregateString = (value, alias) => {
+      const aggregated = `${method}(${distinct + wrap(value)})`;
+      return addAlias(aggregated, alias);
+    };
+
+    if (Array.isArray(value)) {
+      return [aggregateArray(value)];
+    }
+
+    if (typeof value === 'object') {
+      if (stmt.alias) {
+        throw new Error('When using an object explicit alias can not be used');
+      }
+      return Object.entries(value).map(([alias, column]) => {
+        if (Array.isArray(column)) {
+          return aggregateArray(column, alias);
+        }
+        return aggregateString(column, alias);
+      });
+    }
+
+    // Allows us to speciy an alias for the aggregate types.
+    const splitOn = value.toLowerCase().indexOf(' as ');
+    let column = value;
+    let { alias } = stmt;
+    if (splitOn !== -1) {
+      column = value.slice(0, splitOn);
+      if (alias) {
+        throw new Error(`Found multiple aliases for same column: ${column}`);
+      }
+      alias = value.slice(splitOn + 4);
+    }
+    return [aggregateString(column, alias)];
+  },
+
+  aggregate(stmt) {
+    return this._aggregate(stmt);
+  },
+
+  aggregateRaw(stmt) {
+    const distinct = stmt.aggregateDistinct ? 'distinct ' : '';
+    return `${stmt.method}(${distinct + this.formatter.unwrapRaw(stmt.value)})`;
+  },
+
+  // Compiles all each of the `join` clauses on the query,
+  // including any nested join queries.
+  join() {
+    let sql = '';
+    let i = -1;
+    const joins = this.grouped.join;
+    if (!joins) return '';
+    while (++i < joins.length) {
+      const join = joins[i];
+      const table = join.schema ? `${join.schema}.${join.table}` : join.table;
+      if (i > 0) sql += ' ';
+      if (join.joinType === 'raw') {
+        sql += this.formatter.unwrapRaw(join.table);
+      } else {
+        sql += join.joinType + ' join ' + this.formatter.wrap(table);
+        let ii = -1;
+        while (++ii < join.clauses.length) {
+          const clause = join.clauses[ii];
+          if (ii > 0) {
+            sql += ` ${clause.bool} `;
+          } else {
+            sql += ` ${clause.type === 'onUsing' ? 'using' : 'on'} `;
+          }
+          const val = this[clause.type].call(this, clause);
+          if (val) {
+            sql += val;
+          }
+        }
+      }
+    }
+    return sql;
+  },
+
+  onBetween(statement) {
+    return (
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this._not(statement, 'between') +
+      ' ' +
+      map(statement.value, bind(this.formatter.parameter, this.formatter)).join(
+        ' and '
+      )
+    );
+  },
+
+  onNull(statement) {
+    return (
+      this.formatter.wrap(statement.column) +
+      ' is ' +
+      this._not(statement, 'null')
+    );
+  },
+
+  onExists(statement) {
+    return (
+      this._not(statement, 'exists') +
+      ' (' +
+      this.formatter.rawOrFn(statement.value) +
+      ')'
+    );
+  },
+
+  onIn(statement) {
+    if (Array.isArray(statement.column)) return this.multiOnIn(statement);
+    return (
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this._not(statement, 'in ') +
+      this.wrap(this.formatter.parameterize(statement.value))
+    );
+  },
+
+  multiOnIn(statement) {
+    let i = -1,
+      sql = `(${this.formatter.columnize(statement.column)}) `;
+    sql += this._not(statement, 'in ') + '((';
+    while (++i < statement.value.length) {
+      if (i !== 0) sql += '),(';
+      sql += this.formatter.parameterize(statement.value[i]);
+    }
+    return sql + '))';
+  },
+
+  // Compiles all `where` statements on the query.
+  where() {
+    const wheres = this.grouped.where;
+    if (!wheres) return;
+    const sql = [];
+    let i = -1;
+    while (++i < wheres.length) {
+      const stmt = wheres[i];
+      if (
+        Object.prototype.hasOwnProperty.call(stmt, 'value') &&
+        helpers.containsUndefined(stmt.value)
+      ) {
+        this.undefinedBindingsInfo.push(stmt.column);
+        this._undefinedInWhereClause = true;
+      }
+      const val = this[stmt.type](stmt);
+      if (val) {
+        if (sql.length === 0) {
+          sql[0] = 'where';
+        } else {
+          sql.push(stmt.bool);
+        }
+        sql.push(val);
+      }
+    }
+    return sql.length > 1 ? sql.join(' ') : '';
+  },
+
+  group() {
+    return this._groupsOrders('group');
+  },
+
+  order() {
+    return this._groupsOrders('order');
+  },
+
+  // Compiles the `having` statements.
+  having() {
+    const havings = this.grouped.having;
+    if (!havings) return '';
+    const sql = ['having'];
+    for (let i = 0, l = havings.length; i < l; i++) {
+      const s = havings[i];
+      const val = this[s.type](s);
+      if (val) {
+        if (sql.length === 0) {
+          sql[0] = 'where';
+        }
+        if (sql.length > 1 || (sql.length === 1 && sql[0] !== 'having')) {
+          sql.push(s.bool);
+        }
+        sql.push(val);
+      }
+    }
+    return sql.length > 1 ? sql.join(' ') : '';
+  },
+
+  havingRaw(statement) {
+    return this._not(statement, '') + this.formatter.unwrapRaw(statement.value);
+  },
+
+  havingWrapped(statement) {
+    const val = this.formatter.rawOrFn(statement.value, 'where');
+    return (val && this._not(statement, '') + '(' + val.slice(6) + ')') || '';
+  },
+
+  havingBasic(statement) {
+    return (
+      this._not(statement, '') +
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this.formatter.operator(statement.operator) +
+      ' ' +
+      this.formatter.parameter(statement.value)
+    );
+  },
+
+  havingNull(statement) {
+    return (
+      this.formatter.wrap(statement.column) +
+      ' is ' +
+      this._not(statement, 'null')
+    );
+  },
+
+  havingExists(statement) {
+    return (
+      this._not(statement, 'exists') +
+      ' (' +
+      this.formatter.rawOrFn(statement.value) +
+      ')'
+    );
+  },
+
+  havingBetween(statement) {
+    return (
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this._not(statement, 'between') +
+      ' ' +
+      map(statement.value, bind(this.formatter.parameter, this.formatter)).join(
+        ' and '
+      )
+    );
+  },
+
+  havingIn(statement) {
+    if (Array.isArray(statement.column)) return this.multiHavingIn(statement);
+    return (
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this._not(statement, 'in ') +
+      this.wrap(this.formatter.parameterize(statement.value))
+    );
+  },
+
+  multiHavingIn(statement) {
+    let i = -1,
+      sql = `(${this.formatter.columnize(statement.column)}) `;
+    sql += this._not(statement, 'in ') + '((';
+    while (++i < statement.value.length) {
+      if (i !== 0) sql += '),(';
+      sql += this.formatter.parameterize(statement.value[i]);
+    }
+    return sql + '))';
+  },
+
+  // Compile the "union" queries attached to the main query.
+  union() {
+    const onlyUnions = this.onlyUnions();
+    const unions = this.grouped.union;
+    if (!unions) return '';
+    let sql = '';
+    for (let i = 0, l = unions.length; i < l; i++) {
+      const union = unions[i];
+      if (i > 0) sql += ' ';
+      if (i > 0 || !onlyUnions) sql += union.clause + ' ';
+      const statement = this.formatter.rawOrFn(union.value);
+      if (statement) {
+        if (union.wrap) sql += '(';
+        sql += statement;
+        if (union.wrap) sql += ')';
+      }
+    }
+    return sql;
+  },
+
+  // If we haven't specified any columns or a `tableName`, we're assuming this
+  // is only being used for unions.
+  onlyUnions() {
+    return !this.grouped.columns && this.grouped.union && !this.tableName;
+  },
+
+  limit() {
+    const noLimit = !this.single.limit && this.single.limit !== 0;
+    if (noLimit) return '';
+    return `limit ${this.formatter.parameter(this.single.limit)}`;
+  },
+
+  offset() {
+    if (!this.single.offset) return '';
+    return `offset ${this.formatter.parameter(this.single.offset)}`;
+  },
+
+  // Compiles a `delete` query.
+  del() {
+    // Make sure tableName is processed by the formatter first.
+    const { tableName } = this;
+    const withSQL = this.with();
+    const wheres = this.where();
+    return (
+      withSQL +
+      `delete from ${this.single.only ? 'only ' : ''}${tableName}` +
+      (wheres ? ` ${wheres}` : '')
+    );
+  },
+
+  // Compiles a `truncate` query.
+  truncate() {
+    return `truncate ${this.tableName}`;
+  },
+
+  // Compiles the "locks".
+  lock() {
+    if (this.single.lock) {
+      return this[this.single.lock]();
+    }
+  },
+
+  // Compiles the wait mode on the locks.
+  waitMode() {
+    if (this.single.waitMode) {
+      return this[this.single.waitMode]();
+    }
+  },
+
+  // Fail on unsupported databases
+  skipLocked() {
+    throw new Error(
+      '.skipLocked() is currently only supported on MySQL 8.0+ and PostgreSQL 9.5+'
+    );
+  },
+
+  // Fail on unsupported databases
+  noWait() {
+    throw new Error(
+      '.noWait() is currently only supported on MySQL 8.0+, MariaDB 10.3.0+ and PostgreSQL 9.5+'
+    );
+  },
+
+  distinctOn(value) {
+    throw new Error('.distinctOn() is currently only supported on PostgreSQL');
+  },
+
+  // On Clause
+  // ------
+
+  onWrapped(clause) {
+    const self = this;
+
+    const wrapJoin = new JoinClause();
+    clause.value.call(wrapJoin, wrapJoin);
+
+    let sql = '';
+    wrapJoin.clauses.forEach(function(wrapClause, ii) {
+      if (ii > 0) {
+        sql += ` ${wrapClause.bool} `;
+      }
+      const val = self[wrapClause.type](wrapClause);
+      if (val) {
+        sql += val;
+      }
+    });
+
+    if (sql.length) {
+      return `(${sql})`;
+    }
+    return '';
+  },
+
+  onBasic(clause) {
+    return (
+      this.formatter.wrap(clause.column) +
+      ' ' +
+      this.formatter.operator(clause.operator) +
+      ' ' +
+      this.formatter.wrap(clause.value)
+    );
+  },
+
+  onVal(clause) {
+    return (
+      this.formatter.wrap(clause.column) +
+      ' ' +
+      this.formatter.operator(clause.operator) +
+      ' ' +
+      this.formatter.parameter(clause.value)
+    );
+  },
+
+  onRaw(clause) {
+    return this.formatter.unwrapRaw(clause.value);
+  },
+
+  onUsing(clause) {
+    return '(' + this.formatter.columnize(clause.column) + ')';
+  },
+
+  // Where Clause
+  // ------
+
+  whereIn(statement) {
+    let columns = null;
+    if (Array.isArray(statement.column)) {
+      columns = `(${this.formatter.columnize(statement.column)})`;
+    } else {
+      columns = this.formatter.wrap(statement.column);
+    }
+
+    const values = this.formatter.values(statement.value);
+    return `${columns} ${this._not(statement, 'in ')}${values}`;
+  },
+
+  whereNull(statement) {
+    return (
+      this.formatter.wrap(statement.column) +
+      ' is ' +
+      this._not(statement, 'null')
+    );
+  },
+
+  // Compiles a basic "where" clause.
+  whereBasic(statement) {
+    return (
+      this._not(statement, '') +
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this.formatter.operator(statement.operator) +
+      ' ' +
+      (statement.asColumn
+        ? this.formatter.wrap(statement.value)
+        : this.formatter.parameter(statement.value))
+    );
+  },
+
+  whereExists(statement) {
+    return (
+      this._not(statement, 'exists') +
+      ' (' +
+      this.formatter.rawOrFn(statement.value) +
+      ')'
+    );
+  },
+
+  whereWrapped(statement) {
+    const val = this.formatter.rawOrFn(statement.value, 'where');
+    return (val && this._not(statement, '') + '(' + val.slice(6) + ')') || '';
+  },
+
+  whereBetween(statement) {
+    return (
+      this.formatter.wrap(statement.column) +
+      ' ' +
+      this._not(statement, 'between') +
+      ' ' +
+      map(statement.value, bind(this.formatter.parameter, this.formatter)).join(
+        ' and '
+      )
+    );
+  },
+
+  // Compiles a "whereRaw" query.
+  whereRaw(statement) {
+    return this._not(statement, '') + this.formatter.unwrapRaw(statement.value);
+  },
+
+  wrap(str) {
+    if (str.charAt(0) !== '(') return `(${str})`;
+    return str;
+  },
+
+  // Compiles all `with` statements on the query.
+  with() {
+    if (!this.grouped.with || !this.grouped.with.length) {
+      return '';
+    }
+    const withs = this.grouped.with;
+    if (!withs) return;
+    const sql = [];
+    let i = -1;
+    let isRecursive = false;
+    while (++i < withs.length) {
+      const stmt = withs[i];
+      if (stmt.recursive) {
+        isRecursive = true;
+      }
+      const val = this[stmt.type](stmt);
+      sql.push(val);
+    }
+    return `with ${isRecursive ? 'recursive ' : ''}${sql.join(', ')} `;
+  },
+
+  withWrapped(statement) {
+    const val = this.formatter.rawOrFn(statement.value);
+    return (
+      (val &&
+        this.formatter.columnize(statement.alias) + ' as (' + val + ')') ||
+      ''
+    );
+  },
+
+  // Determines whether to add a "not" prefix to the where clause.
+  _not(statement, str) {
+    if (statement.not) return `not ${str}`;
+    return str;
+  },
+
+  _prepInsert(data) {
+    const isRaw = this.formatter.rawOrFn(data);
+    if (isRaw) return isRaw;
+    let columns = [];
+    const values = [];
+    if (!Array.isArray(data)) data = data ? [data] : [];
+    let i = -1;
+    while (++i < data.length) {
+      if (data[i] == null) break;
+      if (i === 0) columns = Object.keys(data[i]).sort();
+      const row = new Array(columns.length);
+      const keys = Object.keys(data[i]);
+      let j = -1;
+      while (++j < keys.length) {
+        const key = keys[j];
+        let idx = columns.indexOf(key);
+        if (idx === -1) {
+          columns = columns.concat(key).sort();
+          idx = columns.indexOf(key);
+          let k = -1;
+          while (++k < values.length) {
+            values[k].splice(idx, 0, undefined);
+          }
+          row.splice(idx, 0, undefined);
+        }
+        row[idx] = data[i][key];
+      }
+      values.push(row);
+    }
+    return {
+      columns,
+      values,
+    };
+  },
+
+  // "Preps" the update.
+  _prepUpdate(data = {}) {
+    const { counter = {} } = this.single;
+
+    for (const column of Object.keys(counter)) {
+      //Skip?
+      if (has(data, column)) {
+        //Needed?
+        this.client.logger.warn(
+          `increment/decrement called for a column that has already been specified in main .update() call. Ignoring increment/decrement and using value from .update() call.`
+        );
+        continue;
+      }
+
+      let value = counter[column];
+
+      const symbol = value < 0 ? '-' : '+';
+
+      if (symbol === '-') {
+        value = -value;
+      }
+
+      data[column] = this.client.raw(`?? ${symbol} ?`, [column, value]);
+    }
+
+    data = omitBy(data, isUndefined);
+
+    const vals = [];
+    const columns = Object.keys(data);
+    let i = -1;
+
+    while (++i < columns.length) {
+      vals.push(
+        this.formatter.wrap(columns[i]) +
+          ' = ' +
+          this.formatter.parameter(data[columns[i]])
+      );
+    }
+
+    if (isEmpty(vals)) {
+      throw new Error(
+        [
+          'Empty .update() call detected!',
+          'Update data does not contain any values to update.',
+          'This will result in a faulty query.',
+          this.single.table ? `Table: ${this.single.table}.` : '',
+          this.single.update
+            ? `Columns: ${Object.keys(this.single.update)}.`
+            : '',
+        ].join(' ')
+      );
+    }
+
+    return vals;
+  },
+
+  _formatGroupsItemValue(value) {
+    const { formatter } = this;
+    if (value instanceof Raw) {
+      return formatter.unwrapRaw(value);
+    } else if (value instanceof QueryBuilder) {
+      return '(' + formatter.columnize(value) + ')';
+    } else {
+      return formatter.columnize(value);
+    }
+  },
+
+  // Compiles the `order by` statements.
+  _groupsOrders(type) {
+    const items = this.grouped[type];
+    if (!items) return '';
+    const { formatter } = this;
+    const sql = items.map((item) => {
+      const column = this._formatGroupsItemValue(item.value);
+      const direction =
+        type === 'order' && item.type !== 'orderByRaw'
+          ? ` ${formatter.direction(item.direction)}`
+          : '';
+      return column + direction;
+    });
+    return sql.length ? type + ' by ' + sql.join(', ') : '';
+  },
+});
+
+QueryCompiler.prototype.first = QueryCompiler.prototype.select;
+
+// Get the table name, wrapping it if necessary.
+// Implemented as a property to prevent ordering issues as described in #704.
+Object.defineProperty(QueryCompiler.prototype, 'tableName', {
+  get() {
+    if (!this._tableName) {
+      // Only call this.formatter.wrap() the first time this property is accessed.
+      let tableName = this.single.table;
+      const schemaName = this.single.schema;
+
+      if (tableName && schemaName) tableName = `${schemaName}.${tableName}`;
+
+      this._tableName = tableName
+        ? // Wrap subQuery with parenthesis, #3485
+          this.formatter.wrap(tableName, tableName instanceof QueryBuilder)
+        : '';
+    }
+    return this._tableName;
+  },
+});
+
+module.exports = QueryCompiler;

node_modules/knex/lib/query/constants.js

@@ -0,0 +1,13 @@
+/**
+ * internal constants, do not use in application code
+ */
+module.exports = {
+  lockMode: {
+    forShare: 'forShare',
+    forUpdate: 'forUpdate',
+  },
+  waitMode: {
+    skipLocked: 'skipLocked',
+    noWait: 'noWait',
+  },
+};

node_modules/knex/lib/query/joinclause.js

@@ -0,0 +1,271 @@
+const assert = require('assert');
+
+// JoinClause
+// -------
+
+// The "JoinClause" is an object holding any necessary info about a join,
+// including the type, and any associated tables & columns being joined.
+function JoinClause(table, type, schema) {
+  this.schema = schema;
+  this.table = table;
+  this.joinType = type;
+  this.and = this;
+  this.clauses = [];
+}
+
+function getClauseFromArguments(compilerType, bool, first, operator, second) {
+  let data = null;
+
+  if (typeof first === 'function') {
+    data = {
+      type: 'onWrapped',
+      value: first,
+      bool: bool,
+    };
+  } else {
+    switch (arguments.length) {
+      case 3: {
+        data = { type: 'onRaw', value: first, bool };
+        break;
+      }
+      case 4:
+        data = {
+          type: compilerType,
+          column: first,
+          operator: '=',
+          value: operator,
+          bool,
+        };
+        break;
+      default:
+        data = {
+          type: compilerType,
+          column: first,
+          operator,
+          value: second,
+          bool,
+        };
+    }
+  }
+
+  return data;
+}
+
+Object.assign(JoinClause.prototype, {
+  grouping: 'join',
+
+  // Adds an "on" clause to the current join object.
+  on(first) {
+    if (typeof first === 'object' && typeof first.toSQL !== 'function') {
+      const keys = Object.keys(first);
+      let i = -1;
+      const method = this._bool() === 'or' ? 'orOn' : 'on';
+      while (++i < keys.length) {
+        this[method](keys[i], first[keys[i]]);
+      }
+      return this;
+    }
+
+    const data = getClauseFromArguments('onBasic', this._bool(), ...arguments);
+
+    if (data) {
+      this.clauses.push(data);
+    }
+
+    return this;
+  },
+
+  // Adds a "using" clause to the current join.
+  using(column) {
+    return this.clauses.push({ type: 'onUsing', column, bool: this._bool() });
+  },
+
+  /*// Adds an "and on" clause to the current join object.
+  andOn() {
+    return this.on.apply(this, arguments);
+  },*/
+
+  // Adds an "or on" clause to the current join object.
+  orOn(first, operator, second) {
+    return this._bool('or').on.apply(this, arguments);
+  },
+
+  onVal(first) {
+    if (typeof first === 'object' && typeof first.toSQL !== 'function') {
+      const keys = Object.keys(first);
+      let i = -1;
+      const method = this._bool() === 'or' ? 'orOnVal' : 'onVal';
+      while (++i < keys.length) {
+        this[method](keys[i], first[keys[i]]);
+      }
+      return this;
+    }
+
+    const data = getClauseFromArguments('onVal', this._bool(), ...arguments);
+
+    if (data) {
+      this.clauses.push(data);
+    }
+
+    return this;
+  },
+
+  andOnVal() {
+    return this.onVal(...arguments);
+  },
+
+  orOnVal() {
+    return this._bool('or').onVal(...arguments);
+  },
+
+  onBetween(column, values) {
+    assert(
+      Array.isArray(values),
+      'The second argument to onBetween must be an array.'
+    );
+    assert(
+      values.length === 2,
+      'You must specify 2 values for the onBetween clause'
+    );
+    this.clauses.push({
+      type: 'onBetween',
+      column,
+      value: values,
+      bool: this._bool(),
+      not: this._not(),
+    });
+    return this;
+  },
+
+  onNotBetween(column, values) {
+    return this._not(true).onBetween(column, values);
+  },
+
+  orOnBetween(column, values) {
+    return this._bool('or').onBetween(column, values);
+  },
+
+  orOnNotBetween(column, values) {
+    return this._bool('or')
+      ._not(true)
+      .onBetween(column, values);
+  },
+
+  onIn(column, values) {
+    if (Array.isArray(values) && values.length === 0) return this.on(1, '=', 0);
+    this.clauses.push({
+      type: 'onIn',
+      column,
+      value: values,
+      not: this._not(),
+      bool: this._bool(),
+    });
+    return this;
+  },
+
+  onNotIn(column, values) {
+    return this._not(true).onIn(column, values);
+  },
+
+  orOnIn(column, values) {
+    return this._bool('or').onIn(column, values);
+  },
+
+  orOnNotIn(column, values) {
+    return this._bool('or')
+      ._not(true)
+      .onIn(column, values);
+  },
+
+  onNull(column) {
+    this.clauses.push({
+      type: 'onNull',
+      column,
+      not: this._not(),
+      bool: this._bool(),
+    });
+    return this;
+  },
+
+  orOnNull(callback) {
+    return this._bool('or').onNull(callback);
+  },
+
+  onNotNull(callback) {
+    return this._not(true).onNull(callback);
+  },
+
+  orOnNotNull(callback) {
+    return this._not(true)
+      ._bool('or')
+      .onNull(callback);
+  },
+
+  onExists(callback) {
+    this.clauses.push({
+      type: 'onExists',
+      value: callback,
+      not: this._not(),
+      bool: this._bool(),
+    });
+    return this;
+  },
+
+  orOnExists(callback) {
+    return this._bool('or').onExists(callback);
+  },
+
+  onNotExists(callback) {
+    return this._not(true).onExists(callback);
+  },
+
+  orOnNotExists(callback) {
+    return this._not(true)
+      ._bool('or')
+      .onExists(callback);
+  },
+
+  // Explicitly set the type of join, useful within a function when creating a grouped join.
+  type(type) {
+    this.joinType = type;
+    return this;
+  },
+
+  _bool(bool) {
+    if (arguments.length === 1) {
+      this._boolFlag = bool;
+      return this;
+    }
+    const ret = this._boolFlag || 'and';
+    this._boolFlag = 'and';
+    return ret;
+  },
+
+  _not(val) {
+    if (arguments.length === 1) {
+      this._notFlag = val;
+      return this;
+    }
+    const ret = this._notFlag;
+    this._notFlag = false;
+    return ret;
+  },
+});
+
+Object.defineProperty(JoinClause.prototype, 'or', {
+  get() {
+    return this._bool('or');
+  },
+});
+
+JoinClause.prototype.andOn = JoinClause.prototype.on;
+JoinClause.prototype.andOnIn = JoinClause.prototype.onIn;
+JoinClause.prototype.andOnNotIn = JoinClause.prototype.onNotIn;
+JoinClause.prototype.andOnNull = JoinClause.prototype.onNull;
+JoinClause.prototype.andOnNotNull = JoinClause.prototype.onNotNull;
+JoinClause.prototype.andOnExists = JoinClause.prototype.onExists;
+JoinClause.prototype.andOnNotExists = JoinClause.prototype.onNotExists;
+JoinClause.prototype.andOnBetween = JoinClause.prototype.onBetween;
+JoinClause.prototype.andOnNotBetween = JoinClause.prototype.onNotBetween;
+
+module.exports = JoinClause;

node_modules/knex/lib/query/methods.js

@@ -0,0 +1,91 @@
+// All properties we can use to start a query chain
+// from the `knex` object, e.g. `knex.select('*').from(...`
+module.exports = [
+  'with',
+  'withRecursive',
+  'select',
+  'as',
+  'columns',
+  'column',
+  'from',
+  'fromJS',
+  'into',
+  'withSchema',
+  'table',
+  'distinct',
+  'join',
+  'joinRaw',
+  'innerJoin',
+  'leftJoin',
+  'leftOuterJoin',
+  'rightJoin',
+  'rightOuterJoin',
+  'outerJoin',
+  'fullOuterJoin',
+  'crossJoin',
+  'where',
+  'andWhere',
+  'orWhere',
+  'whereNot',
+  'orWhereNot',
+  'whereRaw',
+  'whereWrapped',
+  'havingWrapped',
+  'orWhereRaw',
+  'whereExists',
+  'orWhereExists',
+  'whereNotExists',
+  'orWhereNotExists',
+  'whereIn',
+  'orWhereIn',
+  'whereNotIn',
+  'orWhereNotIn',
+  'whereNull',
+  'orWhereNull',
+  'whereNotNull',
+  'orWhereNotNull',
+  'whereBetween',
+  'whereNotBetween',
+  'andWhereBetween',
+  'andWhereNotBetween',
+  'orWhereBetween',
+  'orWhereNotBetween',
+  'groupBy',
+  'groupByRaw',
+  'orderBy',
+  'orderByRaw',
+  'union',
+  'unionAll',
+  'intersect',
+  'having',
+  'havingRaw',
+  'orHaving',
+  'orHavingRaw',
+  'offset',
+  'limit',
+  'count',
+  'countDistinct',
+  'min',
+  'max',
+  'sum',
+  'sumDistinct',
+  'avg',
+  'avgDistinct',
+  'increment',
+  'decrement',
+  'first',
+  'debug',
+  'pluck',
+  'clearSelect',
+  'clearWhere',
+  'clearOrder',
+  'clearHaving',
+  'insert',
+  'update',
+  'returning',
+  'del',
+  'delete',
+  'truncate',
+  'transacting',
+  'connection',
+];

node_modules/knex/lib/query/string.js

@@ -0,0 +1,190 @@
+/*eslint max-len: 0, no-var:0 */
+
+const charsRegex = /[\0\b\t\n\r\x1a"'\\]/g; // eslint-disable-line no-control-regex
+const charsMap = {
+  '\0': '\\0',
+  '\b': '\\b',
+  '\t': '\\t',
+  '\n': '\\n',
+  '\r': '\\r',
+  '\x1a': '\\Z',
+  '"': '\\"',
+  "'": "\\'",
+  '\\': '\\\\',
+};
+
+function wrapEscape(escapeFn) {
+  return function finalEscape(val, ctx = {}) {
+    return escapeFn(val, finalEscape, ctx);
+  };
+}
+
+function makeEscape(config = {}) {
+  const finalEscapeDate = config.escapeDate || dateToString;
+  const finalEscapeArray = config.escapeArray || arrayToList;
+  const finalEscapeBuffer = config.escapeBuffer || bufferToString;
+  const finalEscapeString = config.escapeString || escapeString;
+  const finalEscapeObject = config.escapeObject || escapeObject;
+  const finalWrap = config.wrap || wrapEscape;
+
+  function escapeFn(val, finalEscape, ctx) {
+    if (val === undefined || val === null) {
+      return 'NULL';
+    }
+    switch (typeof val) {
+      case 'boolean':
+        return val ? 'true' : 'false';
+      case 'number':
+        return val + '';
+      case 'object':
+        if (val instanceof Date) {
+          val = finalEscapeDate(val, finalEscape, ctx);
+        } else if (Array.isArray(val)) {
+          return finalEscapeArray(val, finalEscape, ctx);
+        } else if (Buffer.isBuffer(val)) {
+          return finalEscapeBuffer(val, finalEscape, ctx);
+        } else {
+          return finalEscapeObject(val, finalEscape, ctx);
+        }
+    }
+    return finalEscapeString(val, finalEscape, ctx);
+  }
+
+  return finalWrap ? finalWrap(escapeFn) : escapeFn;
+}
+
+function escapeObject(val, finalEscape, ctx) {
+  if (val && typeof val.toSQL === 'function') {
+    return val.toSQL(ctx);
+  } else {
+    return JSON.stringify(val);
+  }
+}
+
+function arrayToList(array, finalEscape, ctx) {
+  let sql = '';
+  for (let i = 0; i < array.length; i++) {
+    const val = array[i];
+    if (Array.isArray(val)) {
+      sql +=
+        (i === 0 ? '' : ', ') + '(' + arrayToList(val, finalEscape, ctx) + ')';
+    } else {
+      sql += (i === 0 ? '' : ', ') + finalEscape(val, ctx);
+    }
+  }
+  return sql;
+}
+
+function bufferToString(buffer) {
+  return 'X' + escapeString(buffer.toString('hex'));
+}
+
+function escapeString(val, finalEscape, ctx) {
+  let chunkIndex = (charsRegex.lastIndex = 0);
+  let escapedVal = '';
+  let match;
+
+  while ((match = charsRegex.exec(val))) {
+    escapedVal += val.slice(chunkIndex, match.index) + charsMap[match[0]];
+    chunkIndex = charsRegex.lastIndex;
+  }
+
+  if (chunkIndex === 0) {
+    // Nothing was escaped
+    return "'" + val + "'";
+  }
+
+  if (chunkIndex < val.length) {
+    return "'" + escapedVal + val.slice(chunkIndex) + "'";
+  }
+
+  return "'" + escapedVal + "'";
+}
+
+function dateToString(date, finalEscape, ctx) {
+  const timeZone = ctx.timeZone || 'local';
+
+  const dt = new Date(date);
+  let year;
+  let month;
+  let day;
+  let hour;
+  let minute;
+  let second;
+  let millisecond;
+
+  if (timeZone === 'local') {
+    year = dt.getFullYear();
+    month = dt.getMonth() + 1;
+    day = dt.getDate();
+    hour = dt.getHours();
+    minute = dt.getMinutes();
+    second = dt.getSeconds();
+    millisecond = dt.getMilliseconds();
+  } else {
+    const tz = convertTimezone(timeZone);
+
+    if (tz !== false && tz !== 0) {
+      dt.setTime(dt.getTime() + tz * 60000);
+    }
+
+    year = dt.getUTCFullYear();
+    month = dt.getUTCMonth() + 1;
+    day = dt.getUTCDate();
+    hour = dt.getUTCHours();
+    minute = dt.getUTCMinutes();
+    second = dt.getUTCSeconds();
+    millisecond = dt.getUTCMilliseconds();
+  }
+
+  // YYYY-MM-DD HH:mm:ss.mmm
+  return (
+    zeroPad(year, 4) +
+    '-' +
+    zeroPad(month, 2) +
+    '-' +
+    zeroPad(day, 2) +
+    ' ' +
+    zeroPad(hour, 2) +
+    ':' +
+    zeroPad(minute, 2) +
+    ':' +
+    zeroPad(second, 2) +
+    '.' +
+    zeroPad(millisecond, 3)
+  );
+}
+
+function zeroPad(number, length) {
+  number = number.toString();
+  while (number.length < length) {
+    number = '0' + number;
+  }
+  return number;
+}
+
+function convertTimezone(tz) {
+  if (tz === 'Z') {
+    return 0;
+  }
+  const m = tz.match(/([+\-\s])(\d\d):?(\d\d)?/);
+  if (m) {
+    return (
+      (m[1] == '-' ? -1 : 1) *
+      (parseInt(m[2], 10) + (m[3] ? parseInt(m[3], 10) : 0) / 60) *
+      60
+    );
+  }
+  return false;
+}
+
+module.exports = {
+  arrayToList,
+  bufferToString,
+  dateToString,
+  escapeString,
+  charsRegex,
+  charsMap,
+  escapeObject,
+  makeEscape,
+};

node_modules/knex/lib/raw.js

@@ -0,0 +1,192 @@
+// Raw
+// -------
+const inherits = require('inherits');
+const helpers = require('./helpers');
+const { EventEmitter } = require('events');
+const debug = require('debug');
+
+const {
+  assign,
+  reduce,
+  isPlainObject,
+  isObject,
+  isUndefined,
+  isNumber,
+} = require('lodash');
+const saveAsyncStack = require('./util/save-async-stack');
+const uuid = require('uuid');
+
+const debugBindings = debug('knex:bindings');
+
+function Raw(client) {
+  this.client = client;
+
+  this.sql = '';
+  this.bindings = [];
+
+  // Todo: Deprecate
+  this._wrappedBefore = undefined;
+  this._wrappedAfter = undefined;
+  if (client && client.config) {
+    this._debug = client.config.debug;
+    saveAsyncStack(this, 4);
+  }
+}
+
+inherits(Raw, EventEmitter);
+
+assign(Raw.prototype, {
+  set(sql, bindings) {
+    this.sql = sql;
+    this.bindings =
+      (isObject(bindings) && !bindings.toSQL) || isUndefined(bindings)
+        ? bindings
+        : [bindings];
+
+    return this;
+  },
+
+  timeout(ms, { cancel } = {}) {
+    if (isNumber(ms) && ms > 0) {
+      this._timeout = ms;
+      if (cancel) {
+        this.client.assertCanCancelQuery();
+        this._cancelOnTimeout = true;
+      }
+    }
+    return this;
+  },
+
+  // Wraps the current sql with `before` and `after`.
+  wrap(before, after) {
+    this._wrappedBefore = before;
+    this._wrappedAfter = after;
+    return this;
+  },
+
+  // Calls `toString` on the Knex object.
+  toString() {
+    return this.toQuery();
+  },
+
+  // Returns the raw sql for the query.
+  toSQL(method, tz) {
+    let obj;
+    const formatter = this.client.formatter(this);
+
+    if (Array.isArray(this.bindings)) {
+      obj = replaceRawArrBindings(this, formatter);
+    } else if (this.bindings && isPlainObject(this.bindings)) {
+      obj = replaceKeyBindings(this, formatter);
+    } else {
+      obj = {
+        method: 'raw',
+        sql: this.sql,
+        bindings: isUndefined(this.bindings) ? [] : [this.bindings],
+      };
+    }
+
+    if (this._wrappedBefore) {
+      obj.sql = this._wrappedBefore + obj.sql;
+    }
+    if (this._wrappedAfter) {
+      obj.sql = obj.sql + this._wrappedAfter;
+    }
+
+    obj.options = reduce(this._options, assign, {});
+
+    if (this._timeout) {
+      obj.timeout = this._timeout;
+      if (this._cancelOnTimeout) {
+        obj.cancelOnTimeout = this._cancelOnTimeout;
+      }
+    }
+
+    obj.bindings = obj.bindings || [];
+    if (helpers.containsUndefined(obj.bindings)) {
+      const undefinedBindingIndices = helpers.getUndefinedIndices(
+        this.bindings
+      );
+      debugBindings(obj.bindings);
+      throw new Error(
+        `Undefined binding(s) detected for keys [${undefinedBindingIndices}] when compiling RAW query: ${obj.sql}`
+      );
+    }
+
+    obj.__knexQueryUid = uuid.v1();
+
+    return obj;
+  },
+});
+
+function replaceRawArrBindings(raw, formatter) {
+  const expectedBindings = raw.bindings.length;
+  const values = raw.bindings;
+  let index = 0;
+
+  const sql = raw.sql.replace(/\\?\?\??/g, function(match) {
+    if (match === '\\?') {
+      return match;
+    }
+
+    const value = values[index++];
+
+    if (match === '??') {
+      return formatter.columnize(value);
+    }
+    return formatter.parameter(value);
+  });
+
+  if (expectedBindings !== index) {
+    throw new Error(`Expected ${expectedBindings} bindings, saw ${index}`);
+  }
+
+  return {
+    method: 'raw',
+    sql,
+    bindings: formatter.bindings,
+  };
+}
+
+function replaceKeyBindings(raw, formatter) {
+  const values = raw.bindings;
+  const regex = /\\?(:(\w+):(?=::)|:(\w+):(?!:)|:(\w+))/g;
+
+  const sql = raw.sql.replace(regex, function(match, p1, p2, p3, p4) {
+    if (match !== p1) {
+      return p1;
+    }
+
+    const part = p2 || p3 || p4;
+    const key = match.trim();
+    const isIdentifier = key[key.length - 1] === ':';
+    const value = values[part];
+
+    if (value === undefined) {
+      if (Object.prototype.hasOwnProperty.call(values, part)) {
+        formatter.bindings.push(value);
+      }
+
+      return match;
+    }
+
+    if (isIdentifier) {
+      return match.replace(p1, formatter.columnize(value));
+    }
+
+    return match.replace(p1, formatter.parameter(value));
+  });
+
+  return {
+    method: 'raw',
+    sql,
+    bindings: formatter.bindings,
+  };
+}
+
+// Allow the `Raw` object to be utilized with full access to the relevant
+// promise API.
+require('./interface')(Raw);
+helpers.addQueryContext(Raw);
+
+module.exports = Raw;

node_modules/knex/lib/ref.js

@@ -0,0 +1,39 @@
+const Raw = require('./raw');
+
+class Ref extends Raw {
+  constructor(client, ref) {
+    super(client);
+
+    this.ref = ref;
+    this._schema = null;
+    this._alias = null;
+  }
+
+  withSchema(schema) {
+    this._schema = schema;
+
+    return this;
+  }
+
+  as(alias) {
+    this._alias = alias;
+
+    return this;
+  }
+
+  toSQL() {
+    const string = this._schema ? `${this._schema}.${this.ref}` : this.ref;
+
+    const formatter = this.client.formatter(this);
+
+    const ref = formatter.columnize(string);
+
+    const sql = this._alias ? `${ref} as ${formatter.wrap(this._alias)}` : ref;
+
+    this.set(sql, []);
+
+    return super.toSQL(...arguments);
+  }
+}
+
+module.exports = Ref;

node_modules/knex/lib/runner.js

@@ -0,0 +1,261 @@
+const Bluebird = require('bluebird');
+
+let PassThrough;
+
+// The "Runner" constructor takes a "builder" (query, schema, or raw)
+// and runs through each of the query statements, calling any additional
+// "output" method provided alongside the query and bindings.
+function Runner(client, builder) {
+  this.client = client;
+  this.builder = builder;
+  this.queries = [];
+
+  // The "connection" object is set on the runner when
+  // "run" is called.
+  this.connection = void 0;
+}
+
+Object.assign(Runner.prototype, {
+  // "Run" the target, calling "toSQL" on the builder, returning
+  // an object or array of queries to run, each of which are run on
+  // a single connection.
+  run() {
+    const runner = this;
+    return (
+      this.ensureConnection(function(connection) {
+        runner.connection = connection;
+
+        runner.client.emit('start', runner.builder);
+        runner.builder.emit('start', runner.builder);
+        const sql = runner.builder.toSQL();
+
+        if (runner.builder._debug) {
+          runner.client.logger.debug(sql);
+        }
+
+        if (Array.isArray(sql)) {
+          return runner.queryArray(sql);
+        }
+        return runner.query(sql);
+      })
+
+        // If there are any "error" listeners, we fire an error event
+        // and then re-throw the error to be eventually handled by
+        // the promise chain. Useful if you're wrapping in a custom `Promise`.
+        .catch(function(err) {
+          if (runner.builder._events && runner.builder._events.error) {
+            runner.builder.emit('error', err);
+          }
+          throw err;
+        })
+
+        // Fire a single "end" event on the builder when
+        // all queries have successfully completed.
+        .then(function(res) {
+          runner.builder.emit('end');
+          return res;
+        })
+    );
+  },
+
+  // Stream the result set, by passing through to the dialect's streaming
+  // capabilities. If the options are
+  stream(options, handler) {
+    // If we specify stream(handler).then(...
+    if (arguments.length === 1) {
+      if (typeof options === 'function') {
+        handler = options;
+        options = {};
+      }
+    }
+
+    // Determines whether we emit an error or throw here.
+    const hasHandler = typeof handler === 'function';
+
+    // Lazy-load the "PassThrough" dependency.
+    PassThrough = PassThrough || require('stream').PassThrough;
+
+    const runner = this;
+    const stream = new PassThrough({ objectMode: true });
+
+    let hasConnection = false;
+    const promise = this.ensureConnection(function(connection) {
+      hasConnection = true;
+      runner.connection = connection;
+      try {
+        const sql = runner.builder.toSQL();
+
+        if (Array.isArray(sql) && hasHandler) {
+          throw new Error(
+            'The stream may only be used with a single query statement.'
+          );
+        }
+
+        return runner.client.stream(runner.connection, sql, stream, options);
+      } catch (e) {
+        stream.emit('error', e);
+        throw e;
+      }
+    });
+
+    // If a function is passed to handle the stream, send the stream
+    // there and return the promise, otherwise just return the stream
+    // and the promise will take care of itself.
+    if (hasHandler) {
+      handler(stream);
+      return Bluebird.resolve(promise);
+    }
+
+    // Emit errors on the stream if the error occurred before a connection
+    // could be acquired.
+    // If the connection was acquired, assume the error occurred in the client
+    // code and has already been emitted on the stream. Don't emit it twice.
+    promise.catch(function(err) {
+      if (!hasConnection) stream.emit('error', err);
+    });
+    return stream;
+  },
+
+  // Allow you to pipe the stream to a writable stream.
+  pipe(writable, options) {
+    return this.stream(options).pipe(writable);
+  },
+
+  // "Runs" a query, returning a promise. All queries specified by the builder are guaranteed
+  // to run in sequence, and on the same connection, especially helpful when schema building
+  // and dealing with foreign key constraints, etc.
+  query: async function(obj) {
+    const { __knexUid, __knexTxId } = this.connection;
+
+    this.builder.emit('query', Object.assign({ __knexUid, __knexTxId }, obj));
+
+    const runner = this;
+    let queryPromise = this.client.query(this.connection, obj);
+
+    if (obj.timeout) {
+      queryPromise = queryPromise.timeout(obj.timeout);
+    }
+
+    // Await the return value of client.processResponse; in the case of sqlite3's
+    // dropColumn()/renameColumn(), it will be a Promise for the transaction
+    // containing the complete rename procedure.
+    return queryPromise
+      .then((resp) => this.client.processResponse(resp, runner))
+      .then((processedResponse) => {
+        const queryContext = this.builder.queryContext();
+        const postProcessedResponse = this.client.postProcessResponse(
+          processedResponse,
+          queryContext
+        );
+
+        this.builder.emit(
+          'query-response',
+          postProcessedResponse,
+          Object.assign({ __knexUid: this.connection.__knexUid }, obj),
+          this.builder
+        );
+
+        this.client.emit(
+          'query-response',
+          postProcessedResponse,
+          Object.assign({ __knexUid: this.connection.__knexUid }, obj),
+          this.builder
+        );
+
+        return postProcessedResponse;
+      })
+      .catch(Bluebird.TimeoutError, (error) => {
+        const { timeout, sql, bindings } = obj;
+
+        let cancelQuery;
+        if (obj.cancelOnTimeout) {
+          cancelQuery = this.client.cancelQuery(this.connection);
+        } else {
+          // If we don't cancel the query, we need to mark the connection as disposed so that
+          // it gets destroyed by the pool and is never used again. If we don't do this and
+          // return the connection to the pool, it will be useless until the current operation
+          // that timed out, finally finishes.
+          this.connection.__knex__disposed = error;
+          cancelQuery = Bluebird.resolve();
+        }
+
+        return cancelQuery
+          .catch((cancelError) => {
+            // If the cancellation failed, we need to mark the connection as disposed so that
+            // it gets destroyed by the pool and is never used again. If we don't do this and
+            // return the connection to the pool, it will be useless until the current operation
+            // that timed out, finally finishes.
+            this.connection.__knex__disposed = error;
+
+            // cancellation failed
+            throw Object.assign(cancelError, {
+              message: `After query timeout of ${timeout}ms exceeded, cancelling of query failed.`,
+              sql,
+              bindings,
+              timeout,
+            });
+          })
+          .then(() => {
+            // cancellation succeeded, rethrow timeout error
+            throw Object.assign(error, {
+              message: `Defined query timeout of ${timeout}ms exceeded when running query.`,
+              sql,
+              bindings,
+              timeout,
+            });
+          });
+      })
+      .catch((error) => {
+        this.builder.emit(
+          'query-error',
+          error,
+          Object.assign({ __knexUid: this.connection.__knexUid }, obj)
+        );
+        throw error;
+      });
+  },
+
+  // In the case of the "schema builder" we call `queryArray`, which runs each
+  // of the queries in sequence.
+  async queryArray(queries) {
+    if (queries.length === 1) {
+      return this.query(queries[0]);
+    }
+
+    const results = [];
+    for (const query of queries) {
+      results.push(await this.query(query));
+    }
+    return results;
+  },
+
+  // Check whether there's a transaction flag, and that it has a connection.
+  async ensureConnection(cb) {
+    // Use override from a builder if passed
+    if (this.builder._connection) {
+      return cb(this.builder._connection);
+    }
+
+    if (this.connection) {
+      return cb(this.connection);
+    }
+    return this.client
+      .acquireConnection()
+      .catch(Bluebird.TimeoutError, (error) => {
+        if (this.builder) {
+          error.sql = this.builder.sql;
+          error.bindings = this.builder.bindings;
+        }
+        throw error;
+      })
+      .then(async (connection) => {
+        try {
+          return await cb(connection);
+        } finally {
+          await this.client.releaseConnection(this.connection);
+        }
+      });
+  },
+});
+
+module.exports = Runner;

node_modules/knex/lib/schema/builder.js

@@ -0,0 +1,85 @@
+const inherits = require('inherits');
+const { EventEmitter } = require('events');
+const { each, toArray } = require('lodash');
+const { addQueryContext } = require('../helpers');
+const saveAsyncStack = require('../util/save-async-stack');
+
+// Constructor for the builder instance, typically called from
+// `knex.builder`, accepting the current `knex` instance,
+// and pulling out the `client` and `grammar` from the current
+// knex instance.
+function SchemaBuilder(client) {
+  this.client = client;
+  this._sequence = [];
+
+  if (client.config) {
+    this._debug = client.config.debug;
+    saveAsyncStack(this, 4);
+  }
+}
+
+inherits(SchemaBuilder, EventEmitter);
+
+// Each of the schema builder methods just add to the
+// "_sequence" array for consistency.
+each(
+  [
+    'createTable',
+    'createTableIfNotExists',
+    'createSchema',
+    'createSchemaIfNotExists',
+    'dropSchema',
+    'dropSchemaIfExists',
+    'createExtension',
+    'createExtensionIfNotExists',
+    'dropExtension',
+    'dropExtensionIfExists',
+    'table',
+    'alterTable',
+    'hasTable',
+    'hasColumn',
+    'dropTable',
+    'renameTable',
+    'dropTableIfExists',
+    'raw',
+  ],
+  function(method) {
+    SchemaBuilder.prototype[method] = function() {
+      if (method === 'createTableIfNotExists') {
+        this.client.logger.warn(
+          [
+            'Use async .hasTable to check if table exists and then use plain .createTable. Since ',
+            '.createTableIfNotExists actually just generates plain "CREATE TABLE IF NOT EXIST..." ',
+            'query it will not work correctly if there are any alter table queries generated for ',
+            'columns afterwards. To not break old migrations this function is left untouched for now',
+            ', but it should not be used when writing new code and it is removed from documentation.',
+          ].join('')
+        );
+      }
+      if (method === 'table') method = 'alterTable';
+      this._sequence.push({
+        method,
+        args: toArray(arguments),
+      });
+      return this;
+    };
+  }
+);
+
+require('../interface')(SchemaBuilder);
+addQueryContext(SchemaBuilder);
+
+SchemaBuilder.prototype.withSchema = function(schemaName) {
+  this._schema = schemaName;
+  return this;
+};
+
+SchemaBuilder.prototype.toString = function() {
+  return this.toQuery();
+};
+
+SchemaBuilder.prototype.toSQL = function() {
+  return this.client.schemaCompiler(this).toSQL();
+};
+
+module.exports = SchemaBuilder;

node_modules/knex/lib/schema/columnbuilder.js

@@ -0,0 +1,116 @@
+const { extend, each, toArray } = require('lodash');
+const { addQueryContext } = require('../helpers');
+
+// The chainable interface off the original "column" method.
+function ColumnBuilder(client, tableBuilder, type, args) {
+  this.client = client;
+  this._method = 'add';
+  this._single = {};
+  this._modifiers = {};
+  this._statements = [];
+  this._type = columnAlias[type] || type;
+  this._args = args;
+  this._tableBuilder = tableBuilder;
+
+  // If we're altering the table, extend the object
+  // with the available "alter" methods.
+  if (tableBuilder._method === 'alter') {
+    extend(this, AlterMethods);
+  }
+}
+
+// All of the modifier methods that can be used to modify the current query.
+const modifiers = [
+  'default',
+  'defaultsTo',
+  'defaultTo',
+  'unsigned',
+  'nullable',
+  'first',
+  'after',
+  'comment',
+  'collate',
+];
+
+// Aliases for convenience.
+const aliasMethod = {
+  default: 'defaultTo',
+  defaultsTo: 'defaultTo',
+};
+
+// If we call any of the modifiers (index or otherwise) on the chainable, we pretend
+// as though we're calling `table.method(column)` directly.
+each(modifiers, function(method) {
+  const key = aliasMethod[method] || method;
+  ColumnBuilder.prototype[method] = function() {
+    this._modifiers[key] = toArray(arguments);
+    return this;
+  };
+});
+
+addQueryContext(ColumnBuilder);
+
+ColumnBuilder.prototype.notNull = ColumnBuilder.prototype.notNullable = function notNullable() {
+  return this.nullable(false);
+};
+
+each(['index', 'primary', 'unique'], function(method) {
+  ColumnBuilder.prototype[method] = function() {
+    if (this._type.toLowerCase().indexOf('increments') === -1) {
+      this._tableBuilder[method].apply(
+        this._tableBuilder,
+        [this._args[0]].concat(toArray(arguments))
+      );
+    }
+    return this;
+  };
+});
+
+// Specify that the current column "references" a column,
+// which may be tableName.column or just "column"
+ColumnBuilder.prototype.references = function(value) {
+  return this._tableBuilder.foreign
+    .call(this._tableBuilder, this._args[0], undefined, this)
+    ._columnBuilder(this)
+    .references(value);
+};
+
+const AlterMethods = {};
+
+// Specify that the column is to be dropped. This takes precedence
+// over all other rules for the column.
+AlterMethods.drop = function() {
+  this._single.drop = true;
+
+  return this;
+};
+
+// Specify the "type" that we're looking to set the
+// Knex takes no responsibility for any data-loss that may
+// occur when changing data types.
+AlterMethods.alterType = function(type) {
+  this._statements.push({
+    grouping: 'alterType',
+    value: type,
+  });
+
+  return this;
+};
+
+// Set column method to alter (default is add).
+AlterMethods.alter = function() {
+  this._method = 'alter';
+
+  return this;
+};
+
+// Alias a few methods for clarity when processing.
+const columnAlias = {
+  float: 'floating',
+  enum: 'enu',
+  boolean: 'bool',
+  string: 'varchar',
+  bigint: 'bigInteger',
+};
+
+module.exports = ColumnBuilder;

node_modules/knex/lib/schema/columncompiler.js

@@ -0,0 +1,173 @@
+// Column Compiler
+// Used for designating column definitions
+// during the table "create" / "alter" statements.
+// -------
+const Raw = require('../raw');
+const helpers = require('./helpers');
+const { groupBy, first, tail, has, isObject } = require('lodash');
+
+function ColumnCompiler(client, tableCompiler, columnBuilder) {
+  this.client = client;
+  this.tableCompiler = tableCompiler;
+  this.columnBuilder = columnBuilder;
+  this._commonBuilder = this.columnBuilder;
+  this.args = columnBuilder._args;
+  this.type = columnBuilder._type.toLowerCase();
+  this.grouped = groupBy(columnBuilder._statements, 'grouping');
+  this.modified = columnBuilder._modifiers;
+  this.isIncrements = this.type.indexOf('increments') !== -1;
+  this.formatter = client.formatter(columnBuilder);
+  this.sequence = [];
+  this.modifiers = [];
+}
+
+ColumnCompiler.prototype.pushQuery = helpers.pushQuery;
+
+ColumnCompiler.prototype.pushAdditional = helpers.pushAdditional;
+
+ColumnCompiler.prototype.unshiftQuery = helpers.unshiftQuery;
+
+ColumnCompiler.prototype._defaultMap = {
+  columnName: function() {
+    if (!this.isIncrements) {
+      throw new Error(
+        `You did not specify a column name for the ${this.type} column.`
+      );
+    }
+    return 'id';
+  },
+};
+
+ColumnCompiler.prototype.defaults = function(label) {
+  if (Object.prototype.hasOwnProperty.call(this._defaultMap, label)) {
+    return this._defaultMap[label].bind(this)();
+  } else {
+    throw new Error(
+      `There is no default for the specified identifier ${label}`
+    );
+  }
+};
+
+// To convert to sql, we first go through and build the
+// column as it would be in the insert statement
+ColumnCompiler.prototype.toSQL = function() {
+  this.pushQuery(this.compileColumn());
+  if (this.sequence.additional) {
+    this.sequence = this.sequence.concat(this.sequence.additional);
+  }
+  return this.sequence;
+};
+
+// Compiles a column.
+ColumnCompiler.prototype.compileColumn = function() {
+  return (
+    this.formatter.wrap(this.getColumnName()) +
+    ' ' +
+    this.getColumnType() +
+    this.getModifiers()
+  );
+};
+
+// Assumes the autoincrementing key is named `id` if not otherwise specified.
+ColumnCompiler.prototype.getColumnName = function() {
+  const value = first(this.args);
+  return value || this.defaults('columnName');
+};
+
+ColumnCompiler.prototype.getColumnType = function() {
+  const type = this[this.type];
+  return typeof type === 'function' ? type.apply(this, tail(this.args)) : type;
+};
+
+ColumnCompiler.prototype.getModifiers = function() {
+  const modifiers = [];
+
+  for (let i = 0, l = this.modifiers.length; i < l; i++) {
+    const modifier = this.modifiers[i];
+
+    //Cannot allow 'nullable' modifiers on increments types
+    if (!this.isIncrements || (this.isIncrements && modifier === 'comment')) {
+      if (has(this.modified, modifier)) {
+        const val = this[modifier].apply(this, this.modified[modifier]);
+        if (val) modifiers.push(val);
+      }
+    }
+  }
+
+  return modifiers.length > 0 ? ` ${modifiers.join(' ')}` : '';
+};
+
+// Types
+// ------
+
+ColumnCompiler.prototype.increments =
+  'integer not null primary key autoincrement';
+ColumnCompiler.prototype.bigincrements =
+  'integer not null primary key autoincrement';
+ColumnCompiler.prototype.integer = ColumnCompiler.prototype.smallint = ColumnCompiler.prototype.mediumint =
+  'integer';
+ColumnCompiler.prototype.biginteger = 'bigint';
+ColumnCompiler.prototype.varchar = function(length) {
+  return `varchar(${this._num(length, 255)})`;
+};
+ColumnCompiler.prototype.text = 'text';
+ColumnCompiler.prototype.tinyint = 'tinyint';
+ColumnCompiler.prototype.floating = function(precision, scale) {
+  return `float(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
+};
+ColumnCompiler.prototype.decimal = function(precision, scale) {
+  if (precision === null) {
+    throw new Error(
+      'Specifying no precision on decimal columns is not supported for that SQL dialect.'
+    );
+  }
+  return `decimal(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
+};
+ColumnCompiler.prototype.binary = 'blob';
+ColumnCompiler.prototype.bool = 'boolean';
+ColumnCompiler.prototype.date = 'date';
+ColumnCompiler.prototype.datetime = 'datetime';
+ColumnCompiler.prototype.time = 'time';
+ColumnCompiler.prototype.timestamp = 'timestamp';
+ColumnCompiler.prototype.enu = 'varchar';
+
+ColumnCompiler.prototype.bit = ColumnCompiler.prototype.json = 'text';
+
+ColumnCompiler.prototype.uuid = 'char(36)';
+ColumnCompiler.prototype.specifictype = (type) => type;
+
+// Modifiers
+// -------
+
+ColumnCompiler.prototype.nullable = (nullable) =>
+  nullable === false ? 'not null' : 'null';
+ColumnCompiler.prototype.notNullable = function() {
+  return this.nullable(false);
+};
+ColumnCompiler.prototype.defaultTo = function(value) {
+  if (value === void 0) {
+    return '';
+  } else if (value === null) {
+    value = 'null';
+  } else if (value instanceof Raw) {
+    value = value.toQuery();
+  } else if (this.type === 'bool') {
+    if (value === 'false') value = 0;
+    value = `'${value ? 1 : 0}'`;
+  } else if (
+    (this.type === 'json' || this.type === 'jsonb') &&
+    isObject(value)
+  ) {
+    value = `'${JSON.stringify(value)}'`;
+  } else {
+    value = `'${value}'`;
+  }
+  return `default ${value}`;
+};
+ColumnCompiler.prototype._num = function(val, fallback) {
+  if (val === undefined || val === null) return fallback;
+  const number = parseInt(val, 10);
+  return isNaN(number) ? fallback : number;
+};
+
+module.exports = ColumnCompiler;

node_modules/knex/lib/schema/compiler.js

@@ -0,0 +1,103 @@
+const { pushQuery, pushAdditional, unshiftQuery } = require('./helpers');
+
+const { isUndefined } = require('lodash');
+
+// The "SchemaCompiler" takes all of the query statements which have been
+// gathered in the "SchemaBuilder" and turns them into an array of
+// properly formatted / bound query strings.
+function SchemaCompiler(client, builder) {
+  this.builder = builder;
+  this._commonBuilder = this.builder;
+  this.client = client;
+  this.schema = builder._schema;
+  this.formatter = client.formatter(builder);
+  this.sequence = [];
+}
+
+function throwOnlyPGError(operationName) {
+  throw new Error(
+    `${operationName} is not supported for this dialect (only PostgreSQL supports it currently).`
+  );
+}
+
+Object.assign(SchemaCompiler.prototype, {
+  pushQuery: pushQuery,
+
+  pushAdditional: pushAdditional,
+
+  unshiftQuery: unshiftQuery,
+
+  createTable: buildTable('create'),
+
+  createTableIfNotExists: buildTable('createIfNot'),
+
+  createSchema: () => {
+    throwOnlyPGError('createSchema');
+  },
+  createSchemaIfNotExists: () => {
+    throwOnlyPGError('createSchemaIfNotExists');
+  },
+  dropSchema: () => {
+    throwOnlyPGError('dropSchema');
+  },
+  dropSchemaIfExists: () => {
+    throwOnlyPGError('dropSchemaIfExists');
+  },
+
+  alterTable: buildTable('alter'),
+
+  dropTablePrefix: 'drop table ',
+
+  dropTable(tableName) {
+    this.pushQuery(
+      this.dropTablePrefix +
+        this.formatter.wrap(prefixedTableName(this.schema, tableName))
+    );
+  },
+
+  dropTableIfExists(tableName) {
+    this.pushQuery(
+      this.dropTablePrefix +
+        'if exists ' +
+        this.formatter.wrap(prefixedTableName(this.schema, tableName))
+    );
+  },
+
+  raw(sql, bindings) {
+    this.sequence.push(this.client.raw(sql, bindings).toSQL());
+  },
+
+  toSQL() {
+    const sequence = this.builder._sequence;
+    for (let i = 0, l = sequence.length; i < l; i++) {
+      const query = sequence[i];
+      this[query.method].apply(this, query.args);
+    }
+    return this.sequence;
+  },
+});
+
+function buildTable(type) {
+  return function(tableName, fn) {
+    const builder = this.client.tableBuilder(type, tableName, fn);
+
+    // pass queryContext down to tableBuilder but do not overwrite it if already set
+    const queryContext = this.builder.queryContext();
+    if (!isUndefined(queryContext) && isUndefined(builder.queryContext())) {
+      builder.queryContext(queryContext);
+    }
+
+    builder.setSchema(this.schema);
+    const sql = builder.toSQL();
+
+    for (let i = 0, l = sql.length; i < l; i++) {
+      this.sequence.push(sql[i]);
+    }
+  };
+}
+
+function prefixedTableName(prefix, table) {
+  return prefix ? `${prefix}.${table}` : table;
+}
+
+module.exports = SchemaCompiler;

node_modules/knex/lib/schema/helpers.js

@@ -0,0 +1,50 @@
+const { isString, tail } = require('lodash');
+
+// Push a new query onto the compiled "sequence" stack,
+// creating a new formatter, returning the compiler.
+function pushQuery(query) {
+  if (!query) return;
+  if (isString(query)) {
+    query = { sql: query };
+  }
+  if (!query.bindings) {
+    query.bindings = this.formatter.bindings;
+  }
+  this.sequence.push(query);
+
+  this.formatter = this.client.formatter(this._commonBuilder);
+}
+
+// Used in cases where we need to push some additional column specific statements.
+function pushAdditional(fn) {
+  const child = new this.constructor(
+    this.client,
+    this.tableCompiler,
+    this.columnBuilder
+  );
+  fn.call(child, tail(arguments));
+  this.sequence.additional = (this.sequence.additional || []).concat(
+    child.sequence
+  );
+}
+
+// Unshift a new query onto the compiled "sequence" stack,
+// creating a new formatter, returning the compiler.
+function unshiftQuery(query) {
+  if (!query) return;
+  if (isString(query)) {
+    query = { sql: query };
+  }
+  if (!query.bindings) {
+    query.bindings = this.formatter.bindings;
+  }
+  this.sequence.unshift(query);
+
+  this.formatter = this.client.formatter(this._commonBuilder);
+}
+
+module.exports = {
+  pushAdditional,
+  pushQuery,
+  unshiftQuery,
+};

node_modules/knex/lib/schema/tablebuilder.js

@@ -0,0 +1,285 @@
+// TableBuilder
+
+// Takes the function passed to the "createTable" or "table/editTable"
+// functions and calls it with the "TableBuilder" as both the context and
+// the first argument. Inside this function we can specify what happens to the
+// method, pushing everything we want to do onto the "allStatements" array,
+// which is then compiled into sql.
+// ------
+const { extend, each, toArray, isString, isFunction } = require('lodash');
+const helpers = require('../helpers');
+
+function TableBuilder(client, method, tableName, fn) {
+  this.client = client;
+  this._fn = fn;
+  this._method = method;
+  this._schemaName = undefined;
+  this._tableName = tableName;
+  this._statements = [];
+  this._single = {};
+
+  if (!isFunction(this._fn)) {
+    throw new TypeError(
+      'A callback function must be supplied to calls against `.createTable` ' +
+        'and `.table`'
+    );
+  }
+}
+
+TableBuilder.prototype.setSchema = function(schemaName) {
+  this._schemaName = schemaName;
+};
+
+// Convert the current tableBuilder object "toSQL"
+// giving us additional methods if we're altering
+// rather than creating the table.
+TableBuilder.prototype.toSQL = function() {
+  if (this._method === 'alter') {
+    extend(this, AlterMethods);
+  }
+  this._fn.call(this, this);
+  return this.client.tableCompiler(this).toSQL();
+};
+
+each(
+  [
+    // Each of the index methods can be called individually, with the
+    // column name to be used, e.g. table.unique('column').
+    'index',
+    'primary',
+    'unique',
+
+    // Key specific
+    'dropPrimary',
+    'dropUnique',
+    'dropIndex',
+    'dropForeign',
+  ],
+  function(method) {
+    TableBuilder.prototype[method] = function() {
+      this._statements.push({
+        grouping: 'alterTable',
+        method,
+        args: toArray(arguments),
+      });
+      return this;
+    };
+  }
+);
+
+// Warn for dialect-specific table methods, since that's the
+// only time these are supported.
+const specialMethods = {
+  mysql: ['engine', 'charset', 'collate'],
+  postgresql: ['inherits'],
+};
+each(specialMethods, function(methods, dialect) {
+  each(methods, function(method) {
+    TableBuilder.prototype[method] = function(value) {
+      if (this.client.dialect !== dialect) {
+        throw new Error(
+          `Knex only supports ${method} statement with ${dialect}.`
+        );
+      }
+      if (this._method === 'alter') {
+        throw new Error(
+          `Knex does not support altering the ${method} outside of create ` +
+            `table, please use knex.raw statement.`
+        );
+      }
+      this._single[method] = value;
+    };
+  });
+});
+
+helpers.addQueryContext(TableBuilder);
+
+// Each of the column types that we can add, we create a new ColumnBuilder
+// instance and push it onto the statements array.
+const columnTypes = [
+  // Numeric
+  'tinyint',
+  'smallint',
+  'mediumint',
+  'int',
+  'bigint',
+  'decimal',
+  'float',
+  'double',
+  'real',
+  'bit',
+  'boolean',
+  'serial',
+
+  // Date / Time
+  'date',
+  'datetime',
+  'timestamp',
+  'time',
+  'year',
+
+  // String
+  'char',
+  'varchar',
+  'tinytext',
+  'tinyText',
+  'text',
+  'mediumtext',
+  'mediumText',
+  'longtext',
+  'longText',
+  'binary',
+  'varbinary',
+  'tinyblob',
+  'tinyBlob',
+  'mediumblob',
+  'mediumBlob',
+  'blob',
+  'longblob',
+  'longBlob',
+  'enum',
+  'set',
+
+  // Increments, Aliases, and Additional
+  'bool',
+  'dateTime',
+  'increments',
+  'bigincrements',
+  'bigIncrements',
+  'integer',
+  'biginteger',
+  'bigInteger',
+  'string',
+  'json',
+  'jsonb',
+  'uuid',
+  'enu',
+  'specificType',
+];
+
+// For each of the column methods, create a new "ColumnBuilder" interface,
+// push it onto the "allStatements" stack, and then return the interface,
+// with which we can add indexes, etc.
+each(columnTypes, function(type) {
+  TableBuilder.prototype[type] = function() {
+    const args = toArray(arguments);
+    const builder = this.client.columnBuilder(this, type, args);
+    this._statements.push({
+      grouping: 'columns',
+      builder,
+    });
+    return builder;
+  };
+});
+
+// The "timestamps" call is really just sets the `created_at` and `updated_at` columns.
+TableBuilder.prototype.timestamps = function timestamps() {
+  const method = arguments[0] === true ? 'timestamp' : 'datetime';
+  const createdAt = this[method]('created_at');
+  const updatedAt = this[method]('updated_at');
+  if (arguments[1] === true) {
+    const now = this.client.raw('CURRENT_TIMESTAMP');
+    createdAt.notNullable().defaultTo(now);
+    updatedAt.notNullable().defaultTo(now);
+  }
+  return;
+};
+
+// Set the comment value for a table, they're only allowed to be called
+// once per table.
+TableBuilder.prototype.comment = function(value) {
+  if (typeof value !== 'string') {
+    throw new TypeError('Table comment must be string');
+  }
+  this._single.comment = value;
+};
+
+// Set a foreign key on the table, calling
+// `table.foreign('column_name').references('column').on('table').onDelete()...
+// Also called from the ColumnBuilder context when chaining.
+TableBuilder.prototype.foreign = function(column, keyName) {
+  const foreignData = { column: column, keyName: keyName };
+  this._statements.push({
+    grouping: 'alterTable',
+    method: 'foreign',
+    args: [foreignData],
+  });
+  let returnObj = {
+    references(tableColumn) {
+      let pieces;
+      if (isString(tableColumn)) {
+        pieces = tableColumn.split('.');
+      }
+      if (!pieces || pieces.length === 1) {
+        foreignData.references = pieces ? pieces[0] : tableColumn;
+        return {
+          on(tableName) {
+            if (typeof tableName !== 'string') {
+              throw new TypeError(
+                `Expected tableName to be a string, got: ${typeof tableName}`
+              );
+            }
+            foreignData.inTable = tableName;
+            return returnObj;
+          },
+          inTable() {
+            return this.on.apply(this, arguments);
+          },
+        };
+      }
+      foreignData.inTable = pieces[0];
+      foreignData.references = pieces[1];
+      return returnObj;
+    },
+    withKeyName(keyName) {
+      foreignData.keyName = keyName;
+      return returnObj;
+    },
+    onUpdate(statement) {
+      foreignData.onUpdate = statement;
+      return returnObj;
+    },
+    onDelete(statement) {
+      foreignData.onDelete = statement;
+      return returnObj;
+    },
+    _columnBuilder(builder) {
+      extend(builder, returnObj);
+      returnObj = builder;
+      return builder;
+    },
+  };
+  return returnObj;
+};
+
+const AlterMethods = {
+  // Renames the current column `from` the current
+  // TODO: this.column(from).rename(to)
+  renameColumn(from, to) {
+    this._statements.push({
+      grouping: 'alterTable',
+      method: 'renameColumn',
+      args: [from, to],
+    });
+    return this;
+  },
+
+  dropTimestamps() {
+    return this.dropColumns(['created_at', 'updated_at']);
+  },
+
+  // TODO: changeType
+};
+
+// Drop a column from the current table.
+// TODO: Enable this.column(columnName).drop();
+AlterMethods.dropColumn = AlterMethods.dropColumns = function() {
+  this._statements.push({
+    grouping: 'alterTable',
+    method: 'dropColumn',
+    args: toArray(arguments),
+  });
+  return this;
+};
+
+module.exports = TableBuilder;

node_modules/knex/lib/schema/tablecompiler.js

@@ -0,0 +1,306 @@
+/* eslint max-len:0 */
+
+// Table Compiler
+// -------
+const { pushAdditional, pushQuery, unshiftQuery } = require('./helpers');
+const helpers = require('../helpers');
+const {
+  groupBy,
+  reduce,
+  map,
+  first,
+  tail,
+  isEmpty,
+  indexOf,
+  isArray,
+  isUndefined,
+} = require('lodash');
+
+function TableCompiler(client, tableBuilder) {
+  this.client = client;
+  this.tableBuilder = tableBuilder;
+  this._commonBuilder = this.tableBuilder;
+  this.method = tableBuilder._method;
+  this.schemaNameRaw = tableBuilder._schemaName;
+  this.tableNameRaw = tableBuilder._tableName;
+  this.single = tableBuilder._single;
+  this.grouped = groupBy(tableBuilder._statements, 'grouping');
+  this.formatter = client.formatter(tableBuilder);
+  this.sequence = [];
+  this._formatting = client.config && client.config.formatting;
+}
+
+TableCompiler.prototype.pushQuery = pushQuery;
+
+TableCompiler.prototype.pushAdditional = pushAdditional;
+
+TableCompiler.prototype.unshiftQuery = unshiftQuery;
+
+// Convert the tableCompiler toSQL
+TableCompiler.prototype.toSQL = function() {
+  this[this.method]();
+  return this.sequence;
+};
+
+TableCompiler.prototype.lowerCase = true;
+
+// Column Compilation
+// -------
+
+// If this is a table "creation", we need to first run through all
+// of the columns to build them into a single string,
+// and then run through anything else and push it to the query sequence.
+TableCompiler.prototype.createAlterTableMethods = null;
+TableCompiler.prototype.create = function(ifNot) {
+  const columnBuilders = this.getColumns();
+  const columns = columnBuilders.map((col) => col.toSQL());
+  const columnTypes = this.getColumnTypes(columns);
+  if (this.createAlterTableMethods) {
+    this.alterTableForCreate(columnTypes);
+  }
+  this.createQuery(columnTypes, ifNot);
+  this.columnQueries(columns);
+  delete this.single.comment;
+  this.alterTable();
+};
+
+// Only create the table if it doesn't exist.
+TableCompiler.prototype.createIfNot = function() {
+  this.create(true);
+};
+
+// If we're altering the table, we need to one-by-one
+// go through and handle each of the queries associated
+// with altering the table's schema.
+TableCompiler.prototype.alter = function() {
+  const addColBuilders = this.getColumns();
+  const addColumns = addColBuilders.map((col) => col.toSQL());
+  const alterColBuilders = this.getColumns('alter');
+  const alterColumns = alterColBuilders.map((col) => col.toSQL());
+  const addColumnTypes = this.getColumnTypes(addColumns);
+  const alterColumnTypes = this.getColumnTypes(alterColumns);
+
+  this.addColumns(addColumnTypes);
+  this.alterColumns(alterColumnTypes, alterColBuilders);
+  this.columnQueries(addColumns);
+  this.columnQueries(alterColumns);
+  this.alterTable();
+};
+
+TableCompiler.prototype.foreign = function(foreignData) {
+  if (foreignData.inTable && foreignData.references) {
+    const keyName = foreignData.keyName
+      ? this.formatter.wrap(foreignData.keyName)
+      : this._indexCommand('foreign', this.tableNameRaw, foreignData.column);
+    const column = this.formatter.columnize(foreignData.column);
+    const references = this.formatter.columnize(foreignData.references);
+    const inTable = this.formatter.wrap(foreignData.inTable);
+    const onUpdate = foreignData.onUpdate
+      ? (this.lowerCase ? ' on update ' : ' ON UPDATE ') + foreignData.onUpdate
+      : '';
+    const onDelete = foreignData.onDelete
+      ? (this.lowerCase ? ' on delete ' : ' ON DELETE ') + foreignData.onDelete
+      : '';
+    if (this.lowerCase) {
+      this.pushQuery(
+        (!this.forCreate ? `alter table ${this.tableName()} add ` : '') +
+          'constraint ' +
+          keyName +
+          ' ' +
+          'foreign key (' +
+          column +
+          ') references ' +
+          inTable +
+          ' (' +
+          references +
+          ')' +
+          onUpdate +
+          onDelete
+      );
+    } else {
+      this.pushQuery(
+        (!this.forCreate ? `ALTER TABLE ${this.tableName()} ADD ` : '') +
+          'CONSTRAINT ' +
+          keyName +
+          ' ' +
+          'FOREIGN KEY (' +
+          column +
+          ') REFERENCES ' +
+          inTable +
+          ' (' +
+          references +
+          ')' +
+          onUpdate +
+          onDelete
+      );
+    }
+  }
+};
+
+// Get all of the column sql & bindings individually for building the table queries.
+TableCompiler.prototype.getColumnTypes = (columns) =>
+  reduce(
+    map(columns, first),
+    function(memo, column) {
+      memo.sql.push(column.sql);
+      memo.bindings.concat(column.bindings);
+      return memo;
+    },
+    { sql: [], bindings: [] }
+  );
+
+// Adds all of the additional queries from the "column"
+TableCompiler.prototype.columnQueries = function(columns) {
+  const queries = reduce(
+    map(columns, tail),
+    function(memo, column) {
+      if (!isEmpty(column)) return memo.concat(column);
+      return memo;
+    },
+    []
+  );
+  for (const q of queries) {
+    this.pushQuery(q);
+  }
+};
+
+// Add a new column.
+TableCompiler.prototype.addColumnsPrefix = 'add column ';
+
+// All of the columns to "add" for the query
+TableCompiler.prototype.addColumns = function(columns, prefix) {
+  prefix = prefix || this.addColumnsPrefix;
+
+  if (columns.sql.length > 0) {
+    const columnSql = map(columns.sql, (column) => {
+      return prefix + column;
+    });
+    this.pushQuery({
+      sql:
+        (this.lowerCase ? 'alter table ' : 'ALTER TABLE ') +
+        this.tableName() +
+        ' ' +
+        columnSql.join(', '),
+      bindings: columns.bindings,
+    });
+  }
+};
+
+// Alter column
+TableCompiler.prototype.alterColumnsPrefix = 'alter column ';
+
+TableCompiler.prototype.alterColumns = function(columns, colBuilders) {
+  if (columns.sql.length > 0) {
+    this.addColumns(columns, this.alterColumnsPrefix, colBuilders);
+  }
+};
+
+// Compile the columns as needed for the current create or alter table
+TableCompiler.prototype.getColumns = function(method) {
+  const columns = this.grouped.columns || [];
+  method = method || 'add';
+
+  const queryContext = this.tableBuilder.queryContext();
+
+  return columns
+    .filter((column) => column.builder._method === method)
+    .map((column) => {
+      // pass queryContext down to columnBuilder but do not overwrite it if already set
+      if (
+        !isUndefined(queryContext) &&
+        isUndefined(column.builder.queryContext())
+      ) {
+        column.builder.queryContext(queryContext);
+      }
+      return this.client.columnCompiler(this, column.builder);
+    });
+};
+
+TableCompiler.prototype.tableName = function() {
+  const name = this.schemaNameRaw
+    ? `${this.schemaNameRaw}.${this.tableNameRaw}`
+    : this.tableNameRaw;
+
+  return this.formatter.wrap(name);
+};
+
+// Generate all of the alter column statements necessary for the query.
+TableCompiler.prototype.alterTable = function() {
+  const alterTable = this.grouped.alterTable || [];
+  for (let i = 0, l = alterTable.length; i < l; i++) {
+    const statement = alterTable[i];
+    if (this[statement.method]) {
+      this[statement.method].apply(this, statement.args);
+    } else {
+      this.client.logger.error(`Debug: ${statement.method} does not exist`);
+    }
+  }
+  for (const item in this.single) {
+    if (typeof this[item] === 'function') this[item](this.single[item]);
+  }
+};
+
+TableCompiler.prototype.alterTableForCreate = function(columnTypes) {
+  this.forCreate = true;
+  const savedSequence = this.sequence;
+  const alterTable = this.grouped.alterTable || [];
+  this.grouped.alterTable = [];
+  for (let i = 0, l = alterTable.length; i < l; i++) {
+    const statement = alterTable[i];
+    if (indexOf(this.createAlterTableMethods, statement.method) < 0) {
+      this.grouped.alterTable.push(statement);
+      continue;
+    }
+    if (this[statement.method]) {
+      this.sequence = [];
+      this[statement.method].apply(this, statement.args);
+      columnTypes.sql.push(this.sequence[0].sql);
+    } else {
+      this.client.logger.error(`Debug: ${statement.method} does not exist`);
+    }
+  }
+  this.sequence = savedSequence;
+  this.forCreate = false;
+};
+
+// Drop the index on the current table.
+TableCompiler.prototype.dropIndex = function(value) {
+  this.pushQuery(`drop index${value}`);
+};
+
+// Drop the unique
+TableCompiler.prototype.dropUnique = TableCompiler.prototype.dropForeign = function() {
+  throw new Error('Method implemented in the dialect driver');
+};
+
+TableCompiler.prototype.dropColumnPrefix = 'drop column ';
+TableCompiler.prototype.dropColumn = function() {
+  const columns = helpers.normalizeArr.apply(null, arguments);
+  const drops = map(isArray(columns) ? columns : [columns], (column) => {
+    return this.dropColumnPrefix + this.formatter.wrap(column);
+  });
+  this.pushQuery(
+    (this.lowerCase ? 'alter table ' : 'ALTER TABLE ') +
+      this.tableName() +
+      ' ' +
+      drops.join(', ')
+  );
+};
+
+// If no name was specified for this index, we will create one using a basic
+// convention of the table name, followed by the columns, followed by an
+// index type, such as primary or index, which makes the index unique.
+TableCompiler.prototype._indexCommand = function(type, tableName, columns) {
+  if (!isArray(columns)) columns = columns ? [columns] : [];
+  const table = tableName.replace(/\.|-/g, '_');
+  const indexName = (
+    table +
+    '_' +
+    columns.join('_') +
+    '_' +
+    type
+  ).toLowerCase();
+  return this.formatter.wrap(indexName);
+};
+
+module.exports = TableCompiler;

node_modules/knex/lib/seed/Seeder.js

@@ -0,0 +1,163 @@
+// Seeder
+// -------
+
+const fs = require('fs');
+const path = require('path');
+const { promisify } = require('util');
+const mkdirp = require('mkdirp');
+const { filter, includes, extend } = require('lodash');
+const { writeJsFileUsingTemplate } = require('../util/template');
+
+// The new seeds we're performing, typically called from the `knex.seed`
+// interface on the main `knex` object. Passes the `knex` instance performing
+// the seeds.
+class Seeder {
+  constructor(knex) {
+    this.knex = knex;
+    this.config = this.setConfig(knex.client.config.seeds);
+  }
+
+  // Runs seed files for the given environment.
+  async run(config) {
+    this.config = this.setConfig(config);
+    const all = await this._listAll();
+    const files =
+      config && config.specific
+        ? all.filter((file) => file === config.specific)
+        : all;
+    return this._runSeeds(files);
+  }
+
+  // Creates a new seed file, with a given name.
+  async make(name, config) {
+    this.config = this.setConfig(config);
+    if (!name)
+      throw new Error('A name must be specified for the generated seed');
+    await this._ensureFolder(config);
+    const seedPath = await this._writeNewSeed(name);
+    return seedPath;
+  }
+
+  // Lists all available seed files as a sorted array.
+  async _listAll(config) {
+    this.config = this.setConfig(config);
+    const loadExtensions = this.config.loadExtensions;
+    return promisify(fs.readdir)(this._absoluteConfigDir()).then((seeds) =>
+      filter(seeds, (value) => {
+        const extension = path.extname(value);
+        return includes(loadExtensions, extension);
+      }).sort()
+    );
+  }
+
+  // Ensures a folder for the seeds exist, dependent on the
+  // seed config settings.
+  async _ensureFolder() {
+    const dir = this._absoluteConfigDir();
+    try {
+      await promisify(fs.stat)(dir);
+    } catch (e) {
+      await promisify(mkdirp)(dir);
+    }
+  }
+
+  // Run seed files, in sequence.
+  _runSeeds(seeds) {
+    seeds.forEach((seed) => this._validateSeedStructure(seed));
+    return this._waterfallBatch(seeds);
+  }
+
+  // Validates seed files by requiring and checking for a `seed` function.
+  _validateSeedStructure(name) {
+    const seed = require(path.join(this._absoluteConfigDir(), name));
+    if (typeof seed.seed !== 'function') {
+      throw new Error(`Invalid seed file: ${name} must have a seed function`);
+    }
+    return name;
+  }
+
+  _getStubPath() {
+    return (
+      this.config.stub ||
+      path.join(__dirname, 'stub', this.config.extension + '.stub')
+    );
+  }
+
+  _getNewStubFileName(name) {
+    if (name[0] === '-') name = name.slice(1);
+    return name + '.' + this.config.extension;
+  }
+
+  _getNewStubFilePath(name) {
+    return path.join(this._absoluteConfigDir(), this._getNewStubFileName(name));
+  }
+
+  // Write a new seed to disk, using the config and generated filename,
+  // passing any `variables` given in the config to the template.
+  async _writeNewSeed(name) {
+    const seedPath = this._getNewStubFilePath(name);
+    await writeJsFileUsingTemplate(
+      seedPath,
+      this._getStubPath(),
+      { variable: 'd' },
+      this.config.variables || {}
+    );
+    return seedPath;
+  }
+
+  // Runs a batch of seed files.
+  async _waterfallBatch(seeds) {
+    const { knex } = this;
+    const seedDirectory = this._absoluteConfigDir();
+    const log = [];
+    for (const seedName of seeds) {
+      const seedPath = path.join(seedDirectory, seedName);
+      const seed = require(seedPath);
+      try {
+        await seed.seed(knex);
+        log.push(seedPath);
+      } catch (originalError) {
+        const error = new Error(
+          `Error while executing "${seedPath}" seed: ${originalError.message}`
+        );
+        error.original = originalError;
+        error.stack =
+          error.stack
+            .split('\n')
+            .slice(0, 2)
+            .join('\n') +
+          '\n' +
+          originalError.stack;
+        throw error;
+      }
+    }
+    return [log];
+  }
+
+  _absoluteConfigDir() {
+    return path.resolve(process.cwd(), this.config.directory);
+  }
+
+  setConfig(config) {
+    return extend(
+      {
+        extension: 'js',
+        directory: './seeds',
+        loadExtensions: [
+          '.co',
+          '.coffee',
+          '.eg',
+          '.iced',
+          '.js',
+          '.litcoffee',
+          '.ls',
+          '.ts',
+        ],
+      },
+      this.config || {},
+      config
+    );
+  }
+}
+
+module.exports = Seeder;

node_modules/knex/lib/seed/seed-stub.js

@@ -0,0 +1,13 @@
+// Stub Seed:
+// Used for now in browser builds, where filesystem access isn't
+// available.
+const StubSeed = (module.exports = function() {});
+
+const noSuchMethod = async function() {
+  throw new Error('Seeds are not supported');
+};
+
+StubSeed.prototype = {
+  make: noSuchMethod,
+  run: noSuchMethod,
+};

node_modules/knex/lib/seed/stub/coffee.stub

@@ -0,0 +1,9 @@
+exports.seed = (knex) ->
+  knex('table_name').del()
+  .then () ->
+    # Inserts seed entries
+    knex('table_name').insert([
+      {id: 1, colName: 'rowValue'}
+      {id: 2, colName: 'rowValue2'}
+      {id: 3, colName: 'rowValue3'}
+    ])

node_modules/knex/lib/seed/stub/eg.stub

@@ -0,0 +1,11 @@
+provide: seed
+seed = (knex) ->
+  ;; Deletes ALL existing entries
+  knex(.table_name).del()
+  .then(() ->
+    ;; Inserts seed entries
+    knex(.table_name).insert with [
+      { id = 1, col-name = .row-value-1 }
+      { id = 2, col-name = .row-value-2 }
+      { id = 3, col-name = .row-value-3 }
+    ]

node_modules/knex/lib/seed/stub/js.stub

@@ -0,0 +1,13 @@
+
+exports.seed = function(knex) {
+  // Deletes ALL existing entries
+  return knex('table_name').del()
+    .then(function () {
+      // Inserts seed entries
+      return knex('table_name').insert([
+        {id: 1, colName: 'rowValue1'},
+        {id: 2, colName: 'rowValue2'},
+        {id: 3, colName: 'rowValue3'}
+      ]);
+    });
+};

node_modules/knex/lib/seed/stub/ls.stub

@@ -0,0 +1,11 @@
+exports.seed = (knex) ->
+  # Deletes ALL existing entries
+  knex('table_name').del()
+  .then(() ->
+    # Inserts seed entries
+    knex('table_name').insert([
+      {id: 1, colName: 'rowValue1'},
+      {id: 2, colName: 'rowValue2'},
+      {id: 3, colName: 'rowValue3'}
+    ])
+  )

node_modules/knex/lib/seed/stub/ts.stub

@@ -0,0 +1,14 @@
+import * as Knex from "knex";
+
+export async function seed(knex: Knex): Promise<any> {
+    // Deletes ALL existing entries
+    return knex("table_name").del()
+        .then(() => {
+            // Inserts seed entries
+            return knex("table_name").insert([
+                { id: 1, colName: "rowValue1" },
+                { id: 2, colName: "rowValue2" },
+                { id: 3, colName: "rowValue3" }
+            ]);
+        });
+};

node_modules/knex/lib/transaction.js

@@ -0,0 +1,397 @@
+// Transaction
+// -------
+const Bluebird = require('bluebird');
+const { EventEmitter } = require('events');
+const Debug = require('debug');
+
+const makeKnex = require('./util/make-knex');
+
+const debug = Debug('knex:tx');
+
+const { uniqueId, isUndefined } = require('lodash');
+
+// Acts as a facade for a Promise, keeping the internal state
+// and managing any child transactions.
+class Transaction extends EventEmitter {
+  constructor(client, container, config, outerTx) {
+    super();
+
+    const txid = (this.txid = uniqueId('trx'));
+
+    // If there is no container provided, assume user wants to get instance of transaction and use it directly
+    if (!container) {
+      // Default behaviour for new style of transactions is not to reject on rollback
+      if (!config || isUndefined(config.doNotRejectOnRollback)) {
+        this.doNotRejectOnRollback = true;
+      } else {
+        this.doNotRejectOnRollback = config.doNotRejectOnRollback;
+      }
+
+      this.initPromise = new Promise((resolve, reject) => {
+        this.initRejectFn = reject;
+        container = (transactor) => {
+          resolve(transactor);
+        };
+      });
+    } else {
+      // Default behaviour for old style of transactions is to reject on rollback
+      if (!config || isUndefined(config.doNotRejectOnRollback)) {
+        this.doNotRejectOnRollback = false;
+      } else {
+        this.doNotRejectOnRollback = config.doNotRejectOnRollback;
+      }
+    }
+
+    this.client = client;
+    this.logger = client.logger;
+    this.outerTx = outerTx;
+    this.trxClient = undefined;
+    this._debug = client.config && client.config.debug;
+
+    debug(
+      '%s: Starting %s transaction',
+      txid,
+      outerTx ? 'nested' : 'top level'
+    );
+
+    this._promise = this.acquireConnection(config, (connection) => {
+      const trxClient = (this.trxClient = makeTxClient(
+        this,
+        client,
+        connection
+      ));
+      const init = client.transacting
+        ? this.savepoint(connection)
+        : this.begin(connection);
+      const executionPromise = new Bluebird((resolver, rejecter) => {
+        this._resolver = resolver;
+        this._rejecter = rejecter;
+      });
+
+      init
+        .then(() => {
+          return makeTransactor(this, connection, trxClient);
+        })
+        .then((transactor) => {
+          if (this.initPromise) {
+            transactor.executionPromise = executionPromise.catch((err) => {
+              throw err;
+            });
+          } else {
+            transactor.executionPromise = executionPromise;
+          }
+
+          // If we've returned a "thenable" from the transaction container, assume
+          // the rollback and commit are chained to this object's success / failure.
+          // Directly thrown errors are treated as automatic rollbacks.
+          let result;
+          try {
+            result = container(transactor);
+          } catch (err) {
+            result = Bluebird.reject(err);
+          }
+          if (result && result.then && typeof result.then === 'function') {
+            result
+              .then((val) => {
+                return transactor.commit(val);
+              })
+              .catch((err) => {
+                return transactor.rollback(err);
+              });
+          }
+          return null;
+        })
+        .catch((e) => {
+          return this._rejecter(e);
+        });
+
+      return executionPromise;
+    }).catch((err) => {
+      if (this.initRejectFn) {
+        this.initRejectFn(err);
+      } else {
+        throw err;
+      }
+    });
+
+    this._completed = false;
+
+    // If there's a wrapping transaction, we need to wait for any older sibling
+    // transactions to settle (commit or rollback) before we can start, and we
+    // need to register ourselves with the parent transaction so any younger
+    // siblings can wait for us to complete before they can start.
+    this._previousSibling = Bluebird.resolve(true);
+    if (outerTx) {
+      if (outerTx._lastChild) this._previousSibling = outerTx._lastChild;
+      outerTx._lastChild = this._promise;
+    }
+  }
+
+  isCompleted() {
+    return (
+      this._completed || (this.outerTx && this.outerTx.isCompleted()) || false
+    );
+  }
+
+  begin(conn) {
+    return this.query(conn, 'BEGIN;');
+  }
+
+  savepoint(conn) {
+    return this.query(conn, `SAVEPOINT ${this.txid};`);
+  }
+
+  commit(conn, value) {
+    return this.query(conn, 'COMMIT;', 1, value);
+  }
+
+  release(conn, value) {
+    return this.query(conn, `RELEASE SAVEPOINT ${this.txid};`, 1, value);
+  }
+
+  rollback(conn, error) {
+    return this.query(conn, 'ROLLBACK', 2, error)
+      .timeout(5000)
+      .catch(Bluebird.TimeoutError, () => {
+        this._rejecter(error);
+      });
+  }
+
+  rollbackTo(conn, error) {
+    return this.query(conn, `ROLLBACK TO SAVEPOINT ${this.txid}`, 2, error)
+      .timeout(5000)
+      .catch(Bluebird.TimeoutError, () => {
+        this._rejecter(error);
+      });
+  }
+
+  query(conn, sql, status, value) {
+    const q = this.trxClient
+      .query(conn, sql)
+      .catch((err) => {
+        status = 2;
+        value = err;
+        this._completed = true;
+        debug('%s error running transaction query', this.txid);
+      })
+      .then((res) => {
+        if (status === 1) {
+          this._resolver(value);
+        }
+        if (status === 2) {
+          if (isUndefined(value)) {
+            if (this.doNotRejectOnRollback && /^ROLLBACK\b/i.test(sql)) {
+              this._resolver();
+              return;
+            }
+
+            value = new Error(`Transaction rejected with non-error: ${value}`);
+          }
+          this._rejecter(value);
+        }
+        return res;
+      });
+    if (status === 1 || status === 2) {
+      this._completed = true;
+    }
+    return q;
+  }
+
+  debug(enabled) {
+    this._debug = arguments.length ? enabled : true;
+    return this;
+  }
+
+  // Acquire a connection and create a disposer - either using the one passed
+  // via config or getting one off the client. The disposer will be called once
+  // the original promise is marked completed.
+  acquireConnection(config, cb) {
+    const configConnection = config && config.connection;
+    return new Bluebird((resolve, reject) => {
+      try {
+        resolve(configConnection || this.client.acquireConnection());
+      } catch (e) {
+        reject(e);
+      }
+    })
+      .then((connection) => {
+        connection.__knexTxId = this.txid;
+
+        return (this._previousSibling
+          ? this._previousSibling.catch(() => {})
+          : Promise.resolve()
+        ).then(function() {
+          return connection;
+        });
+      })
+      .then(async (connection) => {
+        try {
+          return await cb(connection);
+        } finally {
+          if (!configConnection) {
+            debug('%s: releasing connection', this.txid);
+            this.client.releaseConnection(connection);
+          } else {
+            debug('%s: not releasing external connection', this.txid);
+          }
+        }
+      });
+  }
+}
+
+// The transactor is a full featured knex object, with a "commit", a "rollback"
+// and a "savepoint" function. The "savepoint" is just sugar for creating a new
+// transaction. If the rollback is run inside a savepoint, it rolls back to the
+// last savepoint - otherwise it rolls back the transaction.
+function makeTransactor(trx, connection, trxClient) {
+  const transactor = makeKnex(trxClient);
+
+  transactor.withUserParams = () => {
+    throw new Error(
+      'Cannot set user params on a transaction - it can only inherit params from main knex instance'
+    );
+  };
+
+  transactor.isTransaction = true;
+  transactor.userParams = trx.userParams || {};
+
+  transactor.transaction = function(container, options) {
+    if (!options) {
+      options = { doNotRejectOnRollback: true };
+    } else if (isUndefined(options.doNotRejectOnRollback)) {
+      options.doNotRejectOnRollback = true;
+    }
+
+    if (container) {
+      return trxClient.transaction(container, options, trx);
+    } else {
+      return new Promise((resolve, _reject) => {
+        trxClient.transaction(
+          (nestedTrx) => {
+            resolve(nestedTrx);
+          },
+          options,
+          trx
+        );
+      });
+    }
+  };
+  transactor.savepoint = function(container, options) {
+    return transactor.transaction(container, options);
+  };
+
+  if (trx.client.transacting) {
+    transactor.commit = (value) => trx.release(connection, value);
+    transactor.rollback = (error) => trx.rollbackTo(connection, error);
+  } else {
+    transactor.commit = (value) => trx.commit(connection, value);
+    transactor.rollback = (error) => trx.rollback(connection, error);
+  }
+
+  transactor.isCompleted = () => trx.isCompleted();
+
+  return transactor;
+}
+
+// We need to make a client object which always acquires the same
+// connection and does not release back into the pool.
+function makeTxClient(trx, client, connection) {
+  const trxClient = Object.create(client.constructor.prototype);
+  trxClient.version = client.version;
+  trxClient.config = client.config;
+  trxClient.driver = client.driver;
+  trxClient.connectionSettings = client.connectionSettings;
+  trxClient.transacting = true;
+  trxClient.valueForUndefined = client.valueForUndefined;
+  trxClient.logger = client.logger;
+
+  trxClient.on('query', function(arg) {
+    trx.emit('query', arg);
+    client.emit('query', arg);
+  });
+
+  trxClient.on('query-error', function(err, obj) {
+    trx.emit('query-error', err, obj);
+    client.emit('query-error', err, obj);
+  });
+
+  trxClient.on('query-response', function(response, obj, builder) {
+    trx.emit('query-response', response, obj, builder);
+    client.emit('query-response', response, obj, builder);
+  });
+
+  const _query = trxClient.query;
+  trxClient.query = function(conn, obj) {
+    const completed = trx.isCompleted();
+    return new Bluebird(function(resolve, reject) {
+      try {
+        if (conn !== connection)
+          throw new Error('Invalid connection for transaction query.');
+        if (completed) completedError(trx, obj);
+        resolve(_query.call(trxClient, conn, obj));
+      } catch (e) {
+        reject(e);
+      }
+    });
+  };
+  const _stream = trxClient.stream;
+  trxClient.stream = function(conn, obj, stream, options) {
+    const completed = trx.isCompleted();
+    return new Bluebird(function(resolve, reject) {
+      try {
+        if (conn !== connection)
+          throw new Error('Invalid connection for transaction query.');
+        if (completed) completedError(trx, obj);
+        resolve(_stream.call(trxClient, conn, obj, stream, options));
+      } catch (e) {
+        reject(e);
+      }
+    });
+  };
+  trxClient.acquireConnection = function() {
+    return Bluebird.resolve(connection);
+  };
+  trxClient.releaseConnection = function() {
+    return Bluebird.resolve();
+  };
+
+  return trxClient;
+}
+
+function completedError(trx, obj) {
+  const sql = typeof obj === 'string' ? obj : obj && obj.sql;
+  debug('%s: Transaction completed: %s', trx.txid, sql);
+  throw new Error(
+    'Transaction query already complete, run with DEBUG=knex:tx for more info'
+  );
+}
+
+const promiseInterface = [
+  'then',
+  'bind',
+  'catch',
+  'finally',
+  'asCallback',
+  'spread',
+  'map',
+  'reduce',
+  'thenReturn',
+  'return',
+  'yield',
+  'ensure',
+  'exec',
+  'reflect',
+  'get',
+  'mapSeries',
+  'delay',
+];
+
+// Creates methods which proxy promise interface methods to
+// internal transaction resolution promise
+promiseInterface.forEach(function(method) {
+  Transaction.prototype[method] = function() {
+    return this._promise[method].apply(this._promise, arguments);
+  };
+});
+
+module.exports = Transaction;

node_modules/knex/lib/util/batchInsert.js

@@ -0,0 +1,57 @@
+const { isNumber, chunk, flatten } = require('lodash');
+const delay = require('./delay');
+
+module.exports = function batchInsert(
+  client,
+  tableName,
+  batch,
+  chunkSize = 1000
+) {
+  let returning = void 0;
+  let transaction = null;
+
+  const runInTransaction = (cb) => {
+    if (transaction) {
+      return cb(transaction);
+    }
+    return client.transaction(cb);
+  };
+
+  return Object.assign(
+    Promise.resolve().then(async () => {
+      if (!isNumber(chunkSize) || chunkSize < 1) {
+        throw new TypeError(`Invalid chunkSize: ${chunkSize}`);
+      }
+
+      if (!Array.isArray(batch)) {
+        throw new TypeError(
+          `Invalid batch: Expected array, got ${typeof batch}`
+        );
+      }
+
+      const chunks = chunk(batch, chunkSize);
+
+      //Next tick to ensure wrapper functions are called if needed
+      await delay(1);
+      return runInTransaction(async (tr) => {
+        const chunksResults = [];
+        for (const items of chunks) {
+          chunksResults.push(await tr(tableName).insert(items, returning));
+        }
+        return flatten(chunksResults);
+      });
+    }),
+    {
+      returning(columns) {
+        returning = columns;
+
+        return this;
+      },
+      transacting(tr) {
+        transaction = tr;
+
+        return this;
+      },
+    }
+  );
+};