68 lines
1.5 KiB
JavaScript
68 lines
1.5 KiB
JavaScript
'use strict';
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const url = require('url');
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const got = require('got');
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const registryUrl = require('registry-url');
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const registryAuthToken = require('registry-auth-token');
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const semver = require('semver');
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module.exports = (name, opts) => {
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const scope = name.split('/')[0];
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const regUrl = registryUrl(scope);
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const pkgUrl = url.resolve(regUrl, encodeURIComponent(name).replace(/^%40/, '@'));
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const authInfo = registryAuthToken(regUrl, {recursive: true});
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opts = Object.assign({
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version: 'latest'
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}, opts);
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const headers = {
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accept: 'application/vnd.npm.install-v1+json; q=1.0, application/json; q=0.8, */*'
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};
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if (opts.fullMetadata) {
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delete headers.accept;
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}
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if (authInfo) {
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headers.authorization = `${authInfo.type} ${authInfo.token}`;
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}
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return got(pkgUrl, {json: true, headers})
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.then(res => {
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let data = res.body;
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let version = opts.version;
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if (opts.allVersions) {
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return data;
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}
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if (data['dist-tags'][version]) {
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data = data.versions[data['dist-tags'][version]];
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} else if (version) {
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if (!data.versions[version]) {
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const versions = Object.keys(data.versions);
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version = semver.maxSatisfying(versions, version);
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if (!version) {
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throw new Error('Version doesn\'t exist');
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}
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}
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data = data.versions[version];
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if (!data) {
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throw new Error('Version doesn\'t exist');
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}
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}
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return data;
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})
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.catch(err => {
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if (err.statusCode === 404) {
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throw new Error(`Package \`${name}\` doesn't exist`);
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}
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throw err;
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});
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};
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