44 lines
829 B
JavaScript
44 lines
829 B
JavaScript
/*!
|
|
* array-unique <https://github.com/jonschlinkert/array-unique>
|
|
*
|
|
* Copyright (c) 2014-2015, Jon Schlinkert.
|
|
* Licensed under the MIT License.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
module.exports = function unique(arr) {
|
|
if (!Array.isArray(arr)) {
|
|
throw new TypeError('array-unique expects an array.');
|
|
}
|
|
|
|
var len = arr.length;
|
|
var i = -1;
|
|
|
|
while (i++ < len) {
|
|
var j = i + 1;
|
|
|
|
for (; j < arr.length; ++j) {
|
|
if (arr[i] === arr[j]) {
|
|
arr.splice(j--, 1);
|
|
}
|
|
}
|
|
}
|
|
return arr;
|
|
};
|
|
|
|
module.exports.immutable = function uniqueImmutable(arr) {
|
|
if (!Array.isArray(arr)) {
|
|
throw new TypeError('array-unique expects an array.');
|
|
}
|
|
|
|
var arrLen = arr.length;
|
|
var newArr = new Array(arrLen);
|
|
|
|
for (var i = 0; i < arrLen; i++) {
|
|
newArr[i] = arr[i];
|
|
}
|
|
|
|
return module.exports(newArr);
|
|
};
|