87 lines
2.6 KiB
JavaScript
87 lines
2.6 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _reject2 = require('./internal/reject.js');
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var _reject3 = _interopRequireDefault(_reject2);
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var _eachOf = require('./eachOf.js');
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var _eachOf2 = _interopRequireDefault(_eachOf);
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var _awaitify = require('./internal/awaitify.js');
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var _awaitify2 = _interopRequireDefault(_awaitify);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* The opposite of [`filter`]{@link module:Collections.filter}. Removes values that pass an `async` truth test.
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*
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* @name reject
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* @static
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* @memberOf module:Collections
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* @method
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* @see [async.filter]{@link module:Collections.filter}
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* @category Collection
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* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
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* @param {Function} iteratee - An async truth test to apply to each item in
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* `coll`.
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* The should complete with a boolean value as its `result`.
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* Invoked with (item, callback).
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* @param {Function} [callback] - A callback which is called after all the
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* `iteratee` functions have finished. Invoked with (err, results).
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* @returns {Promise} a promise, if no callback is passed
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* @example
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*
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* // dir1 is a directory that contains file1.txt, file2.txt
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* // dir2 is a directory that contains file3.txt, file4.txt
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* // dir3 is a directory that contains file5.txt
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*
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* const fileList = ['dir1/file1.txt','dir2/file3.txt','dir3/file6.txt'];
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*
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* // asynchronous function that checks if a file exists
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* function fileExists(file, callback) {
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* fs.access(file, fs.constants.F_OK, (err) => {
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* callback(null, !err);
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* });
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* }
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*
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* // Using callbacks
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* async.reject(fileList, fileExists, function(err, results) {
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* // [ 'dir3/file6.txt' ]
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* // results now equals an array of the non-existing files
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* });
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*
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* // Using Promises
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* async.reject(fileList, fileExists)
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* .then( results => {
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* console.log(results);
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* // [ 'dir3/file6.txt' ]
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* // results now equals an array of the non-existing files
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* }).catch( err => {
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* console.log(err);
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* });
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*
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* // Using async/await
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* async () => {
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* try {
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* let results = await async.reject(fileList, fileExists);
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* console.log(results);
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* // [ 'dir3/file6.txt' ]
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* // results now equals an array of the non-existing files
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* }
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* catch (err) {
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* console.log(err);
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* }
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* }
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*
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*/
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function reject(coll, iteratee, callback) {
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return (0, _reject3.default)(_eachOf2.default, coll, iteratee, callback);
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}
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exports.default = (0, _awaitify2.default)(reject, 3);
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module.exports = exports['default'];
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