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- 'use strict';
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- var _eachOf = require('./eachOf.js');
- var _eachOf2 = _interopRequireDefault(_eachOf);
- var _withoutIndex = require('./internal/withoutIndex.js');
- var _withoutIndex2 = _interopRequireDefault(_withoutIndex);
- var _wrapAsync = require('./internal/wrapAsync.js');
- var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
- var _awaitify = require('./internal/awaitify.js');
- var _awaitify2 = _interopRequireDefault(_awaitify);
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- /**
- * Applies the function `iteratee` to each item in `coll`, in parallel.
- * The `iteratee` is called with an item from the list, and a callback for when
- * it has finished. If the `iteratee` passes an error to its `callback`, the
- * main `callback` (for the `each` function) is immediately called with the
- * error.
- *
- * Note, that since this function applies `iteratee` to each item in parallel,
- * there is no guarantee that the iteratee functions will complete in order.
- *
- * @name each
- * @static
- * @memberOf module:Collections
- * @method
- * @alias forEach
- * @category Collection
- * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
- * @param {AsyncFunction} iteratee - An async function to apply to
- * each item in `coll`. Invoked with (item, callback).
- * The array index is not passed to the iteratee.
- * If you need the index, use `eachOf`.
- * @param {Function} [callback] - A callback which is called when all
- * `iteratee` functions have finished, or an error occurs. Invoked with (err).
- * @returns {Promise} a promise, if a callback is omitted
- * @example
- *
- * // dir1 is a directory that contains file1.txt, file2.txt
- * // dir2 is a directory that contains file3.txt, file4.txt
- * // dir3 is a directory that contains file5.txt
- * // dir4 does not exist
- *
- * const fileList = [ 'dir1/file2.txt', 'dir2/file3.txt', 'dir/file5.txt'];
- * const withMissingFileList = ['dir1/file1.txt', 'dir4/file2.txt'];
- *
- * // asynchronous function that deletes a file
- * const deleteFile = function(file, callback) {
- * fs.unlink(file, callback);
- * };
- *
- * // Using callbacks
- * async.each(fileList, deleteFile, function(err) {
- * if( err ) {
- * console.log(err);
- * } else {
- * console.log('All files have been deleted successfully');
- * }
- * });
- *
- * // Error Handling
- * async.each(withMissingFileList, deleteFile, function(err){
- * console.log(err);
- * // [ Error: ENOENT: no such file or directory ]
- * // since dir4/file2.txt does not exist
- * // dir1/file1.txt could have been deleted
- * });
- *
- * // Using Promises
- * async.each(fileList, deleteFile)
- * .then( () => {
- * console.log('All files have been deleted successfully');
- * }).catch( err => {
- * console.log(err);
- * });
- *
- * // Error Handling
- * async.each(fileList, deleteFile)
- * .then( () => {
- * console.log('All files have been deleted successfully');
- * }).catch( err => {
- * console.log(err);
- * // [ Error: ENOENT: no such file or directory ]
- * // since dir4/file2.txt does not exist
- * // dir1/file1.txt could have been deleted
- * });
- *
- * // Using async/await
- * async () => {
- * try {
- * await async.each(files, deleteFile);
- * }
- * catch (err) {
- * console.log(err);
- * }
- * }
- *
- * // Error Handling
- * async () => {
- * try {
- * await async.each(withMissingFileList, deleteFile);
- * }
- * catch (err) {
- * console.log(err);
- * // [ Error: ENOENT: no such file or directory ]
- * // since dir4/file2.txt does not exist
- * // dir1/file1.txt could have been deleted
- * }
- * }
- *
- */
- function eachLimit(coll, iteratee, callback) {
- return (0, _eachOf2.default)(coll, (0, _withoutIndex2.default)((0, _wrapAsync2.default)(iteratee)), callback);
- }
- exports.default = (0, _awaitify2.default)(eachLimit, 3);
- module.exports = exports['default'];
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