115 lines
3.6 KiB
JavaScript
115 lines
3.6 KiB
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
|
|
var _concatLimit = require('./concatLimit.js');
|
|
|
|
var _concatLimit2 = _interopRequireDefault(_concatLimit);
|
|
|
|
var _awaitify = require('./internal/awaitify.js');
|
|
|
|
var _awaitify2 = _interopRequireDefault(_awaitify);
|
|
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
|
|
|
/**
|
|
* Applies `iteratee` to each item in `coll`, concatenating the results. Returns
|
|
* the concatenated list. The `iteratee`s are called in parallel, and the
|
|
* results are concatenated as they return. The results array will be returned in
|
|
* the original order of `coll` passed to the `iteratee` function.
|
|
*
|
|
* @name concat
|
|
* @static
|
|
* @memberOf module:Collections
|
|
* @method
|
|
* @category Collection
|
|
* @alias flatMap
|
|
* @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
|
|
* @param {AsyncFunction} iteratee - A function to apply to each item in `coll`,
|
|
* which should use an array as its result. Invoked with (item, callback).
|
|
* @param {Function} [callback] - A callback which is called after all the
|
|
* `iteratee` functions have finished, or an error occurs. Results is an array
|
|
* containing the concatenated results of the `iteratee` function. Invoked with
|
|
* (err, results).
|
|
* @returns A Promise, if no callback is passed
|
|
* @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
|
|
*
|
|
* let directoryList = ['dir1','dir2','dir3'];
|
|
* let withMissingDirectoryList = ['dir1','dir2','dir3', 'dir4'];
|
|
*
|
|
* // Using callbacks
|
|
* async.concat(directoryList, fs.readdir, function(err, results) {
|
|
* if (err) {
|
|
* console.log(err);
|
|
* } else {
|
|
* console.log(results);
|
|
* // [ 'file1.txt', 'file2.txt', 'file3.txt', 'file4.txt', file5.txt ]
|
|
* }
|
|
* });
|
|
*
|
|
* // Error Handling
|
|
* async.concat(withMissingDirectoryList, fs.readdir, function(err, results) {
|
|
* if (err) {
|
|
* console.log(err);
|
|
* // [ Error: ENOENT: no such file or directory ]
|
|
* // since dir4 does not exist
|
|
* } else {
|
|
* console.log(results);
|
|
* }
|
|
* });
|
|
*
|
|
* // Using Promises
|
|
* async.concat(directoryList, fs.readdir)
|
|
* .then(results => {
|
|
* console.log(results);
|
|
* // [ 'file1.txt', 'file2.txt', 'file3.txt', 'file4.txt', file5.txt ]
|
|
* }).catch(err => {
|
|
* console.log(err);
|
|
* });
|
|
*
|
|
* // Error Handling
|
|
* async.concat(withMissingDirectoryList, fs.readdir)
|
|
* .then(results => {
|
|
* console.log(results);
|
|
* }).catch(err => {
|
|
* console.log(err);
|
|
* // [ Error: ENOENT: no such file or directory ]
|
|
* // since dir4 does not exist
|
|
* });
|
|
*
|
|
* // Using async/await
|
|
* async () => {
|
|
* try {
|
|
* let results = await async.concat(directoryList, fs.readdir);
|
|
* console.log(results);
|
|
* // [ 'file1.txt', 'file2.txt', 'file3.txt', 'file4.txt', file5.txt ]
|
|
* } catch (err) {
|
|
* console.log(err);
|
|
* }
|
|
* }
|
|
*
|
|
* // Error Handling
|
|
* async () => {
|
|
* try {
|
|
* let results = await async.concat(withMissingDirectoryList, fs.readdir);
|
|
* console.log(results);
|
|
* } catch (err) {
|
|
* console.log(err);
|
|
* // [ Error: ENOENT: no such file or directory ]
|
|
* // since dir4 does not exist
|
|
* }
|
|
* }
|
|
*
|
|
*/
|
|
function concat(coll, iteratee, callback) {
|
|
return (0, _concatLimit2.default)(coll, Infinity, iteratee, callback);
|
|
}
|
|
exports.default = (0, _awaitify2.default)(concat, 3);
|
|
module.exports = exports['default']; |