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82 lines
2.8 KiB
82 lines
2.8 KiB
'use strict'; |
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Object.defineProperty(exports, "__esModule", { |
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value: true |
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}); |
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exports.default = eachLimit; |
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var _eachOf = require('./eachOf'); |
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var _eachOf2 = _interopRequireDefault(_eachOf); |
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var _withoutIndex = require('./internal/withoutIndex'); |
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var _withoutIndex2 = _interopRequireDefault(_withoutIndex); |
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var _wrapAsync = require('./internal/wrapAsync'); |
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var _wrapAsync2 = _interopRequireDefault(_wrapAsync); |
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
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/** |
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* Applies the function `iteratee` to each item in `coll`, in parallel. |
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* The `iteratee` is called with an item from the list, and a callback for when |
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* it has finished. If the `iteratee` passes an error to its `callback`, the |
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* main `callback` (for the `each` function) is immediately called with the |
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* error. |
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* |
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* Note, that since this function applies `iteratee` to each item in parallel, |
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* there is no guarantee that the iteratee functions will complete in order. |
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* |
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* @name each |
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* @static |
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* @memberOf module:Collections |
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* @method |
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* @alias forEach |
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* @category Collection |
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* @param {Array|Iterable|Object} coll - A collection to iterate over. |
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* @param {AsyncFunction} iteratee - An async function to apply to |
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* each item in `coll`. Invoked with (item, callback). |
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* The array index is not passed to the iteratee. |
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* If you need the index, use `eachOf`. |
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* @param {Function} [callback] - A callback which is called when all |
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* `iteratee` functions have finished, or an error occurs. Invoked with (err). |
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* @example |
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* |
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* // assuming openFiles is an array of file names and saveFile is a function |
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* // to save the modified contents of that file: |
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* |
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* async.each(openFiles, saveFile, function(err){ |
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* // if any of the saves produced an error, err would equal that error |
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* }); |
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* |
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* // assuming openFiles is an array of file names |
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* async.each(openFiles, function(file, callback) { |
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* |
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* // Perform operation on file here. |
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* console.log('Processing file ' + file); |
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* |
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* if( file.length > 32 ) { |
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* console.log('This file name is too long'); |
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* callback('File name too long'); |
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* } else { |
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* // Do work to process file here |
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* console.log('File processed'); |
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* callback(); |
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* } |
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* }, function(err) { |
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* // if any of the file processing produced an error, err would equal that error |
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* if( err ) { |
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* // One of the iterations produced an error. |
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* // All processing will now stop. |
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* console.log('A file failed to process'); |
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* } else { |
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* console.log('All files have been processed successfully'); |
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* } |
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* }); |
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*/ |
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function eachLimit(coll, iteratee, callback) { |
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(0, _eachOf2.default)(coll, (0, _withoutIndex2.default)((0, _wrapAsync2.default)(iteratee)), callback); |
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} |
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module.exports = exports['default']; |