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54 lines
2.0 KiB
54 lines
2.0 KiB
3 years ago
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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 _doParallel = require('./internal/doParallel');
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var _doParallel2 = _interopRequireDefault(_doParallel);
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var _map = require('./internal/map');
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var _map2 = _interopRequireDefault(_map);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* Produces a new collection of values by mapping each value in `coll` through
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* the `iteratee` function. The `iteratee` is called with an item from `coll`
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* and a callback for when it has finished processing. Each of these callback
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* takes 2 arguments: an `error`, and the transformed item from `coll`. If
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* `iteratee` passes an error to its callback, the main `callback` (for the
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* `map` function) is immediately called with the error.
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*
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* Note, that since this function applies the `iteratee` to each item in
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* parallel, there is no guarantee that the `iteratee` functions will complete
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* in order. However, the results array will be in the same order as the
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* original `coll`.
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*
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* If `map` is passed an Object, the results will be an Array. The results
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* will roughly be in the order of the original Objects' keys (but this can
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* vary across JavaScript engines).
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*
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* @name map
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* @static
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* @memberOf module:Collections
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* @method
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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 each item in
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* `coll`.
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* The iteratee should complete with the transformed item.
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* Invoked with (item, callback).
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* @param {Function} [callback] - A callback which is called when all `iteratee`
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* functions have finished, or an error occurs. Results is an Array of the
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* transformed items from the `coll`. Invoked with (err, results).
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* @example
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*
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* async.map(['file1','file2','file3'], fs.stat, function(err, results) {
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* // results is now an array of stats for each file
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* });
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*/
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exports.default = (0, _doParallel2.default)(_map2.default);
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module.exports = exports['default'];
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