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62 lines
2.2 KiB
JavaScript
62 lines
2.2 KiB
JavaScript
6 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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exports.default = mapValues;
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var _mapValuesLimit = require('./mapValuesLimit');
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var _mapValuesLimit2 = _interopRequireDefault(_mapValuesLimit);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* A relative of [`map`]{@link module:Collections.map}, designed for use with objects.
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*
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* Produces a new Object by mapping each value of `obj` through the `iteratee`
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* function. The `iteratee` is called each `value` and `key` from `obj` and a
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* callback for when it has finished processing. Each of these callbacks takes
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* two arguments: an `error`, and the transformed item from `obj`. If `iteratee`
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* passes an error to its callback, the main `callback` (for the `mapValues`
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* function) is immediately called with the error.
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*
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* Note, the order of the keys in the result is not guaranteed. The keys will
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* be roughly in the order they complete, (but this is very engine-specific)
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*
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* @name mapValues
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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 {Object} obj - A collection to iterate over.
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* @param {AsyncFunction} iteratee - A function to apply to each value and key
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* in `coll`.
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* The iteratee should complete with the transformed value as its result.
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* Invoked with (value, key, 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. `result` is a new object consisting
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* of each key from `obj`, with each transformed value on the right-hand side.
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* Invoked with (err, result).
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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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* async.mapValues({
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* f1: 'file1',
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* f2: 'file2',
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* f3: 'file3'
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* }, function (file, key, callback) {
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* fs.stat(file, callback);
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* }, function(err, result) {
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* // result is now a map of stats for each file, e.g.
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* // {
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* // f1: [stats for file1],
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* // f2: [stats for file2],
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* // f3: [stats for file3]
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* // }
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* });
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*/
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function mapValues(obj, iteratee, callback) {
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return (0, _mapValuesLimit2.default)(obj, Infinity, iteratee, callback);
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}
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module.exports = exports['default'];
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