61 lines
2.0 KiB
JavaScript
61 lines
2.0 KiB
JavaScript
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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 = mapValuesLimit;
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var _eachOfLimit = require('./eachOfLimit');
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var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
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var _noop = require('lodash/noop');
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var _noop2 = _interopRequireDefault(_noop);
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var _once = require('./internal/once');
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var _once2 = _interopRequireDefault(_once);
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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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* The same as [`mapValues`]{@link module:Collections.mapValues} but runs a maximum of `limit` async operations at a
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* time.
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*
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* @name mapValuesLimit
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* @static
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* @memberOf module:Collections
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* @method
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* @see [async.mapValues]{@link module:Collections.mapValues}
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* @category Collection
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* @param {Object} obj - A collection to iterate over.
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* @param {number} limit - The maximum number of async operations at a time.
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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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*/
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function mapValuesLimit(obj, limit, iteratee, callback) {
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callback = (0, _once2.default)(callback || _noop2.default);
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var newObj = {};
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var _iteratee = (0, _wrapAsync2.default)(iteratee);
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(0, _eachOfLimit2.default)(obj, limit, function (val, key, next) {
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_iteratee(val, key, function (err, result) {
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if (err) return next(err);
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newObj[key] = result;
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next();
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});
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}, function (err) {
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callback(err, newObj);
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});
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}
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module.exports = exports['default'];
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