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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = mapValuesLimit;
var _eachOfLimit = require('./eachOfLimit');
var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
var _noop = require('lodash/noop');
var _noop2 = _interopRequireDefault(_noop);
var _once = require('./internal/once');
var _once2 = _interopRequireDefault(_once);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* The same as [`mapValues`]{@link module:Collections.mapValues} but runs a maximum of `limit` async operations at a
* time.
*
* @name mapValuesLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.mapValues]{@link module:Collections.mapValues}
* @category Collection
* @param {Object} obj - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {Function} iteratee - A function to apply to each value in `obj`.
* The iteratee is passed a `callback(err, transformed)` which must be called
* once it has completed with an error (which can be `null`) and a
* transformed value. Invoked with (value, key, callback).
* @param {Function} [callback] - A callback which is called when all `iteratee`
* functions have finished, or an error occurs. `result` is a new object consisting
* of each key from `obj`, with each transformed value on the right-hand side.
* Invoked with (err, result).
*/
function mapValuesLimit(obj, limit, iteratee, callback) {
callback = (0, _once2.default)(callback || _noop2.default);
var newObj = {};
(0, _eachOfLimit2.default)(obj, limit, function (val, key, next) {
iteratee(val, key, function (err, result) {
if (err) return next(err);
newObj[key] = result;
next();
});
}, function (err) {
callback(err, newObj);
});
}
module.exports = exports['default'];
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