aaac7fed
 liuqimichale
add
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = function (coll, limit, iteratee, callback) {
callback = callback || _noop2.default;
var _iteratee = (0, _wrapAsync2.default)(iteratee);
(0, _mapLimit2.default)(coll, limit, function (val, callback) {
_iteratee(val, function (err /*, ...args*/) {
if (err) return callback(err);
return callback(null, (0, _slice2.default)(arguments, 1));
});
}, function (err, mapResults) {
var result = [];
for (var i = 0; i < mapResults.length; i++) {
if (mapResults[i]) {
result = _concat.apply(result, mapResults[i]);
}
}
return callback(err, result);
});
};
var _noop = require('lodash/noop');
var _noop2 = _interopRequireDefault(_noop);
var _wrapAsync = require('./internal/wrapAsync');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _slice = require('./internal/slice');
var _slice2 = _interopRequireDefault(_slice);
var _mapLimit = require('./mapLimit');
var _mapLimit2 = _interopRequireDefault(_mapLimit);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var _concat = Array.prototype.concat;
/**
* The same as [`concat`]{@link module:Collections.concat} but runs a maximum of `limit` async operations at a time.
*
* @name concatLimit
* @static
* @memberOf module:Collections
* @method
* @see [async.concat]{@link module:Collections.concat}
* @category Collection
* @param {Array|Iterable|Object} coll - A collection to iterate over.
* @param {number} limit - The maximum number of async operations at a time.
* @param {AsyncFunction} iteratee - A function to apply to each item in `coll`,
* which should use an array as its result. Invoked with (item, callback).
* @param {Function} [callback] - A callback which is called after all the
* `iteratee` functions have finished, or an error occurs. Results is an array
* containing the concatenated results of the `iteratee` function. Invoked with
* (err, results).
*/
module.exports = exports['default'];
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