60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
|
|
var _wrapAsync = require('./internal/wrapAsync.js');
|
|
|
|
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
|
|
|
|
var _mapLimit = require('./mapLimit.js');
|
|
|
|
var _mapLimit2 = _interopRequireDefault(_mapLimit);
|
|
|
|
var _awaitify = require('./internal/awaitify.js');
|
|
|
|
var _awaitify2 = _interopRequireDefault(_awaitify);
|
|
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
|
|
|
/**
|
|
* 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
|
|
* @alias flatMapLimit
|
|
* @param {Array|Iterable|AsyncIterable|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).
|
|
* @returns A Promise, if no callback is passed
|
|
*/
|
|
function concatLimit(coll, limit, iteratee, callback) {
|
|
var _iteratee = (0, _wrapAsync2.default)(iteratee);
|
|
return (0, _mapLimit2.default)(coll, limit, (val, iterCb) => {
|
|
_iteratee(val, (err, ...args) => {
|
|
if (err) return iterCb(err);
|
|
return iterCb(err, args);
|
|
});
|
|
}, (err, mapResults) => {
|
|
var result = [];
|
|
for (var i = 0; i < mapResults.length; i++) {
|
|
if (mapResults[i]) {
|
|
result = result.concat(...mapResults[i]);
|
|
}
|
|
}
|
|
|
|
return callback(err, result);
|
|
});
|
|
}
|
|
exports.default = (0, _awaitify2.default)(concatLimit, 4);
|
|
module.exports = exports['default']; |