async/parallelLimit.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = parallelLimit;

var _eachOfLimit = require('./internal/eachOfLimit');

var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);

var _parallel = require('./internal/parallel');

var _parallel2 = _interopRequireDefault(_parallel);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * The same as [`parallel`]{@link module:ControlFlow.parallel} but runs a maximum of `limit` async operations at a
 * time.
 *
 * @name parallelLimit
 * @static
 * @memberOf module:ControlFlow
 * @method
 * @see [async.parallel]{@link module:ControlFlow.parallel}
 * @category Control Flow
 * @param {Array|Iterable|AsyncIterable|Object} tasks - A collection of
 * [async functions]{@link AsyncFunction} to run.
 * Each async function can complete with any number of optional `result` values.
 * @param {number} limit - The maximum number of async operations at a time.
 * @param {Function} [callback] - An optional callback to run once all the
 * functions have completed successfully. This function gets a results array
 * (or object) containing all the result arguments passed to the task callbacks.
 * Invoked with (err, results).
 * @returns {Promise} a promise, if a callback is not passed
 */
function parallelLimit(tasks, limit, callback) {
  return (0, _parallel2.default)((0, _eachOfLimit2.default)(limit), tasks, callback);
}
module.exports = exports['default'];