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[yaffs-website] / node_modules / uncss / node_modules / form-data / node_modules / async / parallel.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = parallelLimit;
+
+var _eachOf = require('./eachOf');
+
+var _eachOf2 = _interopRequireDefault(_eachOf);
+
+var _parallel = require('./internal/parallel');
+
+var _parallel2 = _interopRequireDefault(_parallel);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Run the `tasks` collection of functions in parallel, without waiting until
+ * the previous function has completed. If any of the functions pass an error to
+ * its callback, the main `callback` is immediately called with the value of the
+ * error. Once the `tasks` have completed, the results are passed to the final
+ * `callback` as an array.
+ *
+ * **Note:** `parallel` is about kicking-off I/O tasks in parallel, not about
+ * parallel execution of code.  If your tasks do not use any timers or perform
+ * any I/O, they will actually be executed in series.  Any synchronous setup
+ * sections for each task will happen one after the other.  JavaScript remains
+ * single-threaded.
+ *
+ * It is also possible to use an object instead of an array. Each property will
+ * be run as a function and the results will be passed to the final `callback`
+ * as an object instead of an array. This can be a more readable way of handling
+ * results from {@link async.parallel}.
+ *
+ * @name parallel
+ * @static
+ * @memberOf module:ControlFlow
+ * @method
+ * @category Control Flow
+ * @param {Array|Iterable|Object} tasks - A collection containing functions to run.
+ * Each function is passed a `callback(err, result)` which it must call on
+ * completion with an error `err` (which can be `null`) and an optional `result`
+ * value.
+ * @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).
+ * @example
+ * async.parallel([
+ *     function(callback) {
+ *         setTimeout(function() {
+ *             callback(null, 'one');
+ *         }, 200);
+ *     },
+ *     function(callback) {
+ *         setTimeout(function() {
+ *             callback(null, 'two');
+ *         }, 100);
+ *     }
+ * ],
+ * // optional callback
+ * function(err, results) {
+ *     // the results array will equal ['one','two'] even though
+ *     // the second function had a shorter timeout.
+ * });
+ *
+ * // an example using an object instead of an array
+ * async.parallel({
+ *     one: function(callback) {
+ *         setTimeout(function() {
+ *             callback(null, 1);
+ *         }, 200);
+ *     },
+ *     two: function(callback) {
+ *         setTimeout(function() {
+ *             callback(null, 2);
+ *         }, 100);
+ *     }
+ * }, function(err, results) {
+ *     // results is now equals to: {one: 1, two: 2}
+ * });
+ */
+function parallelLimit(tasks, callback) {
+  (0, _parallel2.default)(_eachOf2.default, tasks, callback);
+}
+module.exports = exports['default'];
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