From 18efd30a263ec0d79a26a82cbd8c90c9f81056b7 Mon Sep 17 00:00:00 2001 From: Minteck Date: Mon, 28 Nov 2022 17:14:38 +0100 Subject: Open source --- node_modules/async/race.js | 67 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 node_modules/async/race.js (limited to 'node_modules/async/race.js') diff --git a/node_modules/async/race.js b/node_modules/async/race.js new file mode 100644 index 0000000..9595d88 --- /dev/null +++ b/node_modules/async/race.js @@ -0,0 +1,67 @@ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +var _once = require('./internal/once.js'); + +var _once2 = _interopRequireDefault(_once); + +var _wrapAsync = require('./internal/wrapAsync.js'); + +var _wrapAsync2 = _interopRequireDefault(_wrapAsync); + +var _awaitify = require('./internal/awaitify.js'); + +var _awaitify2 = _interopRequireDefault(_awaitify); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Runs the `tasks` array of functions in parallel, without waiting until the + * previous function has completed. Once any of the `tasks` complete or pass an + * error to its callback, the main `callback` is immediately called. It's + * equivalent to `Promise.race()`. + * + * @name race + * @static + * @memberOf module:ControlFlow + * @method + * @category Control Flow + * @param {Array} tasks - An array containing [async functions]{@link AsyncFunction} + * to run. Each function can complete with an optional `result` value. + * @param {Function} callback - A callback to run once any of the functions have + * completed. This function gets an error or result from the first function that + * completed. Invoked with (err, result). + * @returns {Promise} a promise, if a callback is omitted + * @example + * + * async.race([ + * function(callback) { + * setTimeout(function() { + * callback(null, 'one'); + * }, 200); + * }, + * function(callback) { + * setTimeout(function() { + * callback(null, 'two'); + * }, 100); + * } + * ], + * // main callback + * function(err, result) { + * // the result will be equal to 'two' as it finishes earlier + * }); + */ +function race(tasks, callback) { + callback = (0, _once2.default)(callback); + if (!Array.isArray(tasks)) return callback(new TypeError('First argument to race must be an array of functions')); + if (!tasks.length) return callback(); + for (var i = 0, l = tasks.length; i < l; i++) { + (0, _wrapAsync2.default)(tasks[i])(callback); + } +} + +exports.default = (0, _awaitify2.default)(race, 2); +module.exports = exports['default']; \ No newline at end of file -- cgit