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47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
/** @license MIT License (c) copyright 2011-2013 original author or authors */
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/**
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* sequence.js
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*
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* Run a set of task functions in sequence. All tasks will
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* receive the same args.
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*
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* @author Brian Cavalier
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* @author John Hann
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*/
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(function(define) {
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define(function(require) {
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var when = require('./when');
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var all = when.Promise.all;
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var slice = Array.prototype.slice;
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/**
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* Run array of tasks in sequence with no overlap
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* @param tasks {Array|Promise} array or promiseForArray of task functions
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* @param [args] {*} arguments to be passed to all tasks
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* @return {Promise} promise for an array containing
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* the result of each task in the array position corresponding
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* to position of the task in the tasks array
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*/
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return function sequence(tasks /*, args... */) {
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var results = [];
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return all(slice.call(arguments, 1)).then(function(args) {
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return when.reduce(tasks, function(results, task) {
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return when(task.apply(void 0, args), addResult);
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}, results);
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});
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function addResult(result) {
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results.push(result);
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return results;
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}
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};
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});
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})(typeof define === 'function' && define.amd ? define : function (factory) { module.exports = factory(require); });
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