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46 lines
1.2 KiB
46 lines
1.2 KiB
/** @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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