Implementation of the Promises/A+ specification
You know, the usual:
var Promise = require('mypromises');
var f, r;
var p = new Promise(function(onFulfill, onReject) {
f = onFulfill;
r = onReject;
});
// fulfill with the solution
f(42);
// or reject
// r('boom!');
// and so on...
// p.then(...);This is just a naive implementation I wrote to make sure I fully understood the Promises/A+ spec. If you are like me and had trouble following all the promise resolution cases in your head while reading the spec, then examining the code of this implementation might help you.
I've tried to give code clarity priority over any other consideration:
- pure functions except where side effects are expected per the spec (resolving Promise's)
- objects (Promise's) mostly just contain data
My next step is to optimize for performance. Comments are welcome.
npm install mypromises
npm run-script node
The MIT License (MIT)
Copyright © 2013 Francisco Meza
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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