What is small_promise.js ?

Because IE do not support this feature.

So I made an as lightweight as possible Promise API implementation as per MDN documentation. (Not the full ES6 / APlus specs, 884 bytes minified).

See: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise

Written in no-nonsense plain JS. No require, no module, no etc.

I want the polyfill files now

bin/smallpromise.polyfill.min.js : Polyfill for IE9+
bin/smallpromise.polyfill-ie8.min.js : Polyfill for IE8+

Parameter Type safety = off

Because i generally do code logic debugging in chrome / firefox ANYWAY.

And passing the wrong parameter type (like a null callback) is a logic error.

iterable = array, Promise.length = undefined, Promise.resolve(!thenable)

Note the following pitfalls.

• The iterable parameter used in the MDN documentation is assumed to be an array/object with forEach implementation.
• Promise object "length" properties is undefined. (Is there a real use case for this???)
• Promise.resolve, does not support thenable. Seriously, call the then/reject directly instead.

Also in case in the future, they allow promise objects to be used in multiple thread environment. This is considered thread unsafe.

Go find a larger polyfill if you need these features

Will this be blazing fast ?

Dunno. This is meant to be a super small polyfill. It should be very fast, but no promises.

Polyfill target ?

IE 9 and above really.

An IE 8 version is also added.

I did not bother about IE 7 and below.

How to build

Build using gulp

TODO ?

Full extensive proper test cases, because i been too lazy to get this done.