es2pi.js

ES6 + a little more on top of ES5

Description

In short, es2pi is a collection of ES6 polyfills + methods missing even in ES6.

Why reinvent the wheel?

Because:

• shims/polyfills found to date are not quite optimal, especially Map and Set.
• If you want just Map/Set, see https://github.com/dankogai/js-es6-map
• ES6 is rather inconsistent in the choice of methods, like...
• Adding String.prototype.repeat while Array.prototype.repeat is missing. You should be able to go like var a = [0].repeat(42);
• Type.isType is available only for Array.
• typeof null === null is welcome but shouldn't we add Object.typeOf, too?
• and the .typeOf() methods like 'JavaScript'.typeOf() === 'string' ?
• and look, num.is(42) is definitely better than Object.is(num, 42) !

Thanks to ES5, it is now safe to extend Object.prototype via Object.defineProperty yet we are still too afraid. Underscore.js is a great hack but a hack nontheless. Isn't it time to stop wrapping JavaScript's bad parts and extend its good parts?

What is es2pi named after?

2π is a little bigger than 6, isn't it?

Table of Contents

• Array
• Boolean
• Function
• Map
• Math
• Number
• Object
  • Object.clone
  • Object.installProperty
• Set
• String

See Also

• http://wiki.ecmascript.org/doku.php?id=harmony:proposals
• https://wiki.mozilla.org/ES6_plans
• http://kangax.github.com/es5-compat-table/es6/