ES6 Shim

When included on a Web page, this library will allow an older browser engine to render EcmaScript 6 (newer JavaScript) syntax.

Support is included only to upgrade EcmaScript 5 engines to EcmaScript 6.

What is new in this release:

• Ensure that wrapped ES5 Array.prototype methods return the proper value.

What is new in version 0.33.3:

• Ensure that wrapped ES5 Array.prototype methods return the proper value.

What is new in version 0.32.3:

• Ensure that wrapped ES5 Array.prototype methods return the proper value.

What is new in version 0.27.1:

• Ensure Array/Array.prototype functions have the correct name.
• Chrome 40 defines the incorrect name for Array#values.
• Make sure that Array.of works when subclassed.

What is new in version 0.25.3:

• Removing nonexistent arguments from some String.prototype HTML methods.
• All grade A-supported node/iojs versions now ship with an npm that understands ^.
• Test on iojs-v1.3.

What is new in version 0.25.1:

• Add Annex B String.prototype HTML methods.
• Overwriting Annex B String.prototype HTML methods in IE 9, which both uppercases the tag names, and fails to escape double quotes.
• Overwriting Annex B String.prototype HTML methods in Safari 4-5, which fails to escape double quotes.
• Ensuring that Date#toString returns "Invalid Date" when the date‘s value is NaN.

What is new in version 0.22.2:

• Better ES3 support: quoting/avoiding reserved words
• Update mocha, jscs, jshint, grunt-saucelabs, uglify-js

What is new in version 0.22.0:

• Added RegExp#flags
• Make new RegExp work with both a regex and a flags string
• Removed non-spec Object.{getPropertyNames,getPropertyDescriptor}

What is new in version 0.21.0:

• Use an invalid identifier as the es6-shim iterator key, so it doesn't show up in the console as easily.

What is new in version 0.19.1:

• Fixed Map#set and Set#add to be chainable
• Updated Mocha

What is new in version 0.18.0:

• Speed up String#trim replacement
• Named Array#find and Array#findIndex for easier debugging
• Replace broken native implementation in Firefox 25-31 for Array#find and Array#findIndex
• Ensure String.fromCodePoint has the correct length in Firefox
• List the license in package.json for npm
• Array.from: fix spec bug with Array.from([], undefined) throwing

What is new in version 0.14.0:

• Fixed Math.clz's improper handling of values that coerce to NaN
• Fixed incorrect handling of negative end index on Array#fill
• Removed Object.getOwnPropertyKeys, which shouldn't be anywhere
• Fixed arity of Map and Set constructors, per 2014.04.27 draft spec
• Added a full additional suite of ES6 promise tests
• Make Number.isInteger a bit more efficient
• Added npm run test-native to expose how broken implementations are without the shim
• Added additional tests

What is new in version 0.12.0:

• Fixed String#trim implementations that incorrectly trim.
• Stop relying on ArrayIterator being a public var, fixing Safari 8.

What is new in version 0.11.1:

• Make sure to shim Object.assign in all environments, not just true ES5
• Now including minified file and source map

What is new in version 0.11.0:

• Remove Object.getOwnPropertyDescriptors, per spec.
• IE8 fixes.
• Improve Promise scheduling.
• Add some more standalone shims.
• Use an Object.create fallback, for better ES3 compatibility.

What is new in version 0.9.1:

• Added Array#copyWithin and Number.MIN_SAFE_INTEGER
• Big speed-up of Maps / Sets for string / number keys: they are O(1) now.
• Changed Math.hypot according to spec.

What is new in version 0.5.3:

• Made String#startsWith, String#endsWith fully conform spec.

Requirements:

• JavaScript enabled on client side

Limitations:

• Internet Explorer 8 support is limited.