es2-to-es3

Polyfills of built-in objects and built-in methods to run IE6 and later code in early DHTML browsers.

v0.9.2 URL: https://unpkg.com/es2-to-es3@0.9.2/index.js

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ECMAScript2 javascript browser js

is-reserved

Check if some keyword is reserved in Javascript. It supports all ECMAScript versions

v0.0.11 URL: https://unpkg.com/is-reserved@0.0.11/index.js

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reserved keyword javascript ECMAScript ECMAScript1 ECMAScript2 ECMAScript3 ECMAScript5 ECMAScript6 es es1 es2 es3 es5 es6 es7