JSPM

ES2015 `Object.assign()` ponyfill

Loosely test a package's compliance with the es-shim API

Module-friendly fork of object-assign, an ES2015 `Object.assign()` ponyfill

Prolyfill for CSS Container Queries (aka Element Queries)

ES2015 `Object.assign()` ponyfill

Return a string with escaped regular expression characters.

DOMTokenList implementation

A polyfill for DOM query, queryAll, and Elements

A JavaScript prollyfill for the proposed `String.isIdentifierStart` and `String.isIdentifierPart` methods.

Exposes an experimental browser API for diffHTML

ES6 keyed collections ponyfills

ES2015 Object.assign() ponyfill