Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

`Object.defineProperty`, but not IE 8's broken one.

Define a data property on an object. Will fall back to assignment in an engine without descriptors.

Ensure that reserved words are quoted in object property keys

Match a Unicode property or property alias to its canonical property name per the algorithm used for RegExp Unicode property escapes in ECMAScript.

This plugin transforms checks for a private property in an object

Compile Unicode property escapes in Unicode regular expressions to ES5.

Allow parsing of '#foo in obj' brand checks

Match a Unicode property or property alias to its canonical property name per the algorithm used for RegExp Unicode property escapes in ECMAScript.

Unicode property alias mappings in JavaScript format for property names that are supported in ECMAScript RegExp property escapes.

Info on the properties and attributes of the web platform

The set of canonical Unicode property names supported in ECMAScript RegExp property escapes.

Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.

A fast, efficient Node.js Worker Thread Pool implementation

AWS SDK for JavaScript Transfer Client for Node.js, Browser and React Native

The Filesystem API provides a NodeJS-like API for working with files on the device.

PostCSS plugin postcss-page-break to fallback `break-` properties with `page-break-` alias

Parse JSON with more helpful errors

hast utility to check if a node has a property

Define a lazily evaluated property on an object