ECMAScript parsing infrastructure for multipurpose analysis

Implements performance.now (based on process.hrtime).

Returns true if an object was created by the `Object` constructor, or Object.create(null).

Standard library

Is this specifier a node.js core module?

A basic but performant promise implementation

ASN.1 encoder and decoder

Like duplexer but using streams3

A replacement for process.exit that ensures stdio are fully drained before exiting.

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

core-js compat

Copies non-react specific statics from a child component to a parent component

invariant

the path module from node core for browsers

Does this JS environment support the `name` property on functions?

Efficient implementation of Levenshtein algorithm with locale-specific collator support.

Is this value a JS FinalizationRegistry? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Returns an array of Typed Array names that are available in the current environment

A robust polyfill for the `CSS.escape` utility method as defined in CSSOM.

Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.