array-buffer-byte-length

node's assert.deepEqual algorithm

ES6 spec-compliant RegExp.prototype.flags shim.

ES2015-compliant shim for Object.is - differentiates between -0 and +0

Node.js path.parse() ponyfill

A small polyfill for Object.setprototypeof

Utility to parse a string bytes to bytes and vice-versa

An implementation of WHATWG AbortController interface.

Polyfills for React Native.

Strip UTF-8 byte order mark (BOM) from a string

Implementation of Function.prototype.bind

An implementation of WHATWG EventTarget interface.

Set a function's length property

IEEE 754 half-precision floating-point for JavaScript

The semantic version parser used by npm.

Store information about any JS value in a side channel. Uses WeakMap if available.

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

Get an iterator for any JS language value. Works robustly across all environments, all versions.

Which kind of boxed JS primitive is this?

Robustly `.call.bind()` a function

Array#isArray for older browsers

ES2015-compliant shim for Object.is - differentiates between -0 and +0

Is this an arguments object? It's a harder question than you think.

Is this value a JS SharedArrayBuffer?

An AST-based pattern checker for JavaScript.

Get and robustly cache all JS language-level intrinsics at first require time