Lightweight debugging utility for Node.js and the browser

Tiny millisecond conversion utility

RFC4122 (v1, v4, and v5) UUIDs

Browser-friendly inheritance fully compatible with standard node.js inherits()

Node.js Buffer API, for the browser

babel's modular runtime helpers

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

Implementation of Function.prototype.bind

Robustly `.call.bind()` a function

Determine if the JS environment has Symbol support. Supports spec, or shams.

ECMAScript spec abstract operations.

Base64 encoding/decoding in pure JS

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

Standard library

Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

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

Node.js's util module for all engines

Object.prototype.hasOwnProperty.call shortcut

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

Determine if a function is a native generator function.

Modern JavaScript date utility library

Lodash exported as ES modules.

Angular DevKit - Core Utility Library

implementation of crypto for the browser

A simple, lightweight JavaScript API for handling cookies

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

Expand placeholders in a template string

Check if something is a promise

is that thing a function? Use this module to find out

_NOTE: This is specifically tailored for Firebase JS SDK usage, if you are not a member of the Firebase team, please avoid using this package_

foreach component + npm package

The Firebase Authenticaton component of the Firebase JS SDK.

The Remote Config package of the Firebase JS SDK

Parse JSON safely without throwing

Convert between keyboard keycodes and keynames and vice versa.

A collection of lightweight utilities for inspecting and manipulating video container formats.

Build an absolute URL from a base URL and a relative URL (RFC 1808). No dependencies!

A JavaScript implementation of the WebVTT specification, forked from vtt.js for use with Video.js

Split SDK

Compiles a function to compute the plural forms index for a given value

Helpers for handling mobile devices

Polyfill Web Speech API with Cognitive Services Speech-to-Text service