APIs

Safer Node.js Buffer API

An implementation of the WHATWG URL Standard's URL API and parsing machinery

Recursive version of fs.readdir with streaming API.

Node.js Buffer API, for the browser

A light-weight module that brings Fetch API to node.js

Get callsites from the V8 stack trace API

Modern Buffer API polyfill without footguns

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

Core istanbul API for JS code coverage

Fast, unopinionated, minimalist web framework

**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).

ES6 spec-compliant RegExp.prototype.flags shim.

Common API errors

ES2017 spec-compliant Object.values shim.

Base reporting library for istanbul

An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.

> DEPRECATED: Use `v8` APIs directly: https://nodejs.org/api/v8.html#serialization-api

Load node modules according to tsconfig paths, in run-time or via API.

An ES2015 spec-compliant `Function.prototype.name` shim

Fast CSS Selectors API Engine

An ES2019 spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.

ES2017 spec-compliant Object.entries shim.

A shim for the setImmediate efficient script yielding API

ES proposal-spec-compliant Object.fromEntries shim.

ES2017 spec-compliant shim for `Object.getOwnPropertyDescriptors` that works in ES5.

Esprima-compatible implementation of the Mozilla JS Parser API

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

2KB immutable date time library alternative to Moment.js with the same modern API

An ES2019 spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.

SockJS-node is a server counterpart of SockJS-client a JavaScript library that provides a WebSocket-like object in the browser. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication

In-memory file-system with Node's fs API.

Convenience wrapper for ReadableStream, with an API lifted from "from" and "through2"

Provides a fallback for non-existing directories so that the HTML 5 history API can be used.

Node's domain module for the web browser. This is merely an evented try...catch with the same API as node, nothing more.

Packages @jridgewell/trace-mapping and @jridgewell/gen-mapping into the familiar source-map API

Node.js API (Node-API)

ES spec-compliant shim for Object.hasOwn

AWS SDK for JavaScript

tiny modular DOM lib for ie9+

Universal WHATWG Fetch API for Node, Browsers and React Native

request the caniuse data to check browsers compatibilities

Core Storybook API & Context

Shared TypeScript definitions for Octokit projects

Distribute processing tasks to child processes with an über-simple API and baked-in durability & custom concurrency options.

Let your JS API users either give you a callback or receive a promise

Implements https://w3c.github.io/accname/

elegant & feature rich browser / node HTTP with a fluent API

Transform SVG into React Components.

An ES5 spec-compliant `Array.prototype.reduce` shim/polyfill/replacement that works as far down as ES3.

Google APIs Authentication Client Library for Node.js