APIs

Library for creation web and websocket restful APIs

Safer Node.js Buffer API

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

Node.js Buffer API, for the browser

A common tooling library used by the googleapis npm module. You probably don't want to use this directly.

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

Get callsites from the V8 stack trace API

Axios + standardized errors + request/response transforms.

Core istanbul API for JS code coverage

Google APIs Client Library for Node.js

Modern Buffer API polyfill without footguns

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

ES6 spec-compliant RegExp.prototype.flags shim.

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

Fast, unopinionated, minimalist web framework

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

Get the byte length of an ArrayBuffer, even in engines without a `.byteLength` method.

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

Base reporting library for istanbul

ECMAScript spec-compliant polyfill/shim for `globalThis`

ES5 spec-compliant shim for String.prototype.trim

Utility functions for working with TypeScript's API. Successor to the wonderful tsutils. 🛠️️

ES spec-compliant shim for ArrayBuffer.prototype.slice

ES2017 spec-compliant Object.values shim.

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

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

Node.js API (Node-API)

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

Esprima-compatible implementation of the Mozilla JS Parser API

ES proposal-spec-compliant Object.fromEntries shim.

Common API errors

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

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

ES2017 spec-compliant Object.entries shim.

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

An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible

Fast CSS Selectors API Engine

Shared TypeScript definitions for Octokit projects

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

Universal WHATWG Fetch API for Node, Browsers and React Native

Provides functions for detecting if the host environment supports the WebCrypto API

A shim for the setImmediate efficient script yielding API

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

An ESnext spec-compliant `Object.groupBy` shim/polyfill/replacement that works as far down as ES3.

tiny modular DOM lib for ie9+

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

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

Public API for OpenTelemetry

An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.

Public logs API for OpenTelemetry