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

Core istanbul API for JS code coverage

Recursive version of fs.readdir with streaming API.

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

Get callsites from the V8 stack trace API

Modern Buffer API polyfill without footguns

Axios + standardized errors + request/response transforms.

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

Google APIs Client Library for Node.js

**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.

Base reporting library for istanbul

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

ECMAScript spec-compliant polyfill/shim for `globalThis`

ES2017 spec-compliant Object.values shim.

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

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

ES5 spec-compliant shim for String.prototype.trim

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

ES spec-compliant shim for ArrayBuffer.prototype.slice

Common API errors

ES proposal-spec-compliant Object.fromEntries shim.

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

Fast CSS Selectors API Engine

Node.js API (Node-API)

ES2017 spec-compliant Object.entries shim.

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

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

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

A shim for the setImmediate efficient script yielding API

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

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

Shared TypeScript definitions for Octokit projects

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

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

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

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

Universal WHATWG Fetch API for Node, Browsers and React Native

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

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

Polyfill for Metadata Reflection API

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

A simple common HTTP client specifically for Google APIs and services.