Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

resolve like require.resolve() on behalf of files asynchronously and synchronously

Modify a JS/TS file and write back magically just like JSON!

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

Standalone TypeScript project service wrapper for linting.

This plugin adds `TypeScript` support to `eslint-plugin-import`

A collection of essential TypeScript types

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

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

Extract meaning from JS Errors

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript

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

Implementation of Function.prototype.bind

Is this specifier a node.js core module?

TypeScript Execute (tsx): Node.js enhanced with esbuild to run TypeScript & ESM files

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

A parser that converts TypeScript source code into an ESTree compatible form

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

ES2019 spec-compliant String.prototype.trimStart shim.

Utilities for collecting TSConfigs for linting scenarios.