Easily-extendable error for use with ES6 classes

Get the type of an AMD module used for an AST node or within a file

Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code r

Infer typescript types from your JSON schemas!

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

Get the path of the parent module

Library to check variable type and properties in object.

A typescript type checker plugin to be used in Stryker, the JavaScript mutation testing framework

Adds TypeScript support to Gatsby

output coverage reports using Node.js' built in coverage

Simple module to get instance type. Like a bit more advanced version of typeof

TypeScript with some extras for type-checking.

check if a source string is an es6 module

Strict TypeScript and Flow types for style based on MDN data

Import a module like with `require()` but from a given path

The missing standard library for TypeScript, for writing production-grade software.

Simple RFC 6838 media type parser and formatter

a built-in tap extension that adds typescript support

Types and related utilities for TypeScript

An alias package for `crypto.randomBytes` in Node.js and/or browsers