TypeScript is a language for application scale JavaScript development

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

ECMAScript parser

Get callsites from the V8 stack trace API

Standard library

option parsing and help generation

a little globber

A stupidly simple key/value storage using files to persist some data

YAML 1.2 parser and serializer

A collection of essential TypeScript types

Require hook for automatic V8 compile cache persistence

`Start a promise chain

A cache object that deletes the least-recently-used items.

Clean up error stack traces

The URI implementation that is used by VS Code and its extensions

concatenative mapdashery

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

A super light and fast circular JSON parser.

fast, tiny `queueMicrotask` shim for modern engines

Check if a path is a file, directory, or symlink

Make a callback- or promise-based function support both promises and callbacks.

Browser-friendly inheritance fully compatible with standard node.js inherits()

A library for efficiently walking a directory recursively

Ignore is a manager and filter for .gitignore rules, the one used by eslint, gitbook and many others.