Create your next immutable state by mutating the current one

A robust HTML entities encoder/decoder with full Unicode support.

Rope-based persistent sequence type

lezer-based C++ grammar

A library of cross-platform tested terminal/console command strings for doing things like color and cursor positioning. This is a subset of both ansi and vt100. All control codes included work on both Windows & Unix-like OSes, except where noted.

Delay a promise a specified amount of time

Constants and utilities about visitor keys to traverse AST.

AbortController for Node based on EventEmitter

A library to make errors.

Transforms logical assignment operators into short-circuited assignments

the complete solution for node.js command-line programs

Easy error subclassing and stack customization

Encode/decode sourcemap mappings

Babel preset for TypeScript.

Helper function to replace certain member expressions with function calls

check whether a command line command exists in the current environment

A tiny (116 bytes), secure URL-friendly unique string ID generator

Yet Another Linked List

easily create complex multi-column command-line-interfaces

TypeScript definitions for react-window

Streams3, a user-land copy of the stream library from Node.js

Check if a buffer contains valid UTF-8

A JavaScript time formatter and parser inspired by strftime and strptime.

writable stream that concatenates strings or binary data and calls a callback with the result