Check if the character represented by a given Unicode code point is fullwidth

Sidecar code splitting utils

HTTP status utility

Get a KeyboardEvent.key-style string from an event

Lint files staged by git

Composable primitives for dead code elimination in Babel

A simple code writer that assists with formatting and visualizing blocks of code.

Create an error with a code

Low footprint ECMAScript source code parser

ANSI escape codes for manipulating the terminal

Angular Schematics - Library

QRCode / 2d Barcode api with both server side and client side support using canvas

No-dependencies, low-level, high-performance JIT code generation package for JavaScript

JavaScript code generator from an ESTree-compliant AST.

Check if a character is hexadecimal

Detect the indentation of code

Virtual syntax highlighting for virtual DOMs and non-HTML things

Check if a character is alphabetical

Microsoft Authentication Library for js

SDK for building AI agents with Claude Code's capabilities. Programmatically interact with Claude to build autonomous agents that can understand codebases, edit files, and execute workflows.