Converts a source-map from/to different formats and allows adding/changing properties.

Global identifiers from different JavaScript environments

Add classes, identifiers and attributes to your markdown with curly brackets, similar to pandoc's header attributes

asynchronous file and directory operations for Node.js

Lezer grammar for Lezer grammars

Transform optional chaining operators into a series of nil checks

Encode/decode sourcemap mappings

Brace expansion as known from sh/bash

A cross platform Promise.allSettled polyfill

An implementation of the WHATWG URL Standard's URL API and parsing machinery

A memoization function that uses a WeakMap

TypeScript definitions for lodash

JavaScript micro templates.

Blazing fast and accurate glob matcher written in JavaScript, with no dependencies and full support for standard and extended Bash glob features, including braces, extglobs, POSIX brackets, and regular expressions.

The compat-data to determine required Babel plugins

ES spec-like internal slots

Give a regex, get a robust predicate function that tests it against a string.

A url sanitizer

[](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.a

Compute the Voronoi diagram of a set of two-dimensional points.

Reactive Extensions for modern JavaScript

Constants and utilities about visitor keys to traverse AST.

A recommended babel preprocessing plugin for emotion, The Next Generation of CSS-in-JS.

A library for deep (recursive) merging of Javascript objects