Test whether a path exists on the filesystem.

Parser and generator for CSS color strings

Store information about any JS value in a side channel. Uses WeakMap if available.

Parse and lookup IP network blocks

Detect the file type of a file, stream, or data

Hook and modify stdout and stderr

Intercept imports in Node.js

Binary Object Representation Serializer for Hashing

All schemas used for validation that are shared between our projects

React charts

Tiny, simple, and robust technique for defining and acting with local states

parser for xcodeproj/project.pbxproj files

find all require() calls by walking the AST

Parser for the content attribute of the meta viewport

High-performance Base64 encoder and decoder

Buffer-backed Streams for reading and writing.

Test if a value is a Uint16Array.

Parses data: URLs

detect possibly catastrophic, exponential-time regular expressions

Rapid decoding of Lerc compressed raster data for any standard pixel type.