Universal module importer for Node.js

Check if a path exists

Get the byteOffset out of a DataView, robustly.

WebAssembly Text Format support for the CodeMirror code editor

The semantic version parser used by npm.

Selectors for Redux.

TypeScript definitions for node

A regex that tokenizes JavaScript.

Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`

Allow parsing of async generator functions

Parses every stack trace into a nicely formatted array of hashes.

Compile exponentiation operator to ES5

TypeScript definitions for resolve

Spawn commands like `child_process.exec` does but return a `ChildProcess`

Immutable Data Collections

Media Type Database

React package for working with the DOM.

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @toStringTag.

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

Encode/decode sourcemap mappings

Define a data property on an object. Will fall back to assignment in an engine without descriptors.

Parses, serializes, and manipulates MIME types, according to the WHATWG MIME Sniffing Standard

fast-csv parsing package