The Node.js `util.deprecate()` function with browser support

btoa for Node.JS (it's a one-liner)

Combine an array of streams into a single duplex stream using pump and duplexify

access to v8's CallSites

Get the command from a shebang

JSON parse & stringify that supports binary via bops & base64

A basic but performant promise implementation

Zero CPU overhead, zero dependency, true event-loop blocking sleep

A robust polyfill for the `CSS.escape` utility method as defined in CSSOM.

Run a function exactly one time

A cross browser microtask library

Check if a stream has ended

Determine if an object is a Stream

Array#isArray for older browsers

split a Text Stream into a Line Stream

Color your terminal using CSS/hex color codes

kill trees of processes

Unpack multibyte binary values from buffers

Safer Node.js Buffer API

Resolve the path of a module like `require.resolve()` but from the current working directory