Array#isArray for older browsers

A stream that emits multiple other streams one after another.

Read/write IEEE754 floating point numbers from/to a Buffer or array-like object

return the first event in a set of ee/event pairs

Modern Buffer API polyfill without footguns

Compare strings containing a mix of letters and numbers in the way a human being would in sort order.

parse a url with memoization

HTTP methods that node supports

deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify

HTTP response freshness testing

Normalize slashes in a file path to be posix/unix-like forward slashes. Also condenses repeat slashes to a single slash and removes and trailing slashes, unless disabled.

Make your own error types!

Port of jQuery.extend for node.js and the browser

Returns true if a string has an extglob.

The jsbn library is a fast, portable implementation of large-number math in pure JavaScript, enabling public-key crypto and other applications on desktop and mobile browsers.

Test whether an object looks like a promises-a+ promise

Returns true if the value is an object and not an array or null.

Unpipe a stream from all destinations

Detect whether or not an object is a Typed Array

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible