Callback wrapping utility

Allows users to use generators in order to write common functions that can be both sync or async.

deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results, with no public domain dependencies

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

Returns true if a string has an extglob.

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

A small polyfill for Object.setprototypeof

Buffers events from a stream until you are ready to handle them.

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

Safer Node.js Buffer API

Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST

process.nextTick but always with args

Use node's fs.realpath, but fall back to the JS implementation if the native one fails

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

Create a stream that emits events from multiple other streams

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.

ES2015 `Object.assign()` ponyfill

A stream that emits multiple other streams one after another.

YAML 1.2 parser and serializer

Merge multiple streams into one stream in sequence or parallel.