The util.is* functions introduced in Node v0.12.
util.is*
Test if a value is a Buffer object.
isBuffer for node and browser (supports typed arrays)
Validates if a value is a Buffer object.
Test if a value is an ArrayBuffer.
Lightweight debugging utility for Node.js and the browser
Lodash modular utilities.
React is a JavaScript library for building user interfaces.
A querystring parser that supports nesting and arrays, with a depth limit
Higher-order functions and common patterns for asynchronous code
Babel compiler core.