MutationObserver shim for ES3 environments
Detect the appearance of an element in the browser DOM
ESLint plugin for preventing memory leaks around observers (ResizeObserver, IntersectionObserver, MutationObserver)
Run something when a DOM element appears and when it exits
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.