An ESnext spec-compliant Set.prototype.symmetricDifference shim/polyfill/replacement that works as far down as ES3
Set.prototype.symmetricDifference
An array is a collection of values, stored contiguously.
An iterable is a sequence of values.
A pack of functions for working with Sets.
A collection of functions for operating upon Entries.
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.