Return the union between two sets.
const union = require('@sets/union')
console.log(union(
new Set('hello'),
new Set('world')
)) // "helowrd"
$ npm install --save @sets/union
union(lhs, rhs) -> SetReturn the union between the sets represented by lhs and rhs. The
resulting set will contain all elements that appear in either lhs and rhs.
MIT