import uniq from 'node-uniq';

let arr = [0, 1, 2, 1];
uniq(arr); # => [0, 1, 2]


let arr = [{id: 1}, {id: 2}, {id: 3}, {id: 2}];
uniq(arr, i => i.id); # => [{id: 1}, {id: 2}, {id: 3}]