fj-indexify Indexify an array Installation npm install fj-indexify --save Usage var indexify = require('fj-indexify'); const a = ["foo", "bar", "moo"];const aIdxd = indexify(a);console.log(aIdxd); // => [[0, "foo"], [1, "bar"], [2, "moo"]] map((i) => i[0] + i[1], aIdxd); // => ["0foo", "1bar", "2moo"]