Applicative in JavaScript

applicative

Array.prototype.ap = function(wrappedVals) {
	var results = [];

	this.map( (f)=> {
		const mr = wrappedVals.map(f);
		results = results.concat(mr);
	});

	return results;
}

const r = [x=>x*2, y=>y+3].ap([1,2,3]);

console.log(r);
//output: [ 2, 4, 6, 4, 5, 6 ]