Simple JS Memoize

memoize.js

let utils = {};

utils.memoize = function(fn) {
	let cache = {};
	
	return function(...args) {
		let key = [...args].join(',');
		
		if (cache[key]) return cache[key];
		
		
		let result = fn(...args);
		cache[key] = result;
		
		return result;
	};
}