Memo on a budget

memo.js

const add = (a,b) => a+b;

function memo (fn) {
  let args = [];

  function result(a,b) {
    let hasMemo = args.reduce((acc, i) => {
      if(i.a === a && i.b === b) {
        return i;
      }
    }, null);

    if(hasMemo) {
      console.log('has memo, return collected');
      return hasMemo.result;
    } else {
      console.log('hasnot memo, calc new')
      const result = fn(a,b);
      args.push({a,b,result});
      return result;
    }
  }
  return result;
}



const memoizedAdd = memo(add);
console.log(memoizedAdd(1,2));
console.log(memoizedAdd(1,2));