memoizer that only remembers the most recent input

memoizeOne.ts

// memoizer that only remembers the most recent input
const memoizeOne = <Arguments extends any[], Output = any>(
  fn: (...args: Arguments) => Output,
  resolver = (...args: Arguments) => args[0],
) => {
  let resolution: any;
  let value: Output;
  return (...args: Arguments) => {
    const newResolution = resolver(...args);
    if (!resolution || resolution !== newResolution) {
      resolution = newResolution;
      value = fn(...args);
    }
    return value;
  };
};

export default memoizeOne;