function useTweaks(defaults) {
  const [values, setValues] = React.useState(defaults);
  const setTweak = React.useCallback((keyOrEdits, val) => {
    const edits =
      typeof keyOrEdits === "object" && keyOrEdits !== null
        ? keyOrEdits
        : { [keyOrEdits]: val };
    setValues((prev) => ({ ...prev, ...edits }));
  }, []);
  return [values, setTweak];
}

Object.assign(window, { useTweaks });