useToggler.js

const useToggler = (initialState) => {
  const [value, setValue] = React.useState(initialState);

  const toggleValue = React.useCallback(() => setValue((prev) => !prev), []);

  return [value, toggleValue];
};

// Usage

const Switch = () => {
  const [val, toggleVal] = useToggler(false);
  return <button onClick={toggleVal}>{val ? "ON" : "OFF"}</button>;
};