show state or saved value and when delete all inputs, still show empty field

TextUtils.ts

// show state or saved value and when delete all inputs, still show empty field
export const showStateOrSavedValue: (state: string, savedValue: string) => string = (
  state,
  savedValue,
) => {
  return state || state === '' ? state : savedValue;
};

for React, such as show saved value or input value (saved to state).