def recurse() -> Do:
result = yield thunk()
done = check(result)
yield (TmuxIO.pure(result) if done else TmuxIO.error(error)
if time.time() - start > timeout else wait_and_recurse())
def error(self, e: str) -> 'TmuxIOState[S, A]':
return TmuxIOState.lift(TmuxIO.error(e))