Function Callback

test/unit/core/ui-react/hooks.test.tsx:701–713

({
  mode,
  checkpoints,
}: {
  readonly mode: string;
  readonly checkpoints: Checkpoints;
})

};

const Callback = ({
  mode,
  checkpoints,
}: {
  readonly mode: string;
  readonly checkpoints: Checkpoints;
}) => {
  const goBackward = useGoBackwardCallback(checkpoints);
  const goForward = useGoForwardCallback(checkpoints);
  return (
    <button onClick={mode == 'goBackward' ? goBackward : goForward}>Go</button>
  );
};

const CheckpointInfo = ({
  mode,