const sample = ({ source, clock }) => {
  const defaultState = getState(source);
  const accumulatorMetaAtom = declareAtom(
    {
      data: defaultState,
      shouldUpdate: false,
    },
    (on) => [
      on(source, (state, data) => ({ data, shouldUpdate: false })),
      on(clock, ({ data }) => ({ data, shouldUpdate: true })),
    ]
  );

  return declareAtom(defaultState, (on) => [
    on(
      accumulatorMetaAtom,
      (state, ({ data, shouldUpdate }) => (shouldUpdate ? data : state))
    ),
  ]);
};