Function storeChanged

src/checkpoints/index.ts:116–123

()

      clearCheckpointIds(backwardIds, size(backwardIds) - backwardIdsSize);

    const storeChanged = () =>
      ifNotUndefined(currentId, () => {
        arrayPush(backwardIds, currentId as Id);
        trimBackwardsIds();
        clearCheckpointIds(forwardIds);
        currentId = undefined;
        checkpointsChanged = 1;
      });

    const storeUnchanged = () => {
      currentId = arrayPop(backwardIds);