Function mergeContentOrChanges

src/mergeable-store/index.ts:184–269

(
    contentOrChanges: MergeableChanges | MergeableContent,
    isContent: 0 | 1 = 0,
  )

  };

  const mergeContentOrChanges = (
    contentOrChanges: MergeableChanges | MergeableContent,
    isContent: 0 | 1 = 0,
  ): Changes => {
    const tablesChanges = {};
    const valuesChanges = {};
    const [
      [tablesObj, incomingTablesHlc = EMPTY_STRING, incomingTablesHash = 0],
      values,
    ] = contentOrChanges as typeof isContent extends 1
      ? MergeableContent
      : MergeableChanges;
    const [tablesStampMap, valuesStampMap] = contentStampMap;
    const [tableStampMaps, oldTablesHlc, oldTablesHash] = tablesStampMap;

    let tablesHash = isContent ? incomingTablesHash : oldTablesHash;
    let tablesHlc = incomingTablesHlc;
    objForEach(
      tablesObj,
      (
        [rowsObj, incomingTableHlc = EMPTY_STRING, incomingTableHash = 0],
        tableId,
      ) => {
        const tableStampMap = mapEnsure<Id, TableStampMap>(
          tableStampMaps,
          tableId,
          stampNewMap,
        );
        const [rowStampMaps, oldTableHlc, oldTableHash] = tableStampMap;
        let tableHash = isContent ? incomingTableHash : oldTableHash;
        let tableHlc = incomingTableHlc;
        objForEach(rowsObj, (row, rowId) => {
          const [rowHlc, oldRowHash, rowHash] = mergeCellsOrValues(
            row,
            mapEnsure<Id, RowStampMap>(rowStampMaps, rowId, stampNewMap),
            objEnsure<IdObj<CellOrUndefined>>(
              objEnsure<IdObj<IdObj<CellOrUndefined>>>(
                tablesChanges,
                tableId,
                objNew,
              ),
              rowId,
              objNew,
            ),
            isContent,
          );

          tableHash ^= isContent
            ? 0
            : addOrRemoveHash(
                oldRowHash ? getValueInValuesHash(rowId, oldRowHash) : 0,
                getValueInValuesHash(rowId, rowHash),
              );
          tableHlc = getLatestHlc(tableHlc, rowHlc);
        });

        tableHash ^= isContent
          ? 0