Function applyChanges

src/store/index.ts:1719–1755

(changes: Changes)

    );

  const applyChanges = (changes: Changes): Store =>
    fluentTransaction(() =>
      ifTransformed(
        changes,
        () =>
          ifNotUndefined(
            middleware[13],
            (willApplyChanges) =>
              whileMutating(() => willApplyChanges(structuredClone(changes))),
            () => changes,
          ),
        (changes): void => {
          objMap(changes[0], (table, tableId) =>
            isUndefined(table)
              ? delTable(tableId)
              : objMap(table, (row, rowId) =>
                  isUndefined(row)
                    ? delRow(tableId, rowId)
                    : objMap(row, (cell, cellId) =>
                        setOrDelCell(
                          tableId,
                          rowId,
                          cellId,
                          cell as CellOrUndefined,
                          undefined,
                          true,
                        ),
                      ),
                ),
          );
          objMap(changes[1], (value, valueId) =>
            setOrDelValue(valueId, value as ValueOrUndefined),
          );
        },
        contentOrChangesIsEqual,
      ),
    );

  const setTablesJson = (tablesJson: Json): Store => {
    tryCatch(() => setOrDelTables(jsonParse(tablesJson)));