static getDerivedStateFromProps()

in packages/eui/src/components/basic_table/in_memory_table.tsx [308:400]
85 lines of code
17 McCabe index (conditional complexity)

  static getDerivedStateFromProps<T extends object>(
    nextProps: EuiInMemoryTableProps<T>,
    prevState: State<T>
  ) {
    let updatedPrevState = prevState;
    if (nextProps.items !== prevState.prevProps.items) {
      // We have new items because an external search has completed, so reset pagination state.

      let nextPageIndex = 0;
      if (
        nextProps.pagination != null &&
        typeof nextProps.pagination !== 'boolean'
      ) {
        nextPageIndex = nextProps.pagination.pageIndex || 0;
      }

      updatedPrevState = {
        ...updatedPrevState,
        prevProps: {
          ...updatedPrevState.prevProps,
          items: nextProps.items,
        },
        pageIndex: nextPageIndex,
      };
    }

    // apply changes to controlled pagination
    if (
      nextProps.pagination != null &&
      typeof nextProps.pagination !== 'boolean'
    ) {
      if (
        nextProps.pagination.pageSize != null &&
        nextProps.pagination.pageSize !== updatedPrevState.pageIndex
      ) {
        updatedPrevState = {
          ...updatedPrevState,
          pageSize: nextProps.pagination.pageSize,
        };
      }
      if (
        nextProps.pagination.pageIndex != null &&
        nextProps.pagination.pageIndex !== updatedPrevState.pageIndex
      ) {
        updatedPrevState = {
          ...updatedPrevState,
          pageIndex: nextProps.pagination.pageIndex,
        };
      }
    }

    const { sortName, sortDirection } = getInitialSorting(
      nextProps.columns,
      nextProps.sorting
    );
    if (
      sortName !== prevState.prevProps.sortName ||
      sortDirection !== prevState.prevProps.sortDirection
    ) {
      updatedPrevState = {
        ...updatedPrevState,
        prevProps: {
          ...updatedPrevState.prevProps,
          sortName,
          sortDirection,
        },
        sortName,
        sortDirection,
      };
    }

    const nextQuery = nextProps.search
      ? (nextProps.search as EuiSearchBarProps).query
      : '';
    const prevQuery = prevState.prevProps.search
      ? (prevState.prevProps.search as EuiSearchBarProps).query
      : '';

    if (nextQuery !== prevQuery) {
      updatedPrevState = {
        ...updatedPrevState,
        prevProps: {
          ...updatedPrevState.prevProps,
          search: nextProps.search,
        },
        query: getQueryFromSearch(nextProps.search, false),
      };
    }
    if (updatedPrevState !== prevState) {
      return updatedPrevState;
    }
    return null;
  }