effector antd pager config

pager.ts

export type BaseFilter = {
  offset: number;
};
export type BaseList = {
  count: number;
};

export function pagerConfig(
  pageLimit: number,
  $filter: Store<BaseFilter | null>,
  $list: Store<BaseList | null>
) {
  const doChangePage = createEvent<number>();
  sample({
    clock: doChangePage,
    source: $filter,
    fn: (filter, num) => ({
      ...filter!,
      offset: pageLimit * (num - 1),
    }),
    target: $filter,
  });
  return combine({ $list, $filter }, ({ $list, $filter }) => ({
    current: !!$filter ? $filter.offset / pageLimit + 1 : 1,
    onChange: doChangePage,
    defaultCurrent: 1,
    pageSize: pageLimit,
    total: $list?.count,
    hideOnSinglePage: true,
    showSizeChanger: false,
  }));
}