pagination-front-end/src/utils/filterPagination.ts

pagination-front-end é uma biblioteca voltada para realização de paginação no front end( pagination-front-end is a front-end paging library)

import { FilterPaginationResult } from '../types'
import { normalizePageSize } from './normalize'

const filterPagination = <T>(
  items: T[] | null | undefined,
  pageSize: number,
  currentPage: number
): FilterPaginationResult<T> => {
  if (!items?.length) {
    return { contentItems: [] }
  }

  const safePageSize = normalizePageSize(pageSize)
  const startIndex = (currentPage - 1) * safePageSize

  return {
    contentItems: items.slice(startIndex, startIndex + safePageSize),
  }
}

export default filterPagination