Function fetchData

examples/react/virtualized-infinite-scrolling/src/makeData.ts:63–89

(
  start: number,
  size: number,
  sorting: SortingState
)

//simulates a backend api
export const fetchData = async (
  start: number,
  size: number,
  sorting: SortingState
) => {
  const dbData = [...data]
  if (sorting.length) {
    const sort = sorting[0] as ColumnSort
    const { id, desc } = sort as { id: keyof Person; desc: boolean }
    dbData.sort((a, b) => {
      if (desc) {
        return a[id] < b[id] ? 1 : -1
      }
      return a[id] > b[id] ? 1 : -1
    })
  }

  //simulate a backend api
  await new Promise(resolve => setTimeout(resolve, 200))

  return {
    data: dbData.slice(start, start + size),
    meta: {
      totalRowCount: dbData.length,
    },
  }
}