Function range

examples/react/row-dnd/src/makeData.ts:14–20

(len: number)

}

const range = (len: number) => {
  const arr: number[] = []
  for (let i = 0; i < len; i++) {
    arr.push(i)
  }
  return arr
}

const newPerson = (): Person => {
  return {