jws-frontend/src/utils/arr.ts

const arr = { move, removeAt, insertAt };

export function move<T extends any>(arr: T[], idx: number, offset: number) {
  arr.splice(idx + offset, 0, ...arr.splice(idx, 1));
}

export function removeAt<T extends any>(arr: T[], idx: number) {
  return arr.splice(idx, 1);
}

export function insertAt<T extends any>(arr: T[], idx: number, item: T) {
  return arr.splice(idx, 0, item);
}

export default arr;