my-links/src/utils/array.ts

import { i18n } from 'next-i18next';

export function groupItemBy(array: any[], property: string) {
  const hash = {};
  const props = property.split('.');

  for (const item of array) {
    const key = props.reduce((acc, prop) => acc && acc[prop], item);
    const hashKey =
      key !== undefined ? key : i18n.t('common:category.categories');

    if (!hash[hashKey]) {
      hash[hashKey] = [];
    }

    hash[hashKey].push(item);
  }

  return hash;
}

// Thanks S/O
export function arrayMove<T>(
  arr: T[],
  previousIndex: number,
  nextIndex: number,
): T[] {
  const arrayCopy = [...arr];
  const [removedElement] = arrayCopy.splice(previousIndex, 1);

  if (nextIndex >= arr.length) {
    // Pad the array with undefined elements if needed
    const padding = nextIndex - arr.length + 1;
    arrayCopy.push(...new Array(padding).fill(undefined));
  }

  arrayCopy.splice(nextIndex, 0, removedElement);
  return arrayCopy;
}