Function arrayInsert

packages/core/src/util/array_utils.ts:109–118

(array: any[], index: number, value: any)

 * @param value Value to add to array.
 */
export function arrayInsert(array: any[], index: number, value: any): void {
  ngDevMode && assertLessThanOrEqual(index, array.length, "Can't insert past array end.");
  let end = array.length;
  while (end > index) {
    const previousEnd = end - 1;
    array[end] = array[previousEnd];
    end = previousEnd;
  }
  array[index] = value;
}

/**
 * Same as `Array.splice2(index, 0, value1, value2)` but faster.