声明并初始化二维数组typescript

let arr: number[][] = [
  [1, 2, 3],
  [4, 5, 6],
  [7, 8, 9]
];

function create2DArray(rows: number, cols: number, initialValue: any): any[][] {
  let arr: any[][] = new Array(rows);

  for (let i = 0; i < rows; i++) {
    arr[i] = new Array(cols).fill(initialValue);
  }

  return arr;
}

let myArray: number[][] = create2DArray(3, 3, 0);

let rows = 3;
let cols = 3;
let initialValue = 0;

let myArray: number[][] = Array.from({ length: rows }, () => Array(cols).fill(initialValue));