hardhat testing equal bignumber array

// 将数组元素转换为 BigNumber
function BNARR(arr) {
      let newarr = [];
      for (var i = 0; i < arr.length; i++) {
        newarr[i] = ethers.BigNumber.from(arr[i]);
      }
      return newarr;
    }
expect(aa).to.deep.equal([BNARR([1, 2]), BNARR([10, 20])]);