如何从嵌套数组中删除重复值

function removeDuplicates(nestedArray) {
  let flatArray = nestedArray.flat(); // 将嵌套数组转换为一维数组
  let uniqueArray = [];
  let hashSet = new Set();

  for (let i = 0; i < flatArray.length; i++) {
    if (!hashSet.has(flatArray[i])) {
      hashSet.add(flatArray[i]);
      uniqueArray.push(flatArray[i]);
    }
  }

  return uniqueArray;
}

// 示例用法
let nestedArray = [[1, 2, 3], [4, 5, 6], [1, 2, 3]];
let result = removeDuplicates(nestedArray);
console.log(result); // 输出: [1, 2, 3, 4, 5, 6]