js 多维数组去重

let list = [
  1,1,5,
  [1,1,6],
  [1,1,7,[1,1,78]]
];
let newList = [];
newList = getList(list);
console.log(newList);

// 多维数组去重
getList(arr) {
  for (let i=0; i<arr.length; i++) {
    if (Array.isArray(arr[i])) {


      arr[i] = Array.from(new Set(arr[i]))
      getList(arr[i]);
    }
  };
  arr = Array.from(new Set(arr));
  return arr
}