展平子对象的多维数组，但保留依赖项数组

function flattenArrayWithDependencies(arr, dependencies) {
  let result = [];

  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
      let [subArray, subDependencies] = flattenArrayWithDependencies(arr[i], dependencies);
      result = result.concat(subArray);
      dependencies = dependencies.concat(subDependencies);
    } else if (typeof arr[i] === 'object') {
      result.push(arr[i]);
      dependencies.push(i);
    } else {
      result.push(arr[i]);
    }
  }

  return [result, dependencies];
}

// 示例用法
const inputArray = [1, [2, { a: 3, b: [4, 5] }], 6];
const [flattenedArray, dependencyArray] = flattenArrayWithDependencies(inputArray, []);

console.log(flattenedArray);
console.log(dependencyArray);