如何在javascript中将对象的嵌套数组转换为数组？

function flattenArray(obj) {
  let result = [];
  
  if (Array.isArray(obj)) {
    for (let i = 0; i < obj.length; i++) {
      result = result.concat(flattenArray(obj[i]));
    }
  } else {
    result.push(obj);
  }
  
  return result;
}

const nestedArray = [1, [2, [3, 4], 5], 6];
const flattenedArray = flattenArray(nestedArray);
console.log(flattenedArray); // [1, 2, 3, 4, 5, 6]

function flattenArray(obj) {
  let result = [];
  const stack = [...obj];
  
  while (stack.length) {
    const next = stack.pop();
    
    if (Array.isArray(next)) {
      stack.push(...next);
    } else {
      result.unshift(next);
    }
  }
  
  return result;
}

const nestedArray = [1, [2, [3, 4], 5], 6];
const flattenedArray = flattenArray(nestedArray);
console.log(flattenedArray); // [1, 2, 3, 4, 5, 6]