JQ:从JSON中删除空数组

function removeEmptyArraysFromJSON(json) {
  if (typeof json === 'object') {
    if (Array.isArray(json)) {
      // 遍历数组
      for (let i = json.length - 1; i >= 0; i--) {
        const element = json[i];
        if (Array.isArray(element) && element.length === 0) {
          // 删除空数组
          json.splice(i, 1);
        } else {
          // 递归处理非空数组元素
          removeEmptyArraysFromJSON(element);
        }
      }
    } else {
      // 遍历对象的属性
      for (const key in json) {
        const value = json[key];
        if (Array.isArray(value) && value.length === 0) {
          // 删除空数组
          delete json[key];
        } else {
          // 递归处理非空数组属性值
          removeEmptyArraysFromJSON(value);
        }
      }
    }
  }
}

// 示例用法
const json = {
  "name": "John",
  "age": 30,
  "hobbies": [],
  "friends": [
    "Alice",
    [],
    "Bob",
    []
  ],
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "phones": []
  }
};

removeEmptyArraysFromJSON(json);
console.log(JSON.stringify(json));

{
  "name": "John",
  "age": 30,
  "friends": [
    "Alice",
    "Bob"
  ],
  "address": {
    "street": "123 Main St",
    "city": "New York"
  }
}