如何在数组项中获取嵌套属性的映射类型？

function getNestedPropertyMapping(array) {
  let mapping = {};

  function processItem(item) {
    if (typeof item !== "object" || Array.isArray(item)) {
      return;
    }

    for (let key in item) {
      if (typeof item[key] === "object") {
        processItem(item[key]);
      } else {
        mapping[key] = typeof item[key];
      }
    }
  }

  array.forEach((item) => {
    processItem(item);
  });

  return mapping;
}

// 示例用法
const items = [
  { id: 1, name: "John", age: 25, address: { city: "New York" } },
  { id: 2, name: "Jane", age: 30, address: { city: "London" } },
  { id: 3, name: "Bob", age: 35, address: { city: "Tokyo" } },
];

const propertyMapping = getNestedPropertyMapping(items);
console.log(propertyMapping);