node 中在终端打印对象的问题?

Question

下面是 nextjs 中 Route Handlers 的代码

export async function GET(request: Request) {
  console.log(request)
  console.log(request.method)
  return Response.json({
    message: 'hello world'
  })
}

如果打印 request,会输出以下的信息

NextRequest [Request] {
  [Symbol(realm)]: {
    settingsObject: { baseUrl: undefined, origin: [Getter], policyContainer: [Object] }
  },
  [Symbol(state)]: {
    method: 'GET',
    localURLsOnly: false,
    unsafeRequest: false,
    body: null,
    client: { baseUrl: undefined, origin: [Getter], policyContainer: [Object] },
    reservedClient: null,
    replacesClientId: '',
    window: 'client',
    keepalive: false,
    serviceWorkers: 'all',
    initiator: '',
    destination: '',
    priority: null,
    origin: 'client',
    policyContainer: 'client',
    referrer: 'client',
    ...

可以直接 console.log(request.method) 打印出 GET。那么像 [Symbol(state)] 这些属性怎么添加上去的,一般理解 [Symbol(state)] 应该是一个属性,那么访问 method 应该是 request[Symbol(state)].method 。如果给出一个普通对象,例如 {a: 5},那么怎样可以让 console.log() 输出类似的效果? 还有 [Request] 这些装饰是怎么添加进去的?