javascript - Firestore.settings() 需要一个参数，但文档中所有参数都是可选的？

Question

根据official docs ，firebase.firestore.Settings() 函数的所有参数都是可选的。然而，当我不带参数调用它时，我收到此错误:

Uncaught FirebaseError: Function Firestore.settings() requires 1 argument, but was called with 0 arguments.

如何解决这个问题？

import firebase from 'firebase/app'
import 'firebase/firestore'
if (!firebase.apps.length) {
  const config = {
    apiKey: '...',
    authDomain: '...',
    databaseURL: '...',
    projectId: '...',
    storageBucket: '...',
    messagingSenderId: '...'
  }
  firebase.initializeApp(config)
  firebase.firestore().settings()
}

Answer 1

我认为您正在查看 Settings class properties .

接受 Settings 对象的 Firestore 类实例的 settings(Settings) 方法文档位于 here .

import firebase from 'firebase/app'
import 'firebase/firestore'

if (!firebase.apps.length) {
    const config = {
        apiKey: '...',
        authDomain: '...',
        databaseURL: '...',
        projectId: '...',
        storageBucket: '...',
        messagingSenderId: '...'
    }

    const firebaseApp = firebase.initializeApp(config)
    const firestore = firebase.firestore(firebaseApp)
    firestore.settings({
        //Settings properties
        //cacheSizeBytes: 0,
        //host: '',
        //ssl: true
    })
}