eslint引發錯誤

Question

我是新來的android初學者，並嘗試部署firebase函數，但顯示一些錯誤如何解決此問題，請幫助我。

Firebase數據庫結構

用戶表

• 用戶數
  • 用戶身份
    • device_token：user_device_token
    • 名稱：user_name

通知表

• 通知
  • to_user_id
    • notification_id
      • 來自：from_user_id

錯誤

Index.js

 'use strict' const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(functions.config().firebase); /* * 'OnWrite' works as 'addValueEventListener' for android. It will fire the function * everytime there is some item added, removed or changed from the provided 'database.ref' * 'sendNotification' is the name of the function, which can be changed according to * your requirement */ exports.sendNotification = functions.database.ref('/notifications/{user_id}/{notification_id}').onWrite(event => { /* * You can store values as variables from the 'database.ref' * Just like here, I've done for 'user_id' and 'notification' */ const user_id = event.params.user_id; const notification_id = event.params.notification_id; console.log('We have a notification from : ', user_id); /* * Stops proceeding to the rest of the function if the entry is deleted from database. * If you want to work with what should happen when an entry is deleted, you can replace the * line from "return console.log.... " */ if(!event.data.val()){ return console.log('A Notification has been deleted from the database : ', notification_id); } /* * 'fromUser' query retreives the ID of the user who sent the notification */ const fromUser = admin.database().ref(`/notifications/${user_id}/${notification_id}`).once('value'); return fromUser.then(fromUserResult => { const from_user_id = fromUserResult.val().from; console.log('You have new notification from : ', from_user_id); /* * The we run two queries at a time using Firebase 'Promise'. * One to get the name of the user who sent the notification * another one to get the devicetoken to the device we want to send notification to */ const userQuery = admin.database().ref(`/Users/${from_user_id}/Name`).once('value'); const deviceToken = admin.database().ref(`/Users/${user_id}/device_token`).once('value'); return Promise.all([userQuery, deviceToken]).then(result => { const userName = result[0].val(); const token_id = result[1].val(); /* * We are creating a 'payload' to create a notification to be sent. */ const payload = { notification: { title : "New Friend Request", body: `${userName} has sent you request`, icon: "default", } }; /* * Then using admin.messaging() we are sending the payload notification to the token_id of * the device we retreived. */ return admin.messaging().sendToDevice(token_id, payload).then(response => { console.log('This was the notification Feature'); }); }); }); }); 

** cmd顯示錯誤**

C：\\ Users \\ TahirAliAwan \\ Desktop \\ Function> firebase deploy ===部署到'videochat-96f75'...我正在部署函數運行命令：npm --prefix％RESOURCE_DIR％運行lint函數@ lint C：\\ Users \\ TahirAliAwan \\ Desktop \\ Function \\ functions eslint。 C：\\ Users \\ TahirAliAwan \\ Desktop \\ Function \\ functions \\ index.js 61:11警告避免嵌套promise promise /不嵌套84:14警告避免嵌套promise promise / nonested 84:69錯誤每個then（）應該返回值或拋出承諾/始終返回✖3個問題（1個錯誤，2個警告）npm ERR！ Windows_NT 10.0.10586 npm錯誤！ argv“ C：\\ Program Files \\ nodejs \\ node.exe”“ C：\\ Program Files \\ nodejs \\ node_modules \\ npm \\ bin \\ npm-cli.js”“-前綴”“ C：\\ Users \\ TahirAliAwan \\ Desktop \\ Function \\ functions“” run“” lint“ npm ERR！ 節點v6.11.5 npm ERR！ npm v3.10.10 npm錯誤！ 代碼ELIFECYCLE npm ERR！ functions @ lint： eslint . npm ERR！ 退出狀態1 npm ERR！ npm ERR！ 在functions @ lint腳本“ eslint”處失敗。 npm ERR！ 確保已安裝最新版本的node.js和npm。 npm ERR！ 如果這樣做，這很可能是功能包npm ERR的問題！ 不與npm本身。 npm ERR！ 告訴作者這在您的系統上失敗：npm ERR！ 埃斯林特。 npm ERR！ 您可以通過以下方式獲取有關如何為此項目打開問題的信息：npm ERR！ npm錯誤功能npm錯誤！ 或者，如果不可用，則可以通過以下方式獲取其信息：npm ERR！ npm owner ls函數npm ERR！ 上面可能還有其他日志記錄輸出。 npm ERR！ 請在支持請求中包含以下文件：npm ERR！ C：\\ Users \\ TahirAliAwan \\ Desktop \\ Function \\ npm-debug.log錯誤：函數預部署錯誤：命令以非零退出代碼終止

Answer 1

在@PeterHaddad技巧和我的努力之后，我通過刪除此行.then(response => { console.log('This was the notification Feature'); is .then(response => { console.log('This was the notification Feature');並更新了nodejs。解決了所有問題。