node.js firebase部署错误 [英] node.js firebase deploy error
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问题描述
**当我尝试部署时出现此错误* 我是Java脚本的新手..正在创建带有聊天选项的帖子共享，我想接收来自Firebase的通知，所以我正在使用此代码，但是部署时出现错误，请帮助我，我正在从6小时开始为此寻找解决方案但是我没找到
62:12 warning Avoid nesting promises promise/no-nesting
88:14 warning Avoid nesting promises promise/no-nesting
88:69 error Each then() should return a value or throw promise/always-return
✖ 3 problems (1 error, 2 warnings)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! functions@ lint: `eslint .`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the functions@ lint script.
npm ERR! This is probably not a problem with npm. There is likelyadditional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/alpha/.npm/_logs/2018-05-16T18_06_07_691Z-debug.log
Error: functions predeploy error: Command terminated with non-zero exit code1
Having trouble? Try firebase deploy --help
这是我的node.js(index.js)代码
this is my node.js(index.js) code
'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: `${userName} has sent you request`,
icon: "default",
click_action : "in.tvac.akshaye.lapitchat_TARGET_NOTIFICATION"
},
data : {
from_user_id : from_user_id
}
};
/*
* Then using admin.messaging() we are sending the payload notification to the token_id of
* the device we retreived.
*/
return admin.messaging().sendToDevice(token_id, payload).then(response => {
console.log('This was the notification Feature');
});
});
});
});
推荐答案
此代码重构应该可以解决问题:
This code refactoring should do the trick:
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
/*
* 'OnWrite' works as 'addValueEventListener' for android. It will fire the function
* everytime there is some item added, removed or changed from the provided 'database.ref'
* 'sendNotification' is the name of the function, which can be changed according to
* your requirement
*/
exports.sendNotification = functions.database.ref('/notifications/{user_id}/{notification_id}').onWrite(event => {
/*
* You can store values as variables from the 'database.ref'
* Just like here, I've done for 'user_id' and 'notification'
*/
const user_id = event.params.user_id;
const notification_id = event.params.notification_id;
console.log('We have a notification from : ', user_id);
/*
* Stops proceeding to the rest of the function if the entry is deleted from database.
* If you want to work with what should happen when an entry is deleted, you can replace the
* line from "return console.log.... "
*/
if (!event.data.val()) {
console.log('A Notification has been deleted from the database : ', notification_id);
return false;
}
/*
* 'fromUser' query retreives the ID of the user who sent the notification
*/
const fromUser = admin.database().ref(`/notifications/${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/${user_id}/device_token`).once('value');
return Promise.all([userQuery, deviceToken]);
})
.then(result => {
const userName = result[0].val();
const token_id = result[1].val();
const payload = {
notification: {
title: "New Friend Request",
body: `${userName} has sent you request`,
icon: "default",
click_action: "in.tvac.akshaye.lapitchat_TARGET_NOTIFICATION"
},
data: {
from_user_id: from_user_id
}
};
return admin.messaging().sendToDevice(token_id, payload);
})
.then(response => {
console.log('This was the notification Feature');
return true;
}).catch(error => {
console.log(error);
//any other error treatment
});
});
已更新:1.0版以上的代码
Updated: code for version 1.0+
exports.sendNotification = functions.database.ref('/notifications/{user_id}/{notification_id}').onWrite((change, context) => {
const user_id = context.params.user_id;
const notification_id = context.params.notification_id;
这篇关于node.js firebase部署错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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