我尝试部署fireabase示例,但是当我尝试部署它时,CLI会启动错误:
[CODE]
const functions = require('firebase-functions'); //to activate firebase functions
const admin = require('firebase-admin'); //to active firebase database permissions
admin.initializeApp(functions.config().firebase);
exports.addMessage = functions.https.onRequest((req, res) => {
// [END addMessageTrigger]
// Grab the text parameter.
const original = req.query.text;
// [START adminSdkPush]
// Push the new message into the Realtime Database using the Firebase Admin SDK.
admin.database().ref('/messages').push({original: original}).then(snapshot => {
// Redirect with 303 SEE OTHER to the URL of the pushed object in the Firebase console.
res.redirect(303, snapshot.ref);
});
// [END adminSdkPush]
});
[ERROR]
15:3 error Expected catch() or return promise/catch-or-return
15:69 error Each then() should return a value or throw promise/always-return
✖ 2 problems (2 errors, 0 warnings)
npm ERR! Darwin 17.4.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "--prefix" "/Users/user/test/functions" "run" "lint"
npm ERR! node v6.10.2
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! functions@ lint: `eslint .`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the functions@ lint script 'eslint .'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the functions package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! eslint .
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs functions
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls functions
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! /Users/eliassebastian/Developer/npm-debug.log
Error: functions predeploy error: Command terminated with non-zero exit code1
我看一下firebase here
提供的原始决赛我是Javascript和整个世界的新人,所以我真的迷失了这类消息。
我该如何解决这个问题?
答案 0 :(得分:20)
ESLint警告是合法的。要获得每个详细信息,您可以使用其唯一ID进行搜索。例如:
15:3 error Expected catch() or return promise/catch-or-return
此处警告的ID为promise/catch-or-return
。谷歌搜索“eslint promise / catch-or-return”查找描述警告的a plugin for ESLint:
强制在未归还的承诺上使用catch()
您收到此消息是因为您已从then
返回承诺,但您永远不会return
或catch
出现错误。
第二个警告:
15:69 error Each then() should return a value or throw promise/always-return
来自同一个ESLint插件,如下所示:
返回每个then()以创建可读和可重用的Promise链。
它要求你在then
调用的每个函数中返回一个值,即使你没有任何特殊的值发送到下一个promise链。
您可以像这样解决这两个问题:
admin.database().ref('/messages').push({original: original}).then(snapshot => {
res.redirect(303, snapshot.ref);
return null;
}).catch(error => {
console.error(error);
res.error(500);
});
请注意,then
块现在返回null,catch
用于从then
返回的promise以捕获错误并向客户端发送错误响应。
答案 1 :(得分:0)
道格·史蒂文森的回答部分正确,因为其中存在一个缺陷。
应该是:
manWrkbk
当云函数返回空值时,它进入了无限循环。结果,我们在上图中看到函数在60,000 ms之后超时。
在执行了多个这样的超时功能后,您将收到错误可以执行的功能(如上图所示)。这是因为在Spark计划(免费套餐)中, CPUMilliSecondsDailyNonbillable 受到限制。
如果单击“云功能”部分的Stackdriver's Quota Policy,则可以在GCD(Google Cloud Platform)中看到限制