遇到错误ReferenceError: regeneratorRuntime在netlify上没有为Expressjs

Question

大家下午好!我有一个在netflix上托管的react应用程序，并将我的Expressjs API后端转换为无服务器的Netlify函数。现在我遇到了下面的错误:

502: ReferenceError: regeneratorRuntime is not defined", " at /var/task/server.js"

Server.js是导入中间件的主要API文件。我已经安装了babel生成器插件，并将其添加到我的babel文件中，并将其导入到我的Server.js文件的顶部。我不知道还能做什么，因为我是新来的netflix平台。

Server.js

import "core-js/stable";
import "regenerator-runtime/runtime";
const express = require('express');
var expressSession = require('express-session');
const cors = require('cors');
const path = require('path');
const app = express();
const axios = require('axios');
const mongoose = require('mongoose');
const rateLimit = require("express-rate-limit");
const serverless = require('serverless-http');
require('dotenv').config()

// Middleware
const saveLoggedInUserMiddleware = require('../Middleware/SaveLoggedInUserMiddleware');
const hostValidationMiddleware = require('../Middleware/HostValidationMiddleware');
const sessionValidationMiddleware = require('../Middleware/SessionValidationMiddleware');
const updateUserDataMiddleware = require('../Middleware/UpdateUserDataMiddleware');
//Routers
const StoreInvoiceRouter = require('../Routes/Store-Update-Invoices');
const UserInvoicesRouter = require('../Routes/GetUserInvoices');
const UpdateUserProfileRouter = require('../Routes/UpdateUserProfile');

async function connectToDB() {

// Database 
await mongoose.connect(process.env.mongo_url, { useNewUrlParser: true, useUnifiedTopology: true },  () => {

console.log('[connectToDB]: Connected to DB'); 
})

}
connectToDB();
// Implemented a rate limiter which is a TEMPORARY FIX for the infinite loop by the useEffect
const limiter = rateLimit({
windowMs: .1 * 60 * 1000, // 10 seconds limit
max: 4 
});
// Creating the session in order to save user data to req.session
app.use(
expressSession({
secret: process.env.SESSION_SECRET,
resave: false,
saveUninitialized: false,
})
);
app.use('/fetchUserInvoices', limiter);
app.use(express.json());
//app.use(cors());
app.use(express.static('./build'));
app.use('/.netlify/functions/', hostValidationMiddleware, sessionValidationMiddleware, StoreInvoiceRouter);
app.use('/.netlify/functions/', saveLoggedInUserMiddleware, UserInvoicesRouter);
app.use('/.netlify/functions/', updateUserDataMiddleware, UpdateUserProfileRouter);

app.get('*', async (req,res) => {
res.sendFile('/Users/augustshah/Documents/Coding-Tools-new/Projects/Payment-Dashboard/build/index.html');
});


// Function makes call to endpoint that runs deletion login, this allows the client to only have to be refreshed once to
// render changes on the frontend.
async function updateDBCall() {

const url = `${process.env.REACT_APP_STORE_INVOICES}`;
const axiosConfig = {
method: 'get',
url
};
await  axios(axiosConfig).catch((e) => {console.log(e)});
console.log('[updateDBCall]: Executed call to STORE_INVOICES')
};

// Supporting functions
updateDBCall(); 



app.listen(process.env.PORT || 8080, () => {
console.log(`Server listening on 8080`);
});
module.exports.handler = serverless(app);

babel.config.js

module.exports = api => {
api.cache.forever();
return {
presets: [
"@babel/preset-env",
"@babel/preset-react"
],
plugins: [
"add-react-displayname",
"@babel/plugin-proposal-class-properties",
"@babel/plugin-proposal-object-rest-spread",
"@babel/transform-runtime"
]
};
}

Answer 1

将我的babel更改为以下内容，并安装并实现了netlify-lambda

module.exports = api => {
api.cache.forever();
return {
"presets": [
[ "@babel/preset-env", {
"targets": {
"node": "8.10"
}
}]
],
plugins: [
"add-react-displayname",
"@babel/plugin-proposal-class-properties",
"@babel/plugin-proposal-object-rest-spread"
]
};
}