Apollo Server cannot use await outside of async function

Question

I am trying to setup Apollo server and am using startStandaloneServer method to start a server but it shows error that await cannot be used outside of async function.

I am using this website as reference startStandaloneServer and this is my code.

import { ApolloServer } from '@apollo/server';
import { startStandaloneServer } from '@apollo/server/standalone';

import { typeDefs } from "./schema.js";
import db from "./_db.js";

const resolvers = {
  Query: {
    games() { return db.games },
    reviews() { return db.reviews },
    authors() { return db.authors }
  }
};

const server = new ApolloServer({
  typeDefs,
  resolvers
});

const { url } = await startStandaloneServer(server); //I am getting an error here

console.log("Server started at port:", 4000);

This is my package.json. I have changed the type to module

{
  "name": "Graphql",
  "version": "0.1.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "node index.js"
  },
  "dependencies": {
    "express": "^4.18.2",
    "@apollo/server": "^4.10.0",
    "graphql": "^16.8.1"
  },
  "engines": {
    "node": "14.x"
  },
  "license": "MIT",
  "type": "module",
  "keywords": [
    "node",
    "glitch"
  ]
}

Answer 1

If you are using typescript you should change target to "ESNext" in tsconfig.json also with type set to "module" in package.json and it should work. That was my case

Answer 2

Make a separate async function and create server init.

async function startApolloServer(server) {
   const { url } = await startStandaloneServer(server);
   console.log(`Server started at ${url}`);
}

startApolloServer(server);