Can I use .env file to load my firebaseconfig? I try to use import but it not work

server.js

    require("dotenv").config();
    const firebaseConfig = {
    apiKey: process.env.APIKEY,
    authDomain: process.env.AUTHDOMAIN,
    databaseURL: process.env.DATABASEURL,
    projectId: process.env.PROJECTID,
    storageBucket: process.env.STORAGEBUCKET,
    messagingSenderId: process.env.MESSAGINSENDERID,
    appId: process.env.APPID,
    };
    console.log(firebaseConfig);

config.env

 APIKEY=key
 AUTHDOMAIN=authdomain
 DATABASEURL=url
 PROJECTID=id
 STRORAGEBUCKET=bucket
 MESSAGINGSENDERID=mid
 APPID=aid

When I console.log(firebaseConfig), all object have undefinded value

{
  apiKey: undefined,
  authDomain: undefined,
  databaseURL: undefined,
  projectId: undefined,
  storageBucket: undefined,
  messagingSenderId: undefined,
  appId: undefined
}