mongoose.connect(), first argument should be String, received undefined

Question

I am trying to set the test database for the testing purpose, but its not working.

I am trying to connect to mongodb using mongoose, but finding problem in connection er

Answer 1

in case you've forgotten to import/require dotenv, then you can run dotenv before running your app using --require dotenv/config

node --require dotenv/config index.js // regular node command

// nodemon to restart application whenever a file gets changed
nodemon --require dotenv/config index.js

// integrate with babel-node if you're using latest JS features like import/export
nodemon --require dotenv/config index.js --exec babel-node

No need to require dotenv and call config function within codebase. Enjoy!