NodeJs : TypeError: require(...) is not a function

Question

I am trying to require a file and afterwards pass it to a var. I am following this tutorial to create an authentication system. After writing the server.js file and trying to compile I got a BSON error therefore I changed the line that required the release version of it in mongoose.

Here are my code and error:

server.js

require('./app/routes')(app, passport); 

Error

require('./app/routes')(app, passport);                    ^  TypeError: require(...) is not a function            at Object.<anonymous> (d:\Node JS learning\WorkWarV2\server.js:38:24)            at Module._compile (module.js:434:26)            at Object.Module._extensions..js (module.js:452:10)            at Module.load (module.js:355:32)            at Function.Module._load (module.js:310:12)            at Function.Module.runMain (module.js:475:10)            at startup (node.js:117:18)            at node.js:951:3  Process finished with exit code 1 

I have read that this usually means that requireJS is not getting loaded properly yet I am not aware why or how to fix it.

Edit due to comment:

As asked, here is the result of console.log(require);

Answer 1

For me, when I do Immediately invoked function, I need to put ; at the end of require().

Error:

const fs = require('fs')  (() => {   console.log('wow') })() 

Good:

const fs = require('fs');  (() => {   console.log('wow') })()