Task 1044 Stage 1

hrusi

I need help on writing this closure function. Can you please explain the closure use case in here in more detail? I think I don't understand closure conceptually, even after going through the "Advanced Functions" chapter again.

Here is the error I am getting:

My middleware.js file:

export const logger = (req, res) => {
    return (next) => {
        next();
    }
}

My server.js file:

import express from 'express';
import {logger} from './middleware.js'

const server = express();

server.get('/', (req, res) => {
  res.send('Learning to use middleware!');
});

server.get('/about', (req, res) => {
  res.send(`I'm going to become a JS Developer in ${new Date().getFullYear()}!`);
});


server.use(logger);

export { server };

Coderslang_Master

hrusi The point of closure is to create a function that captures the outside arguments.
There were a couple of very simple examples in the lecture and following tasks, for example, mutiplyBy.

Your fundamental mistake here is that you've skipped first 3 parameters in the function returned by the logger.

Here's how it should look:

export const logger = (configString) => (req, res, next) => {
...
}

Try to pass this stage and hopefully it'll make more sense in the following stages.