Create a Basic Framework with Express (Part 1.1)

In Part 1, error handling was created. Let's make it easier to throw errors.
Instead of

let error = new Error('This is a major issue!!')
error.statusCode = 500
throw error

We will make it something like this

throw new ServerError({ message: 'This is a major issue!!' })

1. Create a new folder exceptions

2. Create ServerError.js in the exceptions folder
   

   class ServerError extends Error {
     constructor(resource) {
       super()
       this.name = this.constructor.name // good practice
       this.statusCode = 500
       this.message = resource ? resource.message : 'Server Error'
     }
   }
   module.exports = {
     ServerError
   }
   

3. Edit index.js, on how to use it
   

   // index.js
   ...
   const { ServerError } = require('./exceptions/ServerError')
   ...
   app.get('/error', async (req, res, next) => {
       try {
           throw new ServerError()
           // or
          // throw new ServerError({ message: 'A huge mistake happened!' })
       } catch (error) {
           return next(error)
       }
   })
   ...
   

4. Now go to localhost:3000/error to see the 500 server error