How to export all routes in Express?

Question

I have an NodeJS Express app that is getting really big in just one file (app.js).

I want to export all my routes into a single, external file, say ./lib/routes.j

Answer 1

using glob you can export all routes on directory for example '/routes':

npm i --save glob

    // *** /routes/index.js file ***

    const express = require('express')
    const Router = express.Router
    const router = Router()
    const glob = require('glob')


    /**
     * options ignore files inside routes folder
     */
    const options = {
        ignore: [`${__dirname}/_helpers.js`, `${__dirname}/index.js`]
    }

    /**
     * read all files on current directory and export routes as lowercase of the filename
     * example 'routes/Products.js' route will be access by '/products'
     */
    const routes = 
        glob.sync(__dirname + '/*.js', options)
            .map(filename => {
                const arr = filename.split('/')
                let name = arr.pop();
                name = name.replace('.js', '')
                return {
                    path: `/${name.toLowerCase()}`,
                    router: require(`${filename.replace('.js', '')}`)
                }
            })
            .filter(obj => Object.getPrototypeOf(obj.router) == Router)
            .forEach(obj => router.use(obj.path, obj.router))


    module.exports = router;

then

on app.js

// app.js file

const express = require('express')
const routes = require('./routes')


const app = express()

app.use('/api', routes)