Can i have multiple route files in express (nodeJs)

Question

I am trying to put my routes into multiple files to organize based on module. if i only use one file like this all works fine

const apiRoutes = require('./routes/api')
app.use('/api', apiRoutes);

but when i use the below code in my index.js and register 2 files

const apiRoutes = require('./routes/api')
const apiRoutes2 = require('./routes/leads')
app.use(express.json());
app.use('/api', apiRoutes);
app.use('/leads', apiRoutes2);

i get this error

C:\nodeRoot\node_modules\express\lib\router\index.js:458
  throw new TypeError('Router.use() requires a middleware function but got a ' + gettype(fn))
  ^

TypeError: Router.use() requires a middleware function but got a Object
at Function.use (C:\nodeRoot\node_modules\express\lib\router\index.js:458:13)
at Function.<anonymous> (C:\nodeRoot\node_modules\express\lib\application.js:220:21)
at Array.forEach (<anonymous>)

So not sure if you can only register 1 file for routes or what else is causing this issue

This shlould works, show us the routes files. Do you export it properly? — BrTkCa
– BrTkCa, Commented Aug 17, 2018 at 19:06
can we see the exports of './routes/api' and './routes/leads'? Just the export contents, not the entire file. — Jorge Fuentes González
– Jorge Fuentes González, Commented Aug 17, 2018 at 19:13
That was exactly my problem, when i copied the first file to create a second route i forgot the export at the end. Once i added all worked like a charm so it had nothing to do with json or bodyparser but the missing export statement in the second route file — MisterniceGuy
– MisterniceGuy, Commented Aug 17, 2018 at 19:15

dAxx_ · Accepted Answer · 2018-08-17 19:15:01Z

2

I got similar error few days ago, and I forgot to export my router from one of my routes.
Make sure that you are exporting your router from your second routes files.

module.exports = router;

answered Aug 17, 2018 at 19:15

dAxx_

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