text: const router = require('express').Router();
  
  const userRoutes = require('./user-routes');
  const projectRoutes = require('./project-routes');
  const contributionRoutes = require('./contribution-routes');
  
  router.use('/users', userRoutes);
  router.use('/project', projectRoutes);
  router.use('/contribution', contributionRoutes);
  
  module.exports = router;