vue-material-kit/appserver/db.js

var users  = require('./users.json');
// var secondRoute = require('./jsonfile2.json');
// var thirdRoute  = require('./jsonfile3.json');
// var fourthRoute = require('./jsonfile4.json');
// and so on

module.exports = function() {
return {
    users  : users,
// secondRoute : secondRoute,
// thirdRoute  : thirdRoute,
// fourthRoute : fourthRoute
// and so on
 }
}