Versioned APIs with Express

versionedAPIs.js

// define the versions
var VERSIONS = {'Pre-Production': '/v0', 'Version 1': '/v1'};

// route to display versions
app.get('/', function(req, res) {
    res.json(VERSIONS);
})

// versioned routes go in the routes/ directory
// import the routes
for (var k in VERSIONS) {
    app.use(VERSIONS[k], require('./routes' + VERSIONS[k]));
}