creacion del subir el archivo

app.js

@@ -1,6 +1,7 @@
 var express = require('express');
 var app = express();
 var cors = require('cors');
+var clave = require('./routes/check_clave.js');
 app.get('/', function(req, res) {
     res.send('Hello World!');
 });
@@ -9,6 +10,8 @@ app.use(cors());
 app.use(express.json()) // for parsing application/json
 app.use(express.urlencoded({ extended: true }))
 app.use(require('./routes/index.js'))
+
 app.listen(process.env.PORT, function() {
+    //clave();
     console.log('Example app listening on port ' + process.env.PORT + '!');
 });