Enforce style, split build into build and server, parametrize build.js and server.js

server.js

@@ -0,0 +1,37 @@
+const path = require('path');
+const express = require('express');
+
+const app = express();
+
+const BUILDDIR = process.argv[2] || './build';
+const PORT = process.argv[3] || 3000;
+
+//ROUTE - index.htm
+app.get('/', (req, res) => { 
+    res.sendFile(path.join(__dirname, BUILDDIR, 'index.htm'), {}, function (err) {
+        if(err){
+            console.log('error sending file',err);
+        } else {
+            setTimeout(()=>{
+                console.log('closing server');
+                server.close();
+                process.exit();
+            },1000*10);
+        }
+    });
+});
+
+//ROUTE - other files
+app.use(express.static(path.join(__dirname, BUILDDIR)));
+
+//start server
+var server = app.listen(PORT, () => {
+    console.log(`\nTemp server started at http://localhost:${PORT}!`);
+    //console.log('press ctrl+c to stop ');
+
+    var opn = require('opn');
+
+    // opens the url in the default browser
+    opn(`http://localhost:${PORT}`);
+});
+