Unify, improve development environment

development_server.js

@@ -0,0 +1,49 @@
+var rollup = require( 'rollup' );
+var nodeResolve = require('rollup-plugin-node-resolve');
+var commonjs = require('rollup-plugin-commonjs');
+var json = require('rollup-plugin-json');
+var http = require('http');
+var gaze = require('gaze');
+var ecstatic = require('ecstatic');
+
+var cache;
+var building = false;
+
+function build() {
+  if (building) return;
+  building = true;
+  console.log('Rebuilding');
+  console.time('Rebuilt');
+  rollup.rollup({
+    entry: './modules/id.js',
+    cache: cache,
+    plugins: [
+        nodeResolve({ jsnext: true, main: true, browser: false }),
+        commonjs(),
+        json()
+    ]
+  }).then(function (bundle) {
+    console.timeEnd('Rebuilt');
+    cache = bundle;
+    bundle.write({
+      format: 'iife',
+      dest: 'dist/iD.js'
+    });
+    building = false;
+  });
+}
+
+if (process.argv[2] === 'develop') {
+    build();
+    gaze('modules/**.js', function(err, watcher) {
+        watcher.on('all', function() {
+            build();
+        });
+    });
+    http.createServer(
+      ecstatic({ root: __dirname })
+    ).listen(8080);
+    console.log('Listening on :8080');
+} else {
+    build();
+}