Added build option to wrap in UMD declaration. issue #34

utils/build_gui.js

@@ -4,5 +4,8 @@ require('./builder.js').build({
    "out": "../build/dat.gui.js",
    "minify": false,
    "shortcut": "dat.GUI",
-   "paths": {}
+   "paths": {},
-});
+   "umd": {
+        ret: 'dat'
+   }
+});

utils/builder.js

@@ -110,6 +110,10 @@ function build(_params) {
 
   to_write += params.shortcut + ' = ' + params.main.replace(/\//g, '.') + ' = ' + defined[params.main].getClosure() + ';';
 
+  if ( params.umd ){
+    to_write = wrap_umd( params.shortcut.split('.')[0], to_write + '\nreturn '+params.umd.ret+';' );
+  }
+
   if (params.verbose) console.log('Exported: ' + params.main + ' to window.' + params.shortcut);
 
   if (params.minify) {
@@ -226,6 +230,29 @@ function define(deps, callback) {
 
 }
 
+/**
+ * Wrap the source code in a UMD declaration
+ * @param {String} name The root namespace (for browser global definition)
+ * @param  {String} src Source code text
+ * @return {String}
+ */
+function wrap_umd( name, src ){
+
+  return [
+    "(function (root, factory) {",
+    "  if (typeof define === 'function' && define.amd) {",
+    "    // AMD. Register as an anonymous module.",
+    "    define(factory);",
+    "  } else {",
+    "    // Browser globals",
+    "    root."+ name +" = factory();",
+    "  }",
+    "}(this, function () {",
+      src.replace(/\n/g,'\n  '),
+    "}));\n"
+  ].join('\n');
+}
+
 function file_exists(path) {
   try {
     var stats = fs.lstatSync(path)