Allow tabris module to parse in browser without packager or client mock

Change-Id: Ia7e4289216debdbcf71248adff12f44b4a9aa004

Author: tbuschto

rollup.tabris.js

@@ -6,7 +6,8 @@ export default {
   input: './src/tabris/main.js',
   output: {
     file: 'build/tabris-bundle.js',
-    format: 'cjs'
+    format: 'cjs',
+    intro: 'if (typeof global === \'undefined\') { window.global = window; }' // May be running in browser
   },
   plugins: [
     typescript({

src/tabris/main.js

@@ -160,6 +160,7 @@ const WHATWG = Object.freeze({
   ImageData,
   ImageBitmap,
   ProgressEvent,
+  Promise,
   Storage,
   WebSocket,
   XMLHttpRequest,
@@ -227,13 +228,22 @@ const OTHER = Object.freeze({
 const tabrisMain = Object.assign(new Tabris(), WIDGETS, POPUPS, WHATWG, NATIVE_OBJECT, UTILS, OTHER);
 
 /** @typedef {typeof tabrisMain} TabrisMain */
-module.exports = tabrisMain;
-// @ts-ignore
-global.tabris = tabrisMain;
-// @ts-ignore
-global.tabris.tabris = tabrisMain;
+if (typeof module !== 'undefined') { // Allow loading in browser
+  module.exports = tabrisMain;
+}
 
-Object.assign(global, WHATWG, {$});
+if (global.document) {
+  // Running in browser
+  global.tabris = tabrisMain;
+  global.JSX = tabrisMain.JSX;
+} else {
+  global.tabris = tabrisMain;
+  global.tabris.tabris = tabrisMain;
+  Object.assign(global, WHATWG, {$});
+  addDOMDocument(global);
+  addDOMEventTargetMethods(global);
+  addWindowTimerMethods(global);
+}
 
 tabrisMain.on('start', (options) => {
   // @ts-ignore
@@ -287,7 +297,3 @@ tabrisMain.on('start', (options) => {
     global.process = tabrisMain.process;
   }
 });
-
-addDOMDocument(global);
-addDOMEventTargetMethods(global);
-addWindowTimerMethods(global);