fix

src/webpack.js

   target: "web",
   entry: path.resolve(__dirname, 'Frontend.ts'),
   output: {
-      path: path.resolve(__dirname, '..', 'js', 'rpclibrary.browser.js'),
-      filename: "Frontend.js",
-      libraryTarget: 'commonjs',
+    path: path.resolve(__dirname, '..', 'js', 'browser'),
+    filename: "rpclibrary.browser.js",
+    libraryTarget: 'window'
   },
   resolve: {
     extensions: [".ts", ".tsx", ".js"]