Add web front-end and fix API issues

node_modules/rxjs/dist/esm/internal/umd.js

@@ -0,0 +1,12 @@
+export * from '../index';
+import * as _operators from '../operators/index';
+export const operators = _operators;
+import * as _testing from '../testing/index';
+export const testing = _testing;
+import * as _ajax from '../ajax/index';
+export const ajax = _ajax;
+import * as _webSocket from '../webSocket/index';
+export const webSocket = _webSocket;
+import * as _fetch from '../fetch/index';
+export const fetch = _fetch;
+//# sourceMappingURL=umd.js.map