Add web front-end and fix API issues

node_modules/rxjs/dist/esm/internal/observable/of.js

@@ -0,0 +1,7 @@
+import { popScheduler } from '../util/args';
+import { from } from './from';
+export function of(...args) {
+    const scheduler = popScheduler(args);
+    return from(args, scheduler);
+}
+//# sourceMappingURL=of.js.map