Add web front-end and fix API issues

node_modules/rxjs/dist/esm/internal/operators/observeOn.js

@@ -0,0 +1,9 @@
+import { executeSchedule } from '../util/executeSchedule';
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function observeOn(scheduler, delay = 0) {
+    return operate((source, subscriber) => {
+        source.subscribe(createOperatorSubscriber(subscriber, (value) => executeSchedule(subscriber, scheduler, () => subscriber.next(value), delay), () => executeSchedule(subscriber, scheduler, () => subscriber.complete(), delay), (err) => executeSchedule(subscriber, scheduler, () => subscriber.error(err), delay)));
+    });
+}
+//# sourceMappingURL=observeOn.js.map