Add web front-end and fix API issues

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

@@ -0,0 +1,18 @@
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+import { noop } from '../util/noop';
+import { innerFrom } from '../observable/innerFrom';
+export function distinct(keySelector, flushes) {
+    return operate((source, subscriber) => {
+        const distinctKeys = new Set();
+        source.subscribe(createOperatorSubscriber(subscriber, (value) => {
+            const key = keySelector ? keySelector(value) : value;
+            if (!distinctKeys.has(key)) {
+                distinctKeys.add(key);
+                subscriber.next(value);
+            }
+        }));
+        flushes && innerFrom(flushes).subscribe(createOperatorSubscriber(subscriber, () => distinctKeys.clear(), noop));
+    });
+}
+//# sourceMappingURL=distinct.js.map