Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/operators/multicast.js

@@ -0,0 +1,13 @@
+import { ConnectableObservable } from '../observable/ConnectableObservable';
+import { isFunction } from '../util/isFunction';
+import { connect } from './connect';
+export function multicast(subjectOrSubjectFactory, selector) {
+    var subjectFactory = isFunction(subjectOrSubjectFactory) ? subjectOrSubjectFactory : function () { return subjectOrSubjectFactory; };
+    if (isFunction(selector)) {
+        return connect(selector, {
+            connector: subjectFactory,
+        });
+    }
+    return function (source) { return new ConnectableObservable(source, subjectFactory); };
+}
+//# sourceMappingURL=multicast.js.map