Add web front-end and fix API issues

node_modules/rxjs/dist/cjs/internal/operators/publishLast.js

@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.publishLast = void 0;
+var AsyncSubject_1 = require("../AsyncSubject");
+var ConnectableObservable_1 = require("../observable/ConnectableObservable");
+function publishLast() {
+    return function (source) {
+        var subject = new AsyncSubject_1.AsyncSubject();
+        return new ConnectableObservable_1.ConnectableObservable(source, function () { return subject; });
+    };
+}
+exports.publishLast = publishLast;
+//# sourceMappingURL=publishLast.js.map