Add web front-end and fix API issues

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

@@ -0,0 +1,16 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.finalize = void 0;
+var lift_1 = require("../util/lift");
+function finalize(callback) {
+    return lift_1.operate(function (source, subscriber) {
+        try {
+            source.subscribe(subscriber);
+        }
+        finally {
+            subscriber.add(callback);
+        }
+    });
+}
+exports.finalize = finalize;
+//# sourceMappingURL=finalize.js.map