Add web front-end and fix API issues

node_modules/rxjs/dist/cjs/internal/observable/defer.js

@@ -0,0 +1,12 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.defer = void 0;
+var Observable_1 = require("../Observable");
+var innerFrom_1 = require("./innerFrom");
+function defer(observableFactory) {
+    return new Observable_1.Observable(function (subscriber) {
+        innerFrom_1.innerFrom(observableFactory()).subscribe(subscriber);
+    });
+}
+exports.defer = defer;
+//# sourceMappingURL=defer.js.map