Add web front-end and fix API issues

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

@@ -0,0 +1,12 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.throwError = void 0;
+var Observable_1 = require("../Observable");
+var isFunction_1 = require("../util/isFunction");
+function throwError(errorOrErrorFactory, scheduler) {
+    var errorFactory = isFunction_1.isFunction(errorOrErrorFactory) ? errorOrErrorFactory : function () { return errorOrErrorFactory; };
+    var init = function (subscriber) { return subscriber.error(errorFactory()); };
+    return new Observable_1.Observable(scheduler ? function (subscriber) { return scheduler.schedule(init, 0, subscriber); } : init);
+}
+exports.throwError = throwError;
+//# sourceMappingURL=throwError.js.map