Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/util/ArgumentOutOfRangeError.js

@@ -0,0 +1,9 @@
+import { createErrorClass } from './createErrorClass';
+export var ArgumentOutOfRangeError = createErrorClass(function (_super) {
+    return function ArgumentOutOfRangeErrorImpl() {
+        _super(this);
+        this.name = 'ArgumentOutOfRangeError';
+        this.message = 'argument out of range';
+    };
+});
+//# sourceMappingURL=ArgumentOutOfRangeError.js.map