Bug fixes

public/js-source/utils/utils.ts

@@ -0,0 +1,23 @@
+import {WaitForSync} from './resolvable';
+
+export interface ClientConfig {
+	EXTERNAL_BASE_URL: string
+}
+
+let config: ClientConfig|undefined;
+const configWaiter = new WaitForSync<ClientConfig>();
+
+export function setConfig(clientConfig: ClientConfig): void {
+	config = clientConfig;
+	configWaiter.setData(config);
+}
+
+export function getConfig(): Promise<ClientConfig> {
+	return configWaiter.resolve();
+}
+
+export async function getUserInfo(): Promise<UserInfo|undefined> {
+	const config = await getConfig();
+	const res = await fetch(config.EXTERNAL_BASE_URL + "/api/user");
+	return res.json();
+}