well done

src/web/app/common/scripts/config.js

@@ -0,0 +1,18 @@
+const url = new URL(location.href);
+
+const isRoot = url.host.split('.')[0] == 'misskey';
+
+const host = isRoot ? url.host : url.host.substring(url.host.indexOf('.') + 1, url.host.length);
+const scheme = url.protocol;
+const apiUrl = `${scheme}//api.${host}`;
+const devUrl = `${scheme}//dev.${host}`;
+const aboutUrl = `${scheme}//about.${host}`;
+
+module.exports = {
+	host,
+	scheme,
+	apiUrl,
+	devUrl,
+	aboutUrl,
+	themeColor: '#f76d6c'
+};