diff --git a/ext/static_files/init.js b/ext/static_files/init.js
index d45f34e3..5cd4e5f8 100644
--- a/ext/static_files/init.js
+++ b/ext/static_files/init.js
@@ -4,3 +4,13 @@ function shm_cookie_set(name, value) {
 function shm_cookie_get(name) {
 	return Cookies.get(name);
 }
+
+function shm_log(...message) {
+    window.dispatchEvent(new CustomEvent("shm_log", {detail: {message: message}}));
+}
+window.addEventListener("shm_log", function (e) {
+    console.log(...e.detail.message);
+});
+window.addEventListener("error", function (e) {
+    shm_log("Window error:", e.error);
+});