Always run initialization code on browser start

extension/main.js

@@ -114,6 +114,9 @@ async function start(omnibox) {
 
     if (!omnibox.extensionMode) return;
 
+    // NOTE: this kind of async registration is specifically discouraged in manifest v2
+    // not sure if it works properly in v3? https://developer.chrome.com/docs/extensions/mv2/background-pages#listeners
+    // See also https://developer.chrome.com/docs/extensions/develop/migrate/to-service-workers#register-listeners
     chrome.storage.onChanged.addListener(async changes => {
         for (let [key, { oldValue, newValue }] of Object.entries(changes)) {
             console.log('storage key updated:', key);

extension/service-worker.js

@@ -50,9 +50,12 @@ chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
     return true;
 });
 
-(async () => {
+async function init() {
     const defaultSuggestion = `Search std <match>docs</match>, external <match>docs</match> (~,@), <match>crates</match> (!), <match>attributes</match> (#), <match>books</match> (%), clippy <match>lints</match> (>), and <match>error codes</match>, etc in your address bar instantly!`;
     const omnibox = Omnibox.extension({ defaultSuggestion, maxSuggestionSize: Compat.omniboxPageSize() });
     await start(omnibox);
     await checkAutoUpdate();
-})();
+}
+
+chrome.runtime.onStartup.addListener(init);
+chrome.runtime.onInstalled.addListener(init);