IIFE updates (#384)

* Remove most IIFEs

* Move IIFEs into functions

* Don't await background-main

2 files changed, 11 insertions, 5 deletions

diff --git a/ext/js/background/background-main.js b/ext/js/background/background-main.js
index 8e32a53f..29c256d3 100644
--- a/ext/js/background/background-main.js
+++ b/ext/js/background/background-main.js
@@ -19,9 +19,12 @@
 import {yomitan} from '../yomitan.js';
 import {Backend} from './backend.js';
 
-(() => {
+/** Entry point. */
+async function main() {
     yomitan.prepare(true);
 
     const backend = new Backend();
-    backend.prepare();
-})();
+    await backend.prepare();
+}
+
+main();
diff --git a/ext/js/background/offscreen-main.js b/ext/js/background/offscreen-main.js
index dcbf978f..f85908bd 100644
--- a/ext/js/background/offscreen-main.js
+++ b/ext/js/background/offscreen-main.js
@@ -18,6 +18,9 @@
 
 import {Offscreen} from './offscreen.js';
 
-(() => {
+/** Entry point. */
+async function main() {
     new Offscreen();
-})();
+}
+
+await main();