Use idle loop while waiting for Extension Manager

src/extension.js

@@ -18,6 +18,7 @@ this program. If not, see <http s ://www.gnu.org/licenses/>.
 
 'use strict';
 
+const { GLib } = imports.gi;
 const { extensionUtils } = imports.misc;
 
 const Me = extensionUtils.getCurrentExtension();
@@ -52,7 +53,10 @@ function init() {
 }
 
 function enable() {
-    _awaitExtensionManagerInit().then(() => {
+    GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => waitForExtensionManager(start));
+}
+
+function start() {
     logDebug('Enabling extension...');
     settings = new Settings();
     timer = new Timer();
@@ -74,7 +78,6 @@ function enable() {
 
     enabled = true;
     logDebug('Extension enabled.');
-    });
 }
 
 function disable() {
@@ -101,8 +104,11 @@ function disable() {
     logDebug('Extension disabled.');
 }
 
-async function _awaitExtensionManagerInit() {
-    logDebug('Waiting for the Extension Manager to be initialized...');
+function waitForExtensionManager(callback) {
+    logDebug('Waiting for Extension Manager initialization...');
     while (!compat.extensionManagerInitialized())
-        await undefined; // eslint-disable-line no-await-in-loop
+        continue;
+    logDebug('Extension Manager initialized.');
+    callback();
+    return false;
 }