Initialize IPC channels early

app/attachment_channel.js

@@ -19,7 +19,7 @@ const ERASE_TEMP_KEY = 'erase-temp';
 const ERASE_DRAFTS_KEY = 'erase-drafts';
 const CLEANUP_ORPHANED_ATTACHMENTS_KEY = 'cleanup-orphaned-attachments';
 
-async function initialize({ configDir, cleanupOrphanedAttachments }) {
+function initialize({ configDir, cleanupOrphanedAttachments }) {
   if (initialized) {
     throw new Error('initialze: Already initialized!');
   }

main.js

@@ -1247,6 +1247,23 @@ app.on('ready', async () => {
     loadingWindow.loadURL(prepareFileUrl([__dirname, 'loading.html']));
   });
 
+  try {
+    await attachments.clearTempPath(userDataPath);
+  } catch (err) {
+    logger.error(
+      'main/ready: Error deleting temp dir:',
+      err && err.stack ? err.stack : err
+    );
+  }
+
+  // Initialize IPC channels before creating the window
+
+  attachmentChannel.initialize({
+    configDir: userDataPath,
+    cleanupOrphanedAttachments,
+  });
+  sqlChannels.initialize(sql);
+
   // Run window preloading in parallel with database initialization.
   await createWindow();
 
@@ -1282,7 +1299,6 @@ app.on('ready', async () => {
 
   // eslint-disable-next-line more/no-then
   appStartInitialSpellcheckSetting = await getSpellCheckSetting();
-  await sqlChannels.initialize(sql);
 
   try {
     const IDB_KEY = 'indexeddb-delete-needed';
@@ -1330,19 +1346,6 @@ app.on('ready', async () => {
     });
   }
 
-  try {
-    await attachments.clearTempPath(userDataPath);
-  } catch (err) {
-    logger.error(
-      'main/ready: Error deleting temp dir:',
-      err && err.stack ? err.stack : err
-    );
-  }
-  await attachmentChannel.initialize({
-    configDir: userDataPath,
-    cleanupOrphanedAttachments,
-  });
-
   ready = true;
 
   if (usingTrayIcon) {