From e323625ccac65bfb4f166a9563ff25749d605905 Mon Sep 17 00:00:00 2001
From: rhysd <lin90162@yahoo.co.jp>
Date: Thu, 20 Apr 2017 00:21:23 +0900
Subject: [PATCH] fix IPC event handling on macOS

---
 renderer/ipc.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/renderer/ipc.ts b/renderer/ipc.ts
index a36fbc8..82bd699 100644
--- a/renderer/ipc.ts
+++ b/renderer/ipc.ts
@@ -4,8 +4,13 @@ const electron = r('electron');
 const ipc = electron.ipcRenderer;
 
 export function on(channel: IpcChannelFromMain, callback: (...args: any[]) => void) {
-    ipc.on(channel, (_, ...args: any[]) => {
+    ipc.on(channel, (...args: any[]) => {
         log.info('IPC: Received from:', channel, args);
+        // XXX: Weird...
+        // First element is Event in Windows as documented. But not in macOS.
+        if (args[0] instanceof Event) {
+            args = args.splice(1);
+        }
         callback(...args);
     });
 }