From 2a7fc8713481e81de2669b566f83781fc39e0367 Mon Sep 17 00:00:00 2001
From: Jari Kolehmainen <jari.kolehmainen@gmail.com>
Date: Sun, 13 Dec 2020 19:11:37 +0200
Subject: [PATCH] Ensure only one app instance (#1742)

* force only one app instance

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

* fix

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>
---
 src/main/index.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/index.ts b/src/main/index.ts
index ea3c53f9b9..1c6b91c2c4 100644
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -45,6 +45,16 @@ if (app.commandLine.getSwitchValue("proxy-server") !== "") {
   process.env.HTTPS_PROXY = app.commandLine.getSwitchValue("proxy-server");
 }
 
+const instanceLock = app.requestSingleInstanceLock();
+
+if (!instanceLock) {
+  app.exit();
+}
+
+app.on("second-instance", () => {
+  windowManager?.ensureMainWindow();
+});
+
 app.on("ready", async () => {
   logger.info(`🚀 Starting Lens from "${workingDir}"`);
   await shellSync();