diff --git a/default_app/.eslintrc b/default_app/.eslintrc
new file mode 100644
index 000000000000..7f629e4735d8
--- /dev/null
+++ b/default_app/.eslintrc
@@ -0,0 +1,8 @@
+{
+  "parserOptions": {
+    "sourceType": "script"
+  },
+  "rules": {
+    "strict": ["error", "global"]
+  }
+}
diff --git a/default_app/default_app.js b/default_app/default_app.js
index f09e876de6db..5791139465e1 100644
--- a/default_app/default_app.js
+++ b/default_app/default_app.js
@@ -1,3 +1,5 @@
+'use strict'
+
 const { app, BrowserWindow } = require('electron')
 const path = require('path')
 
diff --git a/default_app/main.js b/default_app/main.js
index 7dc7c847340f..f8a71e347fb7 100644
--- a/default_app/main.js
+++ b/default_app/main.js
@@ -1,3 +1,5 @@
+'use strict'
+
 const { app, dialog } = require('electron')
 
 const fs = require('fs')
diff --git a/default_app/menu.js b/default_app/menu.js
index cc9dd1a324aa..138734b565cb 100644
--- a/default_app/menu.js
+++ b/default_app/menu.js
@@ -1,3 +1,5 @@
+'use strict'
+
 const { shell, Menu } = require('electron')
 
 const isMac = process.platform === 'darwin'
diff --git a/default_app/renderer.js b/default_app/renderer.js
index b971f9fb16e6..2107d798132c 100644
--- a/default_app/renderer.js
+++ b/default_app/renderer.js
@@ -1,3 +1,5 @@
+'use strict'
+
 const { remote, shell } = require('electron')
 const fs = require('fs')
 const path = require('path')