Merge pull request #7227 from electron/felix-cmd-strings

Ensure correct types for commandLine

lib/browser/api/app.js

@@ -24,8 +24,18 @@ Object.assign(app, {
     return Menu.getApplicationMenu()
   },
   commandLine: {
-    appendSwitch: bindings.appendSwitch,
+    appendSwitch (...args) {
-    appendArgument: bindings.appendArgument
+      const castedArgs = args.map((arg) => {
+        return typeof arg !== 'string' ? `${arg}` : arg
+      })
+      return bindings.appendSwitch(...castedArgs)
+    },
+    appendArgument (...args) {
+      const castedArgs = args.map((arg) => {
+        return typeof arg !== 'string' ? `${arg}` : arg
+      })
+      return bindings.appendArgument(...castedArgs)
+    }
   }
 })