{ "browser_specific_settings": { "gecko": { "id": "addon@example.com", "strict_min_version": "42.0" } }, "name": "Lingo", "manifest_version": 2, "version": "0.1", "browser_action": { "browser_style": true, "default_popup": "popup.html" }, "background": { "scripts": ["background.bundle.js"] }, "permissions": ["", "sessions"] }