flashlang/src/manifest.json

{
	"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"
	},
	"options_ui": {
		"page": "options.html",
		"open_in_tab": true
	},
	"background": { "scripts": ["background.bundle.js"] },
	"permissions": [
		"<all_urls>",
		"sessions",
		"webRequest",
		"webRequestBlocking",
		"storage"
	]
}