{ "manifest_version": 2, "name": "Firefox extension example", "description": " extension written in PureScript", "version": "0.1.0", "browser_specific_settings": { "gecko": { "id": "new_ext@mozilla.org" } }, "content_scripts": [ { "matches": ["*://*/*"], "js": ["content.js"] } ], "background": { "scripts": ["background.js"], "persistent": true }, "permissions": ["tabs", "storage"] }