{"source_file":"webextensions/manifest/background.json","support":{"chrome":{"notes":"Available for use in Manifest V2 only.","version_added":true},"edge":{"version_added":"14"},"firefox":{"version_added":"48"},"firefox_android":{"version_added":"48"},"opera":{"notes":"Available for use in Manifest V2 only.","version_added":true},"safari":{"notes":"Available for use in Manifest V2 or later.","version_added":"14"},"safari_ios":{"notes":"Available for use in Manifest V2 or later.","version_added":"15"}}}