{"mdn_url":"https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/getUILanguage","source_file":"webextensions/api/i18n.json","support":{"chrome":{"version_added":"35"},"edge":{"version_added":"14"},"firefox":{"notes":"Firefox 55 and earlier returns a language tag that's separated with the underscore character instead of hyphen, see <a href='https://bugzil.la/1374552'>bug 1374552</a>.","version_added":"47"},"firefox_android":{"version_added":"48"},"opera":{"version_added":true},"safari":{"version_added":"14"},"safari_ios":{"version_added":"15"}}}