{"mdn_url":"https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/getMessage","source_file":"webextensions/api/i18n.json","support":{"chrome":{"version_added":"17"},"edge":{"notes":["Throws an exception instead returning an empty string if the message does not exist.","Expects substitutions to be strings, while other browsers allow any value which is then converted to a string."],"version_added":"14"},"firefox":{"notes":"Firefox 47 and earlier returns \"??\" instead of \"\" if the message is not found in _locales, <a href='https://bugzil.la/1258199'>bug 1258199</a> changed this act to match Chrome, landed on Firefox 48.","version_added":"45"},"firefox_android":{"version_added":"48"},"opera":{"version_added":"15"},"safari":{"version_added":"14"},"safari_ios":{"version_added":"15"}}}