The WebExtensions API has a rather handy module available for internationalizing extensions — i18n. In this article we'll explore its features and provide a practical example of how it works. The i18n system for extensions built using WebExtension APIs is similar to common JavaScript libraries for i18n such as i18n.js...."name": "__MSG_extensionName__", "description": "__MSG_extensionDescription__"...underscores, followed by The string "MSG", followed by One underscore...