The commit in question, made on 16th July, uses the term "OfficeISS". I can find no mention of this online. Is this a straightforward code-name for their project to re-write their major apps in React, mentioned in the following tweet? <a href="https://twitter.com/TheLarkInn/status/1006746626617008128" rel="nofollow">https://twitter.com/TheLarkInn/status/1006746626617008128</a><p>I asked for clarification on how they were approaching macOS support in React Native, both:<p>1) in that Twitter thread (to no answer): <a href="https://twitter.com/LinguaBrowse/status/1006834843416657920" rel="nofollow">https://twitter.com/LinguaBrowse/status/1006834843416657920</a><p>2) and in the subsequent Reddit discussion: <a href="https://www.reddit.com/r/programming/comments/8qqhlz/office_365_ms_teams_skype_code_and_the_edge_debug/e0lr0k1/" rel="nofollow">https://www.reddit.com/r/programming/comments/8qqhlz/office_...</a> (to an answer ignoring the macOS part of my question).<p>Microsoft are clearly going all-in on React Native:<p>1) TypeScript 3 has plenty of oddly React-specific features (e.g. defaultProps and PropTypes support): <a href="https://blogs.msdn.microsoft.com/typescript/2018/07/30/announcing-typescript-3-0/#default-props-support" rel="nofollow">https://blogs.msdn.microsoft.com/typescript/2018/07/30/annou...</a><p>2) react-native-windows is thriving: <a href="https://github.com/Microsoft/react-native-windows" rel="nofollow">https://github.com/Microsoft/react-native-windows</a><p>3) WinObjC is looking formidable: <a href="https://github.com/Microsoft/WinObjC" rel="nofollow">https://github.com/Microsoft/WinObjC</a><p>I think the future is bright for Microsoft, cross-platform development, and the React universe..!