[[coc-settings.json]]の`coc.preferences.formatOnSaveFiletypes`に`reacttypescript`や`reactjavascript`を指定する。 ```json { "coc.preferences.formatOnSaveFiletypes": [ "reacttypescript", "reactjavascript" ] } ``` ## 参考 - [Modern TypeScript and React Development in Vim](https://thoughtbot.com/blog/modern-typescript-and-react-development-in-vim)