The ES2015 specification is fairly recent (2015), so some editors don't yet have built-in support for its syntax. Similarly, JSX (React) syntax, like all other templating languages (underscore, mako, django, etc) is generally not natively supported. Fortunately, many well-supported plugins are available to help bridge these gaps.
| Editor | ES2015 | How? | JSX | How? |
|---|---|---|---|---|
| Sublime | Plugin | https://github.com/babel/babel-sublime | Plugin | babel-sublime also provides JSX support. |
| PyCharm | Native | .editorconfig files can be used to distinguish between ES5 and ES6 code. Perhaps a PyCharm user can provide further implementation details. | Plugin | https://www.jetbrains.com/help/pycharm/2017.1/using-reactjs-in-javascript-and-typescript.html |
| Atom | Native | Plugin | https://orktes.github.io/atom-react/ | |
| vim | Plugin | https://github.com/pangloss/vim-javascript | Plugin | https://github.com/mxw/vim-jsx |
If you use an editor that isn't listed, please add it here along with any plugins you used to enable ES2015 and/or JSX support.