Setting up Vim for React.js

Original blog: https://jaxbot.me/articles/setting-up-vim-for-react-js-jsx-02-03-2015

React.js is gaining a lot of traction lately, but developing with its inline-XML-in-JS requires a few tweaks to Vim for a smooth experience.

Syntax highlighting

To get the syntax highlighting to look right, use mxw’s Vim JSX highlighting.

If you use Vundle, add:

Plugin 'mxw/vim-jsx'

Other plugin loaders, see the GitHub page.

If you use JSX syntax in .js files, which is now becoming standard, add:

let g:jsx_ext_required = 0 " Allow JSX in normal JS files

to your vimrc.

Syntax checking

If you use Syntastic, you’ll notice immediate errors wherever XML nodes appear, which is to be expected. Here’s a work around.

Update 3/30/15: I’ve added instructions on using ESLint instead of the old wrapper package.

Install eslint, babel-eslint (for ES6 support), and eslint-plugin-react:

npm install -g eslintnpm install -g babel-eslintnpm install -g eslint-plugin-react

Create a config like this in your project’s .eslintrc, or do so globally by placing it in ~/.eslintrc:

{    "parser": "babel-eslint",    "env": {        "browser": true,        "node": true    },    "settings": {        "ecmascript": 6,        "jsx": true    },    "plugins": [        "react"    ],    "rules": {        "strict": 0,        "quotes": 0,        "no-unused-vars": 0,        "camelcase": 0,        "no-underscore-dangle": 0    }}

Finally, configure Syntastic to use ESLint:

let g:syntastic_javascript_checkers = ['eslint']

You should be good to go, and JSX with ES6 features will syntax check correctly! See this issue for more info.