React App Rewire PostCSS

React App Rewire PostCSS lets you configure PostCSS in Create React App v1 and v2 without ejecting.

Usage

Add React App Rewire PostCSS to your Rewired React app:

1npm install react-app-rewire-postcss --save-dev

Next, add React App Rewire PostCSS to config-overrides.js in your React app directory:

1module.exports = config => {
2  require('react-app-rewire-postcss')(config/*, options */);
3
4  return config;
5};

That’s it! Now you can control PostCSS with all the configuration options from PostCSS Loader:

1module.exports = config => {
2  require('react-app-rewire-postcss')(config, {
3     plugins: loader => [
4      require('postcss-preset-env')()
5    ]
6  });
7
8  return config;
9};

Alternatively, you can now use postcss.config.js in your React app directory:

1module.exports = config => {
2  require('react-app-rewire-postcss')(config, true /* any truthy value will do */);
3
4  return config;
5};

1module.exports = {
2  plugins: {
3    'postcss-preset-env': {
4      stage: 0
5    }
6  }
7};

And you can leverage Browserslist by adding a .browserslistrc to your React app directory:

1# browsers we support
2
3> 2%
4not dead

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Happy PostCSS’ing!