1.0.0

Author: jonathantneal

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = tab
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{json,md,yml}]
+indent_size = 2
+indent_style = space

.gitignore

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+node_modules
+index.*.js
+package-lock.json
+*.log*
+.*
+!.editorconfig
+!.gitignore
+!.rollup.js
+!.travis.yml

.rollup.js

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+import babel from 'rollup-plugin-babel';
+
+export default {
+	input: 'index.js',
+	output: [
+		{ file: 'index.cjs.js', format: 'cjs' },
+		{ file: 'index.es.js', format: 'es' }
+	],
+	plugins: [
+		babel({
+			presets: [
+				['env', { modules: false, targets: { node: 4 } }]
+			]
+		})
+	]
+};

.travis.yml

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+# https://docs.travis-ci.com/user/travis-lint
+
+language: node_js
+
+node_js:
+  - 4
+
+install:
+  - npm install --ignore-scripts

CHANGELOG.md

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+# Changes to React App Rewire PostCSS
+
+### 1.0.0 (June 5, 2018)
+
+- Initial version

CONTRIBUTING.md

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+# Contributing to React App Rewire PostCSS
+
+You want to help? You rock! Now, take a moment to be sure your contributions
+make sense to everyone else.
+
+## Reporting Issues
+
+Found a problem? Want a new feature?
+
+- See if your issue or idea has [already been reported].
+- Provide a [reduced test case] or a [live example].
+
+Remember, a bug is a _demonstrable problem_ caused by _our_ code.
+
+## Submitting Pull Requests
+
+Pull requests are the greatest contributions, so be sure they are focused in
+scope and avoid unrelated commits.
+
+1. To begin; [fork this project], clone your fork, and add our upstream.
+   ```bash
+   # Clone your fork of the repo into the current directory
+   git clone git@github.com:YOUR_USER/react-app-rewire-postcss.git
+
+   # Navigate to the newly cloned directory
+   cd react-app-rewire-postcss
+
+   # Assign the original repo to a remote called "upstream"
+   git remote add upstream git@github.com:jonathantneal/react-app-rewire-postcss.git
+
+   # Install the tools necessary for testing
+   npm install
+   ```
+
+2. Create a branch for your feature or fix:
+   ```bash
+   # Move into a new branch for your feature
+   git checkout -b feature/thing
+   ```
+   ```bash
+   # Move into a new branch for your fix
+   git checkout -b fix/something
+   ```
+
+3. If your code follows our practices, then push your feature branch:
+   ```bash
+   # Test current code
+   npm test
+   ```
+   ```bash
+   # Push the branch for your new feature
+   git push origin feature/thing
+   ```
+   ```bash
+   # Or, push the branch for your update
+   git push origin update/something
+   ```
+
+That’s it! Now [open a pull request] with a clear title and description.
+
+[already been reported]: issues
+[fork this project]:     fork
+[live example]:          https://codepen.io/pen
+[open a pull request]:   https://help.github.com/articles/using-pull-requests/
+[reduced test case]:     https://css-tricks.com/reduced-test-cases/

LICENSE.md

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+# CC0 1.0 Universal
+
+## Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator and
+subsequent owner(s) (each and all, an “owner”) of an original work of
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+
+Certain owners wish to permanently relinquish those rights to a Work for the
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+(“Commons”) that the public can reliably and without fear of later claims of
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+redistribute as freely as possible in any form whatsoever and for any purposes,
+including without limitation commercial purposes. These owners may contribute
+to the Commons to promote the ideal of a free culture and the further
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+greater distribution for their Work in part through the use and efforts of
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+
+For these and/or other purposes and motivations, and without any expectation of
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+1. Copyright and Related Rights. A Work made available under CC0 may be
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+   6. database rights (such as those arising under Directive 96/9/EC of the
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+   7. other similar, equivalent or corresponding rights throughout the world
+      based on applicable law or treaty, and any national implementations
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+2. Waiver. To the greatest extent permitted by, but not in contravention of,
+   applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and
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+   known or unknown (including existing as well as future claims and causes of
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+   such Waiver shall not be subject to revocation, rescission, cancellation,
+   termination, or any other legal or equitable action to disrupt the quiet
+   enjoyment of the Work by the public as contemplated by Affirmer’s express
+   Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason be
+   judged legally invalid or ineffective under applicable law, then the Waiver
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+   Affirmer’s express Statement of Purpose. In addition, to the extent the
+   Waiver is so judged Affirmer hereby grants to each affected person a
+   royalty-free, non transferable, non sublicensable, non exclusive,
+   irrevocable and unconditional license to exercise Affirmer’s Copyright and
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+   maximum duration provided by applicable law or treaty (including future time
+   extensions), (iii) in any current or future medium and for any number of
+   copies, and (iv) for any purpose whatsoever, including without limitation
+   commercial, advertising or promotional purposes (the “License”). The License
+   shall be deemed effective as of the date CC0 was applied by Affirmer to the
+   Work. Should any part of the License for any reason be judged legally
+   invalid or ineffective under applicable law, such partial invalidity or
+   ineffectiveness shall not invalidate the remainder of the License, and in
+   such case Affirmer hereby affirms that he or she will not (i) exercise any
+   of his or her remaining Copyright and Related Rights in the Work or (ii)
+   assert any associated claims and causes of action with respect to the Work,
+   in either case contrary to Affirmer’s express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+   1. No trademark or patent rights held by Affirmer are waived, abandoned,
+      surrendered, licensed or otherwise affected by this document.
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+      extent permissible under applicable law.
+   3. Affirmer disclaims responsibility for clearing rights of other persons
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+      Further, Affirmer disclaims responsibility for obtaining any necessary
+      consents, permissions or other rights required for any use of the Work.
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+      party to this document and has no duty or obligation with respect to this
+      CC0 or use of the Work.
+
+For more information, please see
+http://creativecommons.org/publicdomain/zero/1.0/.

README.md

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+# React App Rewire PostCSS [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS Logo" width="90" height="90" align="right">][postcss]
+
+[![NPM Version][npm-img]][npm-url]
+[![Build Status][cli-img]][cli-url]
+[![Support Chat][git-img]][git-url]
+
+[React App Rewire PostCSS] lets you configure PostCSS plugins in
+[Create React App] without ejecting.
+
+## Usage
+
+Add [React App Rewired] and [React App Rewire PostCSS] to your React app:
+
+```bash
+npm install react-app-rewired react-app-rewire-postcss --save-dev
+```
+
+Add [React App Rewire PostCSS] to the `config-overrides.js` file in your React
+app directory:
+
+```js
+/* config-overrides.js */
+
+const { rewirePostCss } = require('react-app-rewire-postcss');
+
+module.exports = function override(config, env) {
+  //do stuff with the webpack config...
+  return rewirePostCss(config /*, options */);
+}
+```
+
+Now you can control PostCSS with the configuration options in [PostCSS Loader]:
+
+```js
+/* config-overrides.js */
+
+const { rewirePostCss } = require('react-app-rewire-postcss');
+
+module.exports = function override(config, env) {
+  //do stuff with the webpack config...
+  return rewirePostCss(config, {
+     plugins: loader => [
+      require('postcss-preset-env')()
+    ]
+  });
+}
+```
+
+You can also use `postcss.config.js` in your React app directory:
+
+```js
+module.exports = {
+  plugins: {
+    'postcss-preset-env': { stage: 0 }
+  }
+};
+```
+
+And you can also use `.browserslistrc` in your React app directory:
+
+```rc
+> 2%
+not dead
+```
+
+Happy PostCSS’ing!
+
+[cli-img]: https://img.shields.io/travis/jonathantneal/react-app-rewire-postcss.svg
+[cli-url]: https://travis-ci.org/jonathantneal/react-app-rewire-postcss
+[git-img]: https://img.shields.io/badge/support-chat-blue.svg
+[git-url]: https://gitter.im/postcss/postcss
+[npm-img]: https://img.shields.io/npm/v/react-app-rewire-postcss.svg
+[npm-url]: https://www.npmjs.com/package/react-app-rewire-postcss
+
+[Create React App]: https://github.com/facebook/create-react-app
+[Gulp PostCSS]: https://github.com/postcss/gulp-postcss
+[Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
+[PostCSS]: https://github.com/postcss/postcss
+[PostCSS Loader]: https://github.com/postcss/postcss-loader
+[React App Rewire PostCSS]: https://github.com/jonathantneal/react-app-rewire-postcss
+[React App Rewired]: https://github.com/timarney/react-app-rewired

index.js

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+export default (config, options) => {
+	const postcssLoader = findRule(config.module.rules, postcssLoaderMatcher);
+
+	postcssLoader.loader = require.resolve('postcss-loader');
+
+	delete postcssLoader.options.plugins;
+
+	Object.assign(postcssLoader.options, options);
+
+	return config;
+};
+
+const findRule = (rulesSource, ruleMatcher) => {
+	const { index, rules } = findIndexAndRules(rulesSource, ruleMatcher);
+
+	return rules[index];
+};
+
+const findIndexAndRules = (rulesSource, ruleMatcher) => {
+	let result;
+
+	const rules = Array.isArray(rulesSource)
+		? rulesSource
+	: ruleChildren(rulesSource);
+
+	rules.some(
+		(rule, index) => {
+			result = ruleMatcher(rule)
+				? { index, rules }
+			: findIndexAndRules(ruleChildren(rule), ruleMatcher)
+
+			return result;
+		}
+	);
+
+	return result;
+};
+
+const ruleChildren = loader => loader.use || loader.oneOf || Array.isArray(loader.loader) && loader.loader || [];
+
+const postcssLoaderMatcher = rule => rule.loader && rule.loader.indexOf(`/postcss-loader/`) !== -1;