mirror of
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486 lines
10 KiB
Markdown
486 lines
10 KiB
Markdown
[![npm][npm]][npm-url]
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[![node][node]][node-url]
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[![deps][deps]][deps-url]
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[![test][test]][test-url]
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[![coverage][cover]][cover-url]
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[![code style][style]][style-url]
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[![chat][chat]][chat-url]
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<div align="center">
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<img width="100" height="100" title="Load Options" src="http://michael-ciniawsky.github.io/postcss-load-options/logo.svg">
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<a href="https://github.com/postcss/postcss">
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<img width="110" height="110" title="PostCSS" src="http://postcss.github.io/postcss/logo.svg" hspace="10">
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</a>
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<img width="100" height="100" title="Load Plugins" src="http://michael-ciniawsky.github.io/postcss-load-plugins/logo.svg">
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<h1>Load Config</h1>
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</div>
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<h2 align="center">Install</h2>
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```bash
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npm i -D postcss-load-config
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```
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<h2 align="center">Usage</h2>
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```bash
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npm i -S|-D postcss-plugin
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```
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Install all required postcss plugins and save them to your **package.json** `dependencies`/`devDependencies`
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Then create a postcss config file by choosing one of the following formats
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### `package.json`
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Create a **`postcss`** section in your project's **`package.json`**
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```
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Project (Root)
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|– client
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|– public
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|- package.json
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```
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```json
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{
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"postcss": {
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"parser": "sugarss",
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"map": false,
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"plugins": {
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"postcss-plugin": {}
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}
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}
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}
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```
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### `.postcssrc`
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Create a **`.postcssrc`** file in JSON or YAML format
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> ℹ️ It's recommended to use an extension (e.g **`.postcssrc.json`** or **`.postcssrc.yml`**) instead of `.postcssrc`
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```
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Project (Root)
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|– client
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|– public
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|- (.postcssrc|.postcssrc.json|.postcssrc.yml)
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|- package.json
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```
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**`.postcssrc.json`**
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```json
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{
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"parser": "sugarss",
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"map": false,
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"plugins": {
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"postcss-plugin": {}
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}
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}
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```
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**`.postcssrc.yml`**
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```yaml
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parser: sugarss
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map: false
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plugins:
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postcss-plugin: {}
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```
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### `.postcssrc.js` or `postcss.config.js`
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You may need some logic within your config. In this case create JS file named **`.postcssrc.js`** or **`postcss.config.js`**
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```
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Project (Root)
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|– client
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|– public
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|- (.postcssrc.js|postcss.config.js)
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|- package.json
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```
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You can export the config as an `{Object}`
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**.postcssrc.js**
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```js
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module.exports = {
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parser: 'sugarss',
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map: false,
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plugins: {
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'postcss-plugin': {}
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}
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}
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```
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Or export a `{Function}` that returns the config (more about the `ctx` param below)
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**.postcssrc.js**
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```js
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module.exports = (ctx) => ({
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parser: ctx.parser ? 'sugarss' : false,
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map: ctx.env === 'development' ? ctx.map : false,
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plugins: {
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'postcss-plugin': ctx.options.plugin
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}
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})
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```
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Plugins can be loaded either using an `{Object}` or an `{Array}`
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#### `{Object}`
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**.postcssrc.js**
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```js
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module.exports = ({ env }) => ({
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...options
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plugins: {
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'postcss-plugin': env === 'production' ? {} : false
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}
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})
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```
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#### `{Array}`
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**.postcssrc.js**
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```js
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module.exports = ({ env }) => ({
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...options
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plugins: [
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env === 'production' ? require('postcss-plugin')() : false
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]
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})
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```
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> :warning: When using an `{Array}`, make sure to `require()` each plugin
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<h2 align="center">Options</h2>
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|Name|Type|Default|Description|
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|:--:|:--:|:-----:|:----------|
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|[**`to`**](#to)|`{String}`|`undefined`|Destination File Path|
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|[**`map`**](#map)|`{String\|Object}`|`false`|Enable/Disable Source Maps|
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|[**`from`**](#from)|`{String}`|`undefined`|Source File Path|
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|[**`parser`**](#parser)|`{String\|Function}`|`false`|Custom PostCSS Parser|
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|[**`syntax`**](#syntax)|`{String\|Function}`|`false`|Custom PostCSS Syntax|
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|[**`stringifier`**](#stringifier)|`{String\|Function}`|`false`|Custom PostCSS Stringifier|
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### `parser`
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**.postcssrc.js**
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```js
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module.exports = {
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parser: 'sugarss'
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}
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```
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### `syntax`
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**.postcssrc.js**
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```js
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module.exports = {
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syntax: 'postcss-scss'
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}
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```
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### `stringifier`
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**.postcssrc.js**
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```js
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module.exports = {
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stringifier: 'midas'
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}
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```
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### [**`map`**](https://github.com/postcss/postcss/blob/master/docs/source-maps.md)
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**.postcssrc.js**
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```js
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module.exports = {
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map: 'inline'
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}
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```
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> :warning: In most cases `options.from` && `options.to` are set by the third-party which integrates this package (CLI, gulp, webpack). It's unlikely one needs to set/use `options.from` && `options.to` within a config file. Unless you're a third-party plugin author using this module and its Node API directly **dont't set `options.from` && `options.to` yourself**
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### `to`
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```js
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module.exports = {
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to: 'path/to/dest.css'
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}
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```
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### `from`
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```js
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module.exports = {
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from: 'path/to/src.css'
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}
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```
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<h2 align="center">Plugins</h2>
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### `{} || null`
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The plugin will be loaded with defaults
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```js
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'postcss-plugin': {} || null
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```
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**.postcssrc.js**
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```js
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module.exports = {
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plugins: {
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'postcss-plugin': {} || null
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}
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}
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```
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> :warning: `{}` must be an **empty** `{Object}` literal
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### `{Object}`
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The plugin will be loaded with given options
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```js
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'postcss-plugin': { option: '', option: '' }
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```
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**.postcssrc.js**
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```js
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module.exports = {
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plugins: {
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'postcss-plugin': { option: '', option: '' }
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}
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}
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```
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### `false`
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The plugin will not be loaded
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```js
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'postcss-plugin': false
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```
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**.postcssrc.js**
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```js
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module.exports = {
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plugins: {
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'postcss-plugin': false
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}
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}
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```
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### `Ordering`
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Plugin **execution order** is determined by declaration in the plugins section (**top-down**)
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```js
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{
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plugins: {
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'postcss-plugin': {}, // [0]
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'postcss-plugin': {}, // [1]
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'postcss-plugin': {} // [2]
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}
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}
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```
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<h2 align="center">Context</h2>
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When using a `{Function}` (`postcss.config.js` or `.postcssrc.js`), it's possible to pass context to `postcss-load-config`, which will be evaluated while loading your config. By default `ctx.env (process.env.NODE_ENV)` and `ctx.cwd (process.cwd())` are available on the `ctx` `{Object}`
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> ℹ️ Most third-party integrations add additional properties to the `ctx` (e.g `postcss-loader`). Check the specific module's README for more information about what is available on the respective `ctx`
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<h2 align="center">Examples</h2>
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**postcss.config.js**
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```js
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module.exports = (ctx) => ({
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parser: ctx.parser ? 'sugarss' : false,
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map: ctx.env === 'development' ? ctx.map : false,
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plugins: {
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'postcss-import': {},
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'postcss-nested': {},
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cssnano: ctx.env === 'production' ? {} : false
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}
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})
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```
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<div align="center">
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<img width="80" height="80" src="https://worldvectorlogo.com/logos/nodejs-icon.svg">
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</div>
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```json
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"scripts": {
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"build": "NODE_ENV=production node postcss",
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"start": "NODE_ENV=development node postcss"
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}
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```
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### `Async`
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```js
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const { readFileSync } = require('fs')
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const postcss = require('postcss')
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const postcssrc = require('postcss-load-config')
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const css = readFileSync('index.sss', 'utf8')
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const ctx = { parser: true, map: 'inline' }
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postcssrc(ctx).then(({ plugins, options }) => {
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postcss(plugins)
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.process(css, options)
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.then((result) => console.log(result.css))
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})
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```
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### `Sync`
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```js
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const { readFileSync } = require('fs')
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const postcss = require('postcss')
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const postcssrc = require('postcss-load-config')
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const css = readFileSync('index.sss', 'utf8')
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const ctx = { parser: true, map: 'inline' }
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const { plugins, options } = postcssrc.sync(ctx)
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```
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<div align="center">
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<img width="80" height="80" halign="10" src="https://worldvectorlogo.com/logos/gulp.svg">
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</div>
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```json
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"scripts": {
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"build": "NODE_ENV=production gulp",
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"start": "NODE_ENV=development gulp"
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}
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```
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```js
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const { task, src, dest, series, watch } = require('gulp')
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const postcss = require('gulp-postcssrc')
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const css = () => {
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src('src/*.css')
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.pipe(postcss())
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.pipe(dest('dest'))
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})
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task('watch', () => {
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watch(['src/*.css', 'postcss.config.js'], css)
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})
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task('default', series(css, 'watch'))
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```
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<div align="center">
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<img width="80" height="80" src="https://cdn.rawgit.com/webpack/media/e7485eb2/logo/icon.svg">
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</div>
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```json
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"scripts": {
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"build": "NODE_ENV=production webpack",
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"start": "NODE_ENV=development webpack-dev-server"
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}
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```
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**webpack.config.js**
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```js
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module.exports = (env) => ({
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module: {
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rules: [
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{
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test: /\.css$/,
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use: [
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'style-loader',
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'css-loader',
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'postcss-loader'
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]
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}
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]
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}
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})
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```
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<h2 align="center">Maintainers</h2>
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<table>
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<tbody>
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<tr>
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<td align="center">
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<img width="150" height="150"
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src="https://github.com/michael-ciniawsky.png?v=3&s=150">
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<br />
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<a href="https://github.com/michael-ciniawsky">Michael Ciniawsky</a>
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</td>
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<td align="center">
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<img width="150" height="150"
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src="https://github.com/ertrzyiks.png?v=3&s=150">
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<br />
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<a href="https://github.com/ertrzyiks">Mateusz Derks</a>
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</td>
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</tr>
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<tbody>
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</table>
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<h2 align="center">Contributors</h2>
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<table>
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<tbody>
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<tr>
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<td align="center">
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<img width="150" height="150"
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src="https://github.com/sparty02.png?v=3&s=150">
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<br />
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<a href="https://github.com/sparty02">Ryan Dunckel</a>
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</td>
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<td align="center">
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<img width="150" height="150"
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src="https://github.com/pcgilday.png?v=3&s=150">
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<br />
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<a href="https://github.com/pcgilday">Patrick Gilday</a>
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</td>
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<td align="center">
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<img width="150" height="150"
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src="https://github.com/daltones.png?v=3&s=150">
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<br />
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<a href="https://github.com/daltones">Dalton Santos</a>
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</td>
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</tr>
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<tbody>
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</table>
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[npm]: https://img.shields.io/npm/v/postcss-load-config.svg
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[npm-url]: https://npmjs.com/package/postcss-load-config
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[node]: https://img.shields.io/node/v/postcss-load-plugins.svg
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[node-url]: https://nodejs.org/
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[deps]: https://david-dm.org/michael-ciniawsky/postcss-load-config.svg
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[deps-url]: https://david-dm.org/michael-ciniawsky/postcss-load-config
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[test]: http://img.shields.io/travis/michael-ciniawsky/postcss-load-config.svg
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[test-url]: https://travis-ci.org/michael-ciniawsky/postcss-load-config
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[cover]: https://coveralls.io/repos/github/michael-ciniawsky/postcss-load-config/badge.svg
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[cover-url]: https://coveralls.io/github/michael-ciniawsky/postcss-load-config
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[style]: https://img.shields.io/badge/code%20style-standard-yellow.svg
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[style-url]: http://standardjs.com/
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[chat]: https://img.shields.io/gitter/room/postcss/postcss.svg
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[chat-url]: https://gitter.im/postcss/postcss
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