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PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier

Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.

This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.

Installation

npm i -D postcss-webpack-plugin

Usage

// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};

Chaining multiple instances together

Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.

// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}

Plugin options

interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}

filename

string | ((filename: string) => string)

Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.

filter

RegExp | ((filename: string) => boolean)

Custom function or RegExp to filter assets to process (defaults to /\.css$/).

implementation

Postcss

Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.

additionalAssets

true | undefined

Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.

stage

number

Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).

plugins

any[]

Array of postcss plugins.

Supported versions

  • node 14+
  • postcss 8+
  • webpack 5+

About

A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.

Topics

cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin

Resources

Readme
MIT license
Activity

Stars

2 stars

Watchers

1 watching

Forks

0 forks
Report repository

Releases

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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BranchesTags
Repository files navigation
PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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PostCSS Webpack Plugin

A webpack plugin to process generated assets with PostCSS with support for webpack 5.x filesystem cache.

ciPrettier
Serves as an alternative and also addition to postcss-loader. While webpack loaders are pretty efficient, they allow you to process just one file at time.
This plugin tries to solve this issue while taking great inspiration from postcss-pipeline-webpack-plugin. It allows you to run PostCSS plugins on generated (and newly emitted) assets, with support for webpack 5.x filesystem cache and ability to change content of existing assets, rather than a need to always generate new ones.
Installation
npm i -D postcss-webpack-plugin
Usage
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={entry: 'base.css',plugins: [newMiniCssExtractPlugin({filename: '[name].css',chunkFilename: '[id].[name].css',}),
...(config?.plugins??[]),],module: {rules: [{test: /.css$/i,use: [MiniCssExtractPlugin.loader,'css-loader'],},],},plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),],};
Chaining multiple instances together
Following example first runs css nano and pxtorem plugin son the base.css asset and then creates a new one with only mobile styles (using unmq plugin) in the second pass.
// webpack.config.jsconst{ PostCSSWebpackPlugin }=require('postcss-webpack-plugin');module.exports={// ...plugins: [newPostCSSWebpackPlugin({plugins: [require('postcss-pxtorem'),require('cssnano')],}),newPostCSSWebpackPlugin({plugins: [require('postcss-unmq')({type: 'screen',width: 540,}),],filename: '[name].mobile[ext]',})]}
Plugin options
interfacePostCSSWebpackPluginOptions{filename?: string|((filename: string)=>string);filter?: RegExp|((filename: string)=>boolean);implementation?: Postcss;additionalAssets?: true|undefined;stage?: number;plugins: any[];}
filename
string | ((filename: string) => string)
Optional custom filename. If not provided the plugins are applied on the existing css assets without creating new ones. Can be either function or string with support for [base], [dir], [ext], [name], [root] template variables.
filter
RegExp | ((filename: string) => boolean)
Custom function or RegExp to filter assets to process (defaults to /\.css$/).
implementation
Postcss
Optional custom implementation for postcss. Can be usefull in some projects where the default require('postcss') resolves to wrong version.
additionalAssets
true | undefined
Set to true to run plugin for newly emitted assets. Should be used in combination with filter option in order to prevent cycles in compilation.
stage
number
Custom plugin processAssets hook stage (defaults to PROCESS_ASSETS_STAGE_OPTIMIZE).
plugins
any[]
Array of postcss plugins.
Supported versions
  • node 14+
  • postcss 8+
  • webpack 5+
About
A webpack plugin to process generated assets with PostCSS with support for webpack 5 filesystem cache.
Topics
cachefilesystemloaderpipelinepluginpostcsspostcss-loaderwebpackwebpack-plugin
Resources
Readme
MIT license
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Used by
Contributors
Languages