Dylan Iqbal

Dylan Iqbal

1670381543

PostCSS: A Tool for Transforming CSS with JavaScript

PostCSS 

PostCSS is a tool for transforming styles with JS plugins. These plugins can lint your CSS, support variables and mixins, transpile future CSS syntax, inline images, and more.

PostCSS is used by industry leaders including Wikipedia, Twitter, Alibaba, and JetBrains. The Autoprefixer PostCSS plugin is one of the most popular CSS processors.

PostCSS takes a CSS file and provides an API to analyze and modify its rules (by transforming them into an Abstract Syntax Tree). This API can then be used by plugins to do a lot of useful things, e.g., to find errors automatically, or to insert vendor prefixes.

For PostCSS commercial support (consulting, improving the front-end culture of your company, PostCSS plugins), contact Evil Martians at postcss@evilmartians.com.

Sponsored by Evil Martians Plugins

Currently, PostCSS has more than 200 plugins. You can find all of the plugins in the plugins list or in the searchable catalog. Below is a list of our favorite plugins — the best demonstrations of what can be built on top of PostCSS.

If you have any new ideas, PostCSS plugin development is really easy.

Solve Global CSS Problem

  • postcss-use allows you to explicitly set PostCSS plugins within CSS and execute them only for the current file.
  • postcss-modules and react-css-modules automatically isolate selectors within components.
  • postcss-autoreset is an alternative to using a global reset that is better for isolatable components.
  • postcss-initial adds all: initial support, which resets all inherited styles.
  • cq-prolyfill adds container query support, allowing styles that respond to the width of the parent.

Use Future CSS, Today

Better CSS Readability

Images and Fonts

Linters

  • stylelint is a modular stylesheet linter.
  • stylefmt is a tool that automatically formats CSS according stylelint rules.
  • doiuse lints CSS for browser support, using data from Can I Use.
  • colorguard helps you maintain a consistent color palette.

Other

  • cssnano is a modular CSS minifier.
  • lost is a feature-rich calc() grid system.
  • rtlcss mirrors styles for right-to-left locales.

Syntaxes

PostCSS can transform styles in any syntax, not just CSS. If there is not yet support for your favorite syntax, you can write a parser and/or stringifier to extend PostCSS.

  • sugarss is a indent-based syntax like Sass or Stylus.
  • postcss-syntax switch syntax automatically by file extensions.
  • postcss-html parsing styles in <style> tags of HTML-like files.
  • postcss-markdown parsing styles in code blocks of Markdown files.
  • postcss-jsx parsing CSS in template / object literals of source files.
  • postcss-styled parsing CSS in template literals of source files.
  • postcss-scss allows you to work with SCSS (but does not compile SCSS to CSS).
  • postcss-sass allows you to work with Sass (but does not compile Sass to CSS).
  • postcss-less allows you to work with Less (but does not compile LESS to CSS).
  • postcss-less-engine allows you to work with Less (and DOES compile LESS to CSS using true Less.js evaluation).
  • postcss-js allows you to write styles in JS or transform React Inline Styles, Radium or JSS.
  • postcss-safe-parser finds and fixes CSS syntax errors.
  • midas converts a CSS string to highlighted HTML.

Articles

More articles and videos you can find on awesome-postcss list.

Books

Usage

You can start using PostCSS in just two steps:

  1. Find and add PostCSS extensions for your build tool.
  2. Select plugins and add them to your PostCSS process.

CSS-in-JS

The best way to use PostCSS with CSS-in-JS is astroturf. Add its loader to your webpack.config.js:

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'postcss-loader'],
      },
      {
        test: /\.jsx?$/,
        use: ['babel-loader', 'astroturf/loader'],
      }
    ]
  }
}

Then create postcss.config.js:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-nested')
  ]
}

Parcel

Parcel has built-in PostCSS support. It already uses Autoprefixer and cssnano. If you want to change plugins, create postcss.config.js in project’s root:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-nested')
  ]
}

Parcel will even automatically install these plugins for you.

Please, be aware of the several issues in Version 1. Notice, Version 2 may resolve the issues via issue #2157.

Webpack

Use postcss-loader in webpack.config.js:

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
            }
          },
          {
            loader: 'postcss-loader'
          }
        ]
      }
    ]
  }
}

Then create postcss.config.js:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-nested')
  ]
}

Gulp

Use gulp-postcss and gulp-sourcemaps.

gulp.task('css', () => {
  const postcss    = require('gulp-postcss')
  const sourcemaps = require('gulp-sourcemaps')

  return gulp.src('src/**/*.css')
    .pipe( sourcemaps.init() )
    .pipe( postcss([ require('autoprefixer'), require('postcss-nested') ]) )
    .pipe( sourcemaps.write('.') )
    .pipe( gulp.dest('build/') )
})

npm Scripts

To use PostCSS from your command-line interface or with npm scripts there is postcss-cli.

postcss --use autoprefixer -o main.css css/*.css

Browser

If you want to compile CSS string in browser (for instance, in live edit tools like CodePen), just use Browserify or webpack. They will pack PostCSS and plugins files into a single file.

To apply PostCSS plugins to React Inline Styles, JSS, Radium and other CSS-in-JS, you can use postcss-js and transforms style objects.

const postcss  = require('postcss-js')
const prefixer = postcss.sync([ require('autoprefixer') ])

prefixer({ display: 'flex' }) //=> { display: ['-webkit-box', '-webkit-flex', '-ms-flexbox', 'flex'] }

Runners

JS API

For other environments, you can use the JS API:

const autoprefixer = require('autoprefixer')
const postcss = require('postcss')
const postcssNested = require('postcss-nested')
const fs = require('fs')

fs.readFile('src/app.css', (err, css) => {
  postcss([autoprefixer, postcssNested])
    .process(css, { from: 'src/app.css', to: 'dest/app.css' })
    .then(result => {
      fs.writeFile('dest/app.css', result.css, () => true)
      if ( result.map ) {
        fs.writeFile('dest/app.css.map', result.map.toString(), () => true)
      }
    })
})

Read the PostCSS API documentation for more details about the JS API.

All PostCSS runners should pass PostCSS Runner Guidelines.

Options

Most PostCSS runners accept two parameters:

  • An array of plugins.
  • An object of options.

Common options:

  • syntax: an object providing a syntax parser and a stringifier.
  • parser: a special syntax parser (for example, SCSS).
  • stringifier: a special syntax output generator (for example, Midas).
  • map: source map options.
  • from: the input file name (most runners set it automatically).
  • to: the output file name (most runners set it automatically).

Treat Warnings as Errors

In some situations it might be helpful to fail the build on any warning from PostCSS or one of its plugins. This guarantees that no warnings go unnoticed, and helps to avoid bugs. While there is no option to enable treating warnings as errors, it can easily be done by adding postcss-fail-on-warn plugin in the end of PostCSS plugins:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-fail-on-warn')
  ]
}

Editors & IDE Integration

VS Code

Atom

Sublime Text

Vim

WebStorm

To get support for PostCSS in WebStorm and other JetBrains IDEs you need to install this plugin.

Security Contact

To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.

For Enterprise

Available as part of the Tidelift Subscription.

The maintainers of postcss and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more. 

Support / Discussion: Gitter
Twitter account: @postcss
VK.com page: postcss
中文翻译: docs/README-cn.md

Download Details: 
Author: postcss
Source Code: https://github.com/postcss/postcss 
License: MIT

#css #postcss #javascript 

What is GEEK

Buddha Community

PostCSS: A Tool for Transforming CSS with JavaScript
Dylan Iqbal

Dylan Iqbal

1670381543

PostCSS: A Tool for Transforming CSS with JavaScript

PostCSS 

PostCSS is a tool for transforming styles with JS plugins. These plugins can lint your CSS, support variables and mixins, transpile future CSS syntax, inline images, and more.

PostCSS is used by industry leaders including Wikipedia, Twitter, Alibaba, and JetBrains. The Autoprefixer PostCSS plugin is one of the most popular CSS processors.

PostCSS takes a CSS file and provides an API to analyze and modify its rules (by transforming them into an Abstract Syntax Tree). This API can then be used by plugins to do a lot of useful things, e.g., to find errors automatically, or to insert vendor prefixes.

For PostCSS commercial support (consulting, improving the front-end culture of your company, PostCSS plugins), contact Evil Martians at postcss@evilmartians.com.

Sponsored by Evil Martians Plugins

Currently, PostCSS has more than 200 plugins. You can find all of the plugins in the plugins list or in the searchable catalog. Below is a list of our favorite plugins — the best demonstrations of what can be built on top of PostCSS.

If you have any new ideas, PostCSS plugin development is really easy.

Solve Global CSS Problem

  • postcss-use allows you to explicitly set PostCSS plugins within CSS and execute them only for the current file.
  • postcss-modules and react-css-modules automatically isolate selectors within components.
  • postcss-autoreset is an alternative to using a global reset that is better for isolatable components.
  • postcss-initial adds all: initial support, which resets all inherited styles.
  • cq-prolyfill adds container query support, allowing styles that respond to the width of the parent.

Use Future CSS, Today

Better CSS Readability

Images and Fonts

Linters

  • stylelint is a modular stylesheet linter.
  • stylefmt is a tool that automatically formats CSS according stylelint rules.
  • doiuse lints CSS for browser support, using data from Can I Use.
  • colorguard helps you maintain a consistent color palette.

Other

  • cssnano is a modular CSS minifier.
  • lost is a feature-rich calc() grid system.
  • rtlcss mirrors styles for right-to-left locales.

Syntaxes

PostCSS can transform styles in any syntax, not just CSS. If there is not yet support for your favorite syntax, you can write a parser and/or stringifier to extend PostCSS.

  • sugarss is a indent-based syntax like Sass or Stylus.
  • postcss-syntax switch syntax automatically by file extensions.
  • postcss-html parsing styles in <style> tags of HTML-like files.
  • postcss-markdown parsing styles in code blocks of Markdown files.
  • postcss-jsx parsing CSS in template / object literals of source files.
  • postcss-styled parsing CSS in template literals of source files.
  • postcss-scss allows you to work with SCSS (but does not compile SCSS to CSS).
  • postcss-sass allows you to work with Sass (but does not compile Sass to CSS).
  • postcss-less allows you to work with Less (but does not compile LESS to CSS).
  • postcss-less-engine allows you to work with Less (and DOES compile LESS to CSS using true Less.js evaluation).
  • postcss-js allows you to write styles in JS or transform React Inline Styles, Radium or JSS.
  • postcss-safe-parser finds and fixes CSS syntax errors.
  • midas converts a CSS string to highlighted HTML.

Articles

More articles and videos you can find on awesome-postcss list.

Books

Usage

You can start using PostCSS in just two steps:

  1. Find and add PostCSS extensions for your build tool.
  2. Select plugins and add them to your PostCSS process.

CSS-in-JS

The best way to use PostCSS with CSS-in-JS is astroturf. Add its loader to your webpack.config.js:

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'postcss-loader'],
      },
      {
        test: /\.jsx?$/,
        use: ['babel-loader', 'astroturf/loader'],
      }
    ]
  }
}

Then create postcss.config.js:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-nested')
  ]
}

Parcel

Parcel has built-in PostCSS support. It already uses Autoprefixer and cssnano. If you want to change plugins, create postcss.config.js in project’s root:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-nested')
  ]
}

Parcel will even automatically install these plugins for you.

Please, be aware of the several issues in Version 1. Notice, Version 2 may resolve the issues via issue #2157.

Webpack

Use postcss-loader in webpack.config.js:

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
            }
          },
          {
            loader: 'postcss-loader'
          }
        ]
      }
    ]
  }
}

Then create postcss.config.js:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-nested')
  ]
}

Gulp

Use gulp-postcss and gulp-sourcemaps.

gulp.task('css', () => {
  const postcss    = require('gulp-postcss')
  const sourcemaps = require('gulp-sourcemaps')

  return gulp.src('src/**/*.css')
    .pipe( sourcemaps.init() )
    .pipe( postcss([ require('autoprefixer'), require('postcss-nested') ]) )
    .pipe( sourcemaps.write('.') )
    .pipe( gulp.dest('build/') )
})

npm Scripts

To use PostCSS from your command-line interface or with npm scripts there is postcss-cli.

postcss --use autoprefixer -o main.css css/*.css

Browser

If you want to compile CSS string in browser (for instance, in live edit tools like CodePen), just use Browserify or webpack. They will pack PostCSS and plugins files into a single file.

To apply PostCSS plugins to React Inline Styles, JSS, Radium and other CSS-in-JS, you can use postcss-js and transforms style objects.

const postcss  = require('postcss-js')
const prefixer = postcss.sync([ require('autoprefixer') ])

prefixer({ display: 'flex' }) //=> { display: ['-webkit-box', '-webkit-flex', '-ms-flexbox', 'flex'] }

Runners

JS API

For other environments, you can use the JS API:

const autoprefixer = require('autoprefixer')
const postcss = require('postcss')
const postcssNested = require('postcss-nested')
const fs = require('fs')

fs.readFile('src/app.css', (err, css) => {
  postcss([autoprefixer, postcssNested])
    .process(css, { from: 'src/app.css', to: 'dest/app.css' })
    .then(result => {
      fs.writeFile('dest/app.css', result.css, () => true)
      if ( result.map ) {
        fs.writeFile('dest/app.css.map', result.map.toString(), () => true)
      }
    })
})

Read the PostCSS API documentation for more details about the JS API.

All PostCSS runners should pass PostCSS Runner Guidelines.

Options

Most PostCSS runners accept two parameters:

  • An array of plugins.
  • An object of options.

Common options:

  • syntax: an object providing a syntax parser and a stringifier.
  • parser: a special syntax parser (for example, SCSS).
  • stringifier: a special syntax output generator (for example, Midas).
  • map: source map options.
  • from: the input file name (most runners set it automatically).
  • to: the output file name (most runners set it automatically).

Treat Warnings as Errors

In some situations it might be helpful to fail the build on any warning from PostCSS or one of its plugins. This guarantees that no warnings go unnoticed, and helps to avoid bugs. While there is no option to enable treating warnings as errors, it can easily be done by adding postcss-fail-on-warn plugin in the end of PostCSS plugins:

module.exports = {
  plugins: [
    require('autoprefixer'),
    require('postcss-fail-on-warn')
  ]
}

Editors & IDE Integration

VS Code

Atom

Sublime Text

Vim

WebStorm

To get support for PostCSS in WebStorm and other JetBrains IDEs you need to install this plugin.

Security Contact

To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.

For Enterprise

Available as part of the Tidelift Subscription.

The maintainers of postcss and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more. 

Support / Discussion: Gitter
Twitter account: @postcss
VK.com page: postcss
中文翻译: docs/README-cn.md

Download Details: 
Author: postcss
Source Code: https://github.com/postcss/postcss 
License: MIT

#css #postcss #javascript 

Lyda White

Lyda White

1628189100

How to Image Uploader with Preview || Html CSS JavaScript

Image Uploader with Preview || Html CSS JavaScript || #html #css #javascript #coding

#html #css #javascript 

Saurabh Kumar

Saurabh Kumar

1671267560

Personal Portfolio Website Using Html Css and Javascript

#HTML #CSS #JavaScript 

In this tutorial we are going to make a personal Portfolio in this website there are six section Home, About, Services,Portfolio , Skills, and Contact the main features of this is dark/light mode function

 ∎ Download Source codes - https://www.thesimplifieddev.com/make-a-personal-portfolio-website

Features : -

  • Fully Responsive 
  • Dark mode/light mode
  • Browser compatibility
  • Social Media Icon
  • and many more

#css  #html  #javascript 

 

 

Code JS

Code JS

1642043752

Create a Dark/Light Theme Transition Effect with CSS and JavaScript

In this tutorial, we are creating a Dark/Light Theme Toggle effect using vanilla #CSS and #JavaScript. This is a perfect component to be used on a website that has a Dark theme mode.

Source Code: https://codepen.io/FlorinPop17/pen/XWWZYYG 

Subscribe: https://www.youtube.com/c/FlorinPop/featured 

#html #css #javascript 

code savvy

code savvy

1630506330

Product landing page using HTML CSS & JavaScript | web design

Knowledge

This video is about the product landing page using HTML CSS And JavaScript, in which we created a simple product landing page using HTML CSS and in order to perform  those powerful animations we use the GSAP a JavaScript animation library for work done.

In this video we broadly cover the concepts of CSS Flex box and CSS Grid system and Some CSS Properties such as nth child selector, ::before & ::after much more.

Don't forget to join the channel for more videos like this. Code Savvy

📁 Assets 
Icons : https://fontawesome.com/
Fonts : https://fonts.google.com/
GitHub : https://github.com/ananikets18
GSAP : https://greensock.com/gsap/

Outline ⏱

0:00 - Intro
0:10 - Result
0:38 - Project Setup
01:35 – Reset HTML
02:21 – Left Container HTML
03:41 – Wrapper
14:58 – Bottom Shoe Nav
26:23 – Right Container HTML
33:10 – Product Size
35:49 – Reviews
41:11 – GSAP Animations

Click to Watch Full tutorial on YOUTUBE

#html  #css  #javascript  #web-development #html5 

#html #css #tailwindcss #javascript