PostCSS Syntax

postcss-syntax can automatically switch the required PostCSS syntax by file extension/source

Getting Started

First thing's first, install the module:

npm install postcss-syntax --save-dev

If you want support SCSS/SASS/LESS/SugarSS syntax, you need to install these module:

• SCSS: postcss-scss
• SASS: postcss-sass
• LESS: postcss-less
• SugarSS: sugarss

If you want support HTML (and HTML-like)/Markdown/CSS-in-JS file format, you need to install these module:

• CSS-in-JS: postcss-jsx
• HTML (and HTML-like): postcss-html
• Markdown: postcss-markdown

Use Cases

const postcss = require('postcss');
const syntax = require('postcss-syntax')({
    rules: [
        {
            test: /\.(?:[sx]?html?|[sx]ht|vue|ux|php)$/i,
            extract: 'html',
        },
        {
            test: /\.(?:markdown|md)$/i,
            extract: 'markdown',
        },
        {
            test: /\.(?:m?[jt]sx?|es\d*|pac)$/i,
            extract: 'jsx',
        },
        {
            // custom language for file extension
            test: /\.postcss$/i,
            lang: 'scss'
        },
        {
            // custom language for file extension
            test: /\.customcss$/i,
            lang: 'custom'
        },
    ],
 
    // custom parser for CSS (using `postcss-safe-parser`)
    css: 'postcss-safe-parser',
    // custom parser for SASS (PostCSS-compatible syntax.)
    sass: require('postcss-sass'),
    // custom parser for SCSS (by module name)
    scss: 'postcss-scss',
    // custom parser for LESS (by module path)
    less: './node_modules/postcss-less',
    // custom parser for SugarSS
    sugarss: require('sugarss'),
    // custom parser for custom language
    custom: require('postcss-custom-syntax'),
 
});
postcss(plugins).process(source, { syntax: syntax }).then(function (result) {
    // An alias for the result.css property. Use it with syntaxes that generate non-CSS output.
    result.content
});