Package Exports

css-selector-extract

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Readme

css-selector-extract

With selector extracting, it is possible to extract certain CSS selectors form (S)CSS code. This is especially useful if you want to extract only a few CSS classes from a huge library or framework.

Demos

var cssSelectorExtract = require('css-selector-extract');

// CSS source code as string.
var css = '.btn { ... } .btn-alert { ... } .btn-success { ... }';
// Array of selector filter objects with selectors which should be extracted.
var selectorFilters = ['.btn'];

// Asynchronous:
cssSelectorExtract.process(css, selectorFilters).then((extractedCss) => {
  console.log(extractedCss); // Outputs: `.btn { ... }`.
});

// Synchronous:
var extractedCss = cssSelectorExtract.processSync(css, selectorFilters);
console.log(extractedCss); // Outputs: `.btn { ... }`.

Rename extracted selectors

var cssSelectorExtract = require('css-selector-extract');

// CSS source code as string.
var css = '.btn { ... } .btn-alert { ... } .btn-success { ... }';
// Array of selector filter objects with selectors
// which should be extracted and replaced.
var selectorFilters = [{ selector: '.btn', replacement: '.button' }];

// Asynchronous:
cssSelectorExtract.process(css, selectorFilters).then((extractedCss) => {
  console.log(extractedCss); // Outputs: `.button { ... }`.
});

Usage with syntaxes other than pure CSS

Install the corresponding postcss syntax plugin (e.g. postcss-scss or postcss-less).

var cssSelectorExtract = require('css-selector-extract');
var postcssScss = require('postcss-scss');

var css = '.nested { .selector { ... } }';
var selectorFilters = ['.nested', '.selector'];

// Add the postcss syntax plugin as third parameter.
cssSelectorExtract.process(css, selectorFilters, postcssScss).then((extractedCss) => {
  console.log(extractedCss);
});

Development

See CONTRIBUTING.md

Testing

npm test

JSPM