Extract CSS from websites and browser extensions

npm i fetch-css

import fetchCss from "fetch-css";

// retrieve CSS of a website
const [{css}] = await fetchCss([{url: "https://example.com"}]);

// extract CSS from a Chrome extension
const [{css}] = await fetchCss([{crx: "hlepfoohegkhhmjieoechaddaejaokhf"}]);

• sources: Array Array of source objects
  • source: Object
    • url: string or Array An absolute URL pointing to either a website or directly to a CSS or JS file (to extract inlined CSS strings from)
    • fetchOpts: Object Options passed to fetch
    • crx: string A Chrome extension id
    • contentScriptsOnly: boolean Whether to pull only content scripts from a extension. Default: false
    • strict: boolean Whether to throw an error if fetch fails. Default: false

Returns a Promise that resolves to a sources array with additional css properties present on each source.

• remap-css - Remap CSS rules based on declaration value

© silverwind, distributed under BSD licence