Convert a CSS stylesheet object to a string of text with JavaScript in the browser environment.

When working in the browser environment with HTML and XML, the DOM can be stringified into text using things like innerHTML, outerHTML, and XMLSerializer, but no equivalent functions exist for converting a CSS stylesheet found in CSSOM into a string. That's what this module provides, and it only works in the browser environment.

This software is distributed as an ES module and should work in all modern browsers (including Chrome/Safari/Edge/Firefox).

<style>a { --b: c; }</style>

<script type=module>
  import stringifyStylesheet from 'https://unpkg.com/stringify-css-stylesheet/index.js'

  // Log the stringified CSSStyleRule object to the console
  console.log(
    stringifyStylesheet(document.styleSheets[0])
  )
</script>