@tbela99/css-parser
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    $ npm install @tbela99/css-parser
    
    $ deno add @tbela99/css-parser
    

    the library can be imported as a module in the browser

    <script type="module">

    import {transform, ColorType} from 'https://esm.sh/@tbela99/css-parser@1.3.4/web';

    const css = `

    .table {
    border-collapse: collapse;
    width: 100%;
    }

    .table td, .table th {
    border: 1px solid #ddd;
    padding: 8px;
    }

    .table tr:nth-child(even){background-color: #f2f2f2;}

    .table tr:hover {background-color: #ddd;}

    .table th {
    padding-top: 12px;
    padding-bottom: 12px;
    text-align: left;
    background-color: #4CAF50;
    color: white;
    }
    `;

    console.debug(await transform(css, {beautify: true, convertColor:.ColorType.OKLCH}).then(r => r.code));
    })();
    </script>

    it can also be imported as umd module


    <script src="https://unpkg.com/@tbela99/css-parser@1.3.4/dist/index-umd-web.js"></script>
    <script>

    (async () => {

    const css = `

    .table {
    border-collapse: collapse;
    width: 100%;
    }

    .table td, .table th {
    border: 1px solid #ddd;
    padding: 8px;
    }

    .table tr:nth-child(even){background-color: #f2f2f2;}

    .table tr:hover {background-color: #ddd;}

    .table th {
    padding-top: 12px;
    padding-bottom: 12px;
    text-align: left;
    background-color: #4CAF50;
    color: white;
    }
    `;

    console.debug(await CSSParser.transform(css, {beautify: true, convertColor: CSSParser.ColorType.OKLCH}).then(r => r.code));
    })();

    </script>