0c4c2b6 has added https://github.com/remarkablemark/html-dom-parser/blob/master/lib/client/html-to-dom.mjs with

module.exports = HTMLDOMParser;
module.exports.default = HTMLDOMParser;

which are not valid ECMAScript exports statements (valid syntax). export and export default are, like in index.mjs.

The end result is this is that my project crashes on browser with ReferenceError: module is not defined.

Could you either revert that change or make it ECMAScript compliant?