@revivek, curious what's the timeline for the next release? Wondering because it's been a few months since this PR was merged and there hasn't been a release yet.
This repository only uses one method in react-dom, which is
renderToStaticMarkup, along with rendering a few basic components.
renderToStaticMarkup doesn't behave differently on React 18 vs 17, so I believe it's safe to include the new React version into this project's peer dependencies.