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nightwatch
Integrated end-to-end testing framework written in Node.js and using W3C Webdriver API. Developed at @browserstack
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storybook
Storybook is a frontend workshop for building UI components and pages in isolation. Made for UI development, testing, and documentation.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
I recommend checking out https://storybook.js.org/. Not entirely sure if it'll addresses your specific problem since I don't know all your context but it's worth a looking into imo.
I’ve used https://loki.js.org/ in the past. Would recommend.
Ive used backstopjs for this in the past https://github.com/garris/BackstopJS