Trying to check all sitemap.xml URLs with cypress-axe was too memory heavy. But cypress-axe sure could be helpful for indivual route / page testing.
Got better results with axe and puppeteer for ~100 URLs and two viewports (desktop, mobile) - just frequent restarts of headless browser needed between runs For testing ~1000 or more URLs, it could take some time tough. https://www.npmjs.com/package/@axe-core/puppeteer
