anyone know how to integrate cal.com to your next.js site

i recommend the react embed https://docs.cal.com/integrations/embed

what should the name and email be i get an error for johndoe

Name and email are for prefilling the booker's details in the embed(if you have those details about the booker with you) . You can completely skip them(though you shouldn't get an error with those example values(John Doe) ) Here is an example usage in react https://codesandbox.io/embed/cal-component-embed-inline-demo-react-typescript-d1zlcn?codemirror=1