diegomura/react-pdf ? reverse-engineered prompt

Build me a React based PDF generator that lets me create PDF documents from components, both in the browser and on the server.

I want to be able to define pages, text, and layout blocks with simple styles, then preview the result in the app and also save it as a PDF file. The layout should feel natural, with flexible rows and columns, spacing, padding, background colors, and multiple sections on a page. Please include a simple example document so I can see how to use it right away, and make sure it can render a PDF viewer in the browser or write the PDF to a file in Node.

If you need to check any current docs or best practices while building it, go ahead and look them up online.