I added the getStaticProps function, however, the rendering function only receives the route params, ignoring the getStaticProps.
I'm trying to use getStaticProps so that the page is rendered only once per combination of topic/lang.

here is the code and a image of my folder's structure:

// page.tsx

export default function Home(props: {
  params: { topic: string; lang: string };
}) {
  console.log(props);
  // { params: { topic: 'home', lang: 'null' }, searchParams: {} }
  // url: http://localhost:3000/home/null
  ...
}

...

export const getStaticProps = ({
  params,
}: {
  params: { topic: string; lang: string };
}) => {
  return {
    props: {
      topic: isValidTopic(params.topic) ? params.topic : "home",
      lang: isValidlang(params.lang) ? params.lang : "pt-br",
    },
  // { props: { topic: 'home', lang: 'pt-br' }}
  // url: http://localhost:3000/home/null
  };
};1