Explain getStaticPaths in Next.js: usage and return value.

Question

How does getStaticPaths work in Next.js, and when would you use it?

Accepted Answer

You would use it when you have pages with dynamic parameters (like /posts/[id]) and want static generation for some or all paths.

Accepted Answer

It returns an object with a paths array and a fallback property.

Accepted Answer

getStaticPaths is used with dynamic routes to specify which paths should be pre-rendered at build time.

Question from the Next.js test