Dynamic routing behaves differently in Dev vs Prod

[Timer]

In dev, prerendered pages have their queries empty. In prod, the queries are the placeholders [param].

The desired behavior is for both of these to be empty. Not sure if we should use undefined, null, or ''.

I'm leaning towards null or empty string.

This must have a failing test added in a PR before it can be fixed.

[brunolemos]

I'm using v9, useRouter returns an empty query object in the first render (from server):

Why is that the desired behavior? I expected the autostart to be inside query.

[Timer]

@brunolemos your page is likely being statically optimized, meaning it was prerendered without any query parameters -- in production, this means your page isn't being rendered on-request (SSR).

The page will hydrate on the client and trigger the router update, at which point you can handle the autostart feature.

[brunolemos]

Got it! My bad, I was using useEffect(..., []) because I thought it was gonna be included in the first render, but it does arrive on a later render.

[balazsorban44]

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