Import Protection: Shift Left

[jamesarosen]

I recently upgraded to @tanstack/solid-start@1.167.56 and started getting import protection warnings. This is a great feature. Thank you, @schiller-manuel!

This example code runs in the standard middleware stack, so any page-load should trigger it. The fix is straightfoward: move the import inside the .server() block at the bottom of the file.

I've noticed that the warnings only emit when Tanstack (Vite) encounters the import. If it's a dynamic import, it may be quite a while before someone happens to invoke that code-path and notices the warning.

Despite the warning, my production builds are working fine. The { dev: 'mock', build: 'error' } default doesn't seem to be doing anything. Nor does overriding it with { behavior: 'error' }.

I'd love to shift these issues left. Ideally, some sort of deterministic check that I can put in my lint / test cycle as a guardrail for agents.