Error page for direct access to package with code examples

[jdebarochez]

Hello!

Summary

Users can experience 500 errors when accessing via direct link packages (ie: https://replacements.fyi/is-number) which show display highlighted code examples. https://replacements.fyi/left-pad still works. Cloudflare Worker logs will provide better insights on why it's actually failing.

Steps to reproduce

1. Navigate to https://replacements.fyi/is-number
2. Experience a 500 error

Investigation

Going to the search for is-number, the link still works. https://replacements.fyi/left-pad still works too. I believe the failure is strongly correlated with the SSR highlighter invocation in the Worker for simple packages with examples:

{:else if data.type === 'simple'}
  {#if data.example}
    {@html await highlight(data.example)}
  {/if}

Native, documented, and removal replacements do not use that branch, so they avoid the failing SSR operation