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@opennextjs/cloudflare
patch

Fix Turbopack external module resolution on workerd by dynamically discovering external imports at build time.

When packages are listed in serverExternalPackages, Turbopack externalizes them via externalImport() which uses dynamic await import(id). On workerd, the bundler can't statically analyze import(id) with a variable, so these modules aren't included in the worker bundle.

This patch:

  • Discovers hashed Turbopack external module mappings from .next/node_modules/ symlinks (e.g. shiki-43d062b67f27bbdc → shiki)
  • Scans traced chunk files for bare external imports (e.g. externalImport("shiki")) and subpath imports (e.g. shiki/engine/javascript)
  • Generates explicit switch/case entries so the bundler can statically resolve and include these modules