Mark bun builtin modules as external (fixes #75220) (#77616)
Fixes https://github.com/vercel/next.js/issues/75220
This marks Bun's builtin modules as external, following the same pattern
as for Node.
- `"bun:ffi"`
- `"bun:jsc"`
- `"bun:sqlite"`
- `"bun:test"`
- `"bun:wrap"`
- `"bun"`
I have not manually tested this change yet, nor attempted to write tests
for this. I did check for other places in the code that should be
updated and _maybe_
`externals/crates/next-custom-transforms/src/transforms/warn_for_edge_runtime.rs`
should as well, but I'll leave that up to you whether or not that makes
sense. Opening as a draft until this can be at least manually tested.
By the way, node's `sqlite` module is missing from `NODE_EXTERNALS`.
That seemed out of scope but worth mentioning.
Current error message:
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Co-authored-by: Alistair Smith <hi@alistair.sh>
