Cannot publish jsr package using `bun:`-import specifier, error: invalidexternalimport

[Hexagon]

Version: Deno 1 , 2 and 2.1

Long running issue... I'm trying to publish @cross/test to jsr. This library does a conditional import of bun:test if running Bun, and this error pops up while trying to publish - https://jsr.io/docs/troubleshooting#invalidexternalimport

The code is dynamically imported, so it would never execute in Deno

} else if (CurrentRuntime == Runtime.Bun) {
  const { wrappedTest } = await import("./shims/bun.ts");

... and the actual problem is in ./shims/bun.ts (which again is conditionally imported):

import { test } from "bun:test";
// ...

I originally posted this in as an issue in jsr-io/jsr (https://github.com/jsr-io/jsr/issues/599) , but have figured out that the problem may live in Deno itself:

An outdated error message (as bun-specifiers should be supported by now):

https://github.com/denoland/deno/blob/dd8cbf5e29d9949e3adac9b9d8ce5fb73b5b0ad0/cli/tools/registry/diagnostics.rs#L479

And a function potentially missing a case for bun::

https://github.com/denoland/deno/blob/dd8cbf5e29d9949e3adac9b9d8ce5fb73b5b0ad0/cli/tools/registry/graph.rs#L35

[bartlomieju]

It appears that this would be solved by https://github.com/denoland/deno/pull/24588, but not sure if that PR is landable.

[nathanwhit]

Seems like it could be landed if someone picks it up, just needs to be rebased and CI failures fixed