Cannot publish packages with imported custom `jsx-runtime`

[AljoschaMeyer]

I have been unable to publish packages to jsr which import a custom jsx-runtime from jsr.

Here is a minimal repository that reproduces the issue.

In that repo, I correctly configure a custom jsr runtime:

  "imports": {
    "macromania": "jsr:@wormblossom/macromania@^1.0.1",
    "macromaniajsx/jsx-dev-runtime": "jsr:@wormblossom/macromania@^1.0.1",
    "macromaniajsx/jsx-runtime": "jsr:@wormblossom/macromania@^1.0.1",
    "@std/assert": "jsr:@std/assert@^0.221.0"
  },

  "compilerOptions": {
    "jsx": "react-jsxdev",
    "jsxImportSource": "macromaniajsx",
    "lib": ["deno.ns", "dom"],
    "strict": true
  },

Deno can typecheck and compile everything, deno task test demonstrates that the jsx setup works.

Publishing to jsr, however, fails:

PS C:\Users\mail\projects\jsr_with_custom_jsx> deno publish
Checking for slow types in the public API...
'@aljoscha-meyer/jsr-with-custom-jsx' doesn't exist yet. Visit https://jsr.io/new?scope=aljoscha-meyer&package=jsr-with-custom-jsx&from=cli to create the package
Waiting...
Package @aljoscha-meyer/jsr-with-custom-jsx created
Visit https://jsr.io/auth?code=VJVU-QVQF to authorize publishing of @aljoscha-meyer/jsr-with-custom-jsx
Waiting...
Authorization successful. Authenticated as Aljoscha Meyer
Publishing @aljoscha-meyer/jsr-with-custom-jsx@1.0.0 ...
error: Failed to publish @aljoscha-meyer/jsr-with-custom-jsx@1.0.0

Caused by:
    Failed to publish @aljoscha-meyer/jsr-with-custom-jsx at 1.0.0: failed to build module graph: Module not found "file:///macromaniajsx/jsx-runtime".
        at file:///mod.tsx:1:50

Publishing does work when depending on the runtime locally: see this deno.json whose package successfully published to jsr.

I'm on Windows 10, with deno 2.3.1:

PS C:\Users\mail\projects\jsr_with_custom_jsx> deno --version
deno 2.3.1 (stable, release, x86_64-pc-windows-msvc)
v8 13.5.212.10-rusty
typescript 5.8.3