Changelog - 2026-10-18

Auto artifacts load the running tree

Bug Fix

In one line. AutoArtifacts, ArtifactGroup.define and ArtifactGroup.application work for an application that runs its tsc dist, in development, in tests and in a binary.

What changed

• The registered class is the running class. The scan still reads src, but each class is now loaded from the tree the application runs: dist/services/a.service.js for src/services/a.service.ts, CommonJS or ESM. Before, an application running dist registered a second copy of every class, loaded from src - module state, side effects and instanceof checks no longer matched the running code.
• A stale build is an error. A class in src with no compiled copy stops the start with an error asking for a rebuild.
• Groups in a compiled tree. A shared package consumed through its dist defines its groups there; they resolve the same way, and IgnisArtifactsPlugin inlines them in a binary, including tsc's CommonJS output.

Who is affected

• Applications that run dist with auto artifacts or groups. Upgrade; nothing else to change. For a binary, add IgnisArtifactsPlugin.create() to the Bun.build plugins.
• Applications that run src. No change.

Files: packages/boot/src/bun/sources.ts, packages/boot/src/bun/plugin.ts