Environment

Node v20.10.0

Package(s) The family of tools in https://github.com/pkg-tools/pkg-tools e.g.

https://www.npmjs.com/package/@pkg-tools/build
https://www.npmjs.com/package/@pkg-tools/clean
https://www.npmjs.com/package/@pkg-tools/format
https://www.npmjs.com/package/@pkg-tools/lint
https://www.npmjs.com/package/@pkg-tools/sync

Reproduction

The easiest explanation/reproduction is this pull request.

I had to add failOrWarn: false to all of the CLI package's build configurations due to them iteratively generating the outputs that satisfy the package.json's exports field.

Describe the bug

When passing a set of build configurations (i.e., BuildConfig[]) whose outputs will cumulatively satisfy the exports specified in the package.json's exports field, unbuild will fail on validation after the first output due to the package.json's exports not existing in the output directory.

Additional context

I'm more than happy to contribute a fix.

Logs

No response