Chunk file name hashes depend on absolute path of project

[wmassa]

Rollup Version

2.78.1

Operating System (or Browser)

Mac OS

Node Version (if applicable)

No response

Link To Reproduction

https://github.com/wmassa/rollup-directory-hash-repro

Expected Behaviour

According to the documentation, chunk file names are based on content hashes. I think this means that a project should have the same filenames no matter the absolute path of the project.

Actual Behaviour

The chunk file names change if you rename the directory of a project.

I created a repro where the same project is in a directory a and b. Rollup generates different filenames for the chunks. This is weird as I expect both projects to generate the same chunk files.

E.g. for me, it created a file called Bundle-692bf0ae.js in folder a and a file called Bundle-b8a1dd7d.js in folder b.

Thanks for looking!

[lukastaegert]

Fixed in #4549