Cannot @import css files under node_modules #794
Description
Reproduction link or steps
https://github.com/issueset/tsdown-issue-css-import-node.git
What is expected?
Check dist/esbuild/style.css for expected output
What is actually happening?
Error:
[plugin @tsdown/css]
Error: ENOENT: no such file or directory, open '/private/tmp/2026-03-04_22-47-42/tsdown-issue-css-import-node/src/prosemirror-view/style/prosemirror.css'
at async open (node:internal/fs/promises:642:25)
Any additional comments?
No response