Bug when rewriting relative import in un-optimized node_modules

[csr632]

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Describe the bug

When dev server rewriting relative import inside un-optimized node_modules, the rewrited path is wrong and cause 404 when request the child modules.

This is the same issue with #204 but I didn't provide reproduction. So I open this issue.

Reproduction

Here is a minimal reproduce:
https://github.com/csr632/test-vite/tree/wrong-resolve

System Info

• required vite version: 0.16.6

[csr632]

I am working on this