Node 18 support broken

[noahw3]

Describe the bug

Starting with version 1.5.11, running with node 18 started failing with the error TypeError [ERR_INVALID_ARG_TYPE]: The "paths[0]" argument must be of type string. Received undefined.

I don't see any documentation about minimum supported node versions, and this broke in a patch update. It seems to be from a transitive dependency update (unplugin 3.3.0?). Was this intended?

If node 18 support has been dropped I think that's acceptable. However it should be documented and ideally happen with a major version bump.

Reproduction

Can provide if needed

System Info

System:
    OS: macOS 26.5.2
    CPU: (18) arm64 Apple M5 Pro
    Memory: 327.92 MB / 48.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.20.0 - /Users/noah.wilson/.nvm/versions/node/v18.20.0/bin/node
    npm: 10.5.0 - /Users/noah.wilson/.nvm/versions/node/v18.20.0/bin/npm
    pnpm: 10.34.1 - /opt/homebrew/bin/pnpm
  Browsers:
    Chrome: 152.0.7977.77
    Safari: 26.5.2

Used Package Manager

pnpm

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