[isamu]

Summary

Replaces __dirname with import.meta.dirname in the three places vite.config.ts uses it, the entry points of the library build.

The package is "type": "module", so __dirname is not defined in the config. It worked only because Vite's default (bundling) config loader fills it in. Loaded as native ESM (--configLoader runner), vitest and vite build stopped at startup with ReferenceError: __dirname is not defined. This is what had kept Codex's environment from running vitest.

Items to Confirm

• The build output is the same. A yarn build before and after the change, and the hashes of every file under dist/ compared: all identical.
• The runner loader now works. npx vitest run --configLoader runner passes, and npx vite build --configLoader runner succeeds. Both failed at startup before.
• yarn test (the default loader), yarn lint and yarn typecheck pass, and npx vite (the demo's dev server) answers 200.
• import.meta.dirname needs Node 20.11 or later; engines is already >=22.
• Not type-checked: vite.config.ts is not in tsconfig.json's include, and @types/node is not installed. So this file's types are not checked, as with __dirname before.

User Prompt

• Is __dirname worth fixing? If so, go ahead.

🤖 Generated with Claude Code

work in GUIChatPluginSpreadsheet

[isamu]

CODEX VERDICT: LGTM

Axis	Result
correctness and edge cases	none
security (injection / path traversal / code evaluation)	none
tests: does a test go red if the new behaviour breaks	none — npx vitest run --configLoader runner: 2 files / 32 tests passed; yarn test:engine: 2,216 tests passed
API / schema / wire / on-disk compatibility	none
consistency with the rest of the codebase	none
i18n lockstep (src/lang has 8 locales)	none
TIER S (one config file; build output byte for byte)	none — the change only replaces the config’s directory lookup; the three resolved entry paths remain the same
build: __dirname/config CommonJS consumers and CI Node versions	none — no other runtime __dirname dependency was found; CI runs Node 22, 24, and 26, all supporting import.meta.dirname
verify	none — npx vite build --configLoader runner and yarn typecheck passed; lint had only existing warnings

Reviewed SHA: 400c8e003b4e2e44c9163e970a2372609df1b4ad.

Mutation sweep: not run; no mutation is proposed.

FINDINGS COMPLETE: I read every hunk of the diff and this is every finding I have.