Suggestion

Post-Vitest Migration: Fixes & Improvements

• Use the@nx/vite:test executor inproject.json to align with other workspaces.
• Fix path-related issues that causevitest --project=eslint-plugin to fail.
• Replace.each with the new.for syntax to allow running the tests concurrently viavitest --sequence.concurrent=true, which does speed up local testing.
• Replacefs withfs/promises to take advantage ofvitest’s better support for async/ESM code (vs.jest's preference for sync/CJS).
• Remove the manual__dirname indocs.test.mts.vitestbackportsimport.meta.dirname,import.meta.filename as well asimport.meta.resolve() for older versions of Node.js.
• Convert manually thrown errors in unit tests to standardvitest assertions.
• Fix issue related toinvalidCases inno-unnecessary-template-expression.test.ts.
• Refactor remaining loops to use.for syntax.
• Add atest-single target toproject.json.
• Correct theoutDir path intsconfig.spec.json.

Additional Info

I will submit a draft PR for this shortly.