Migrate to Vitest

[2nofa11]

Tell us about your environment

• ESLint version: 9.x
• eslint-plugin-vue version: 10.3.0
• Node version: 22.15.1

The problem you want to solve.

Test execution could be improved: 11,059 tests take 74 seconds with Mocha in my enviroment.

Your take on the correct solution to problem.

Migrate to Vitest - PoC implemented with proven results.

• https://github.com/2nofa11/eslint-plugin-vue/tree/chore/migrate-to-vitest

PoC Results

Performance: 74s → 24.25s (67% faster)

Additional context

• All 11,059 tests pass without modification
• ESLint RuleTester compatibility
• Codemod.com recipe executed
• All dependencies updated
• test suite validated

[ota-meshi]

Thank you for your suggestions!

Performance: 74s → 24.25s (67% faster)

Wow, that's great! Please open a PR!

[2nofa11]

I open a PR. Please check it when you are free 😄