ESLint v10.x requires the new flat config format (eslint.config.js),
but the project uses the old .eslintrc.json format. Downgrading to
ESLint v8.x which supports the legacy configuration format.
- Install Bun via mise
- Update package.json scripts to use Bun
- Migrate unit tests from Vitest to Bun test runner
- Migrate component tests from Vitest to Bun test runner
- Configure Bun with DOM environment for React Testing Library
- Keep Playwright for E2E tests (as planned)
- 93/100 tests passing (7 flaky tests when running all together, pass individually)
david