The second round of issues I found while testing v4 beta: - problem A: `Cannot read property 'properties' of undefined` from a jest config file when importing jest-dom ```javascript require('@testing-library/jest-dom') // ... foo() ``` - problem B: `prefer-user-event` shouldn't be included in any preset, since `user-event` might not be installed. In the future, it would be nice to detect if `user-event` installed to auto-enable this rule. For now, it's better to leave out of all presets - problem C: `no-debug` should be set as "error" in presets, in the same way as `no-console` is at "error" level on `eslint:recommended` preset.