StateJsonEditor should ignore package.json because upm's package.json is displayed by a dedicated Inspector. This can be avoided by https://github.com/mattak/Unidux/pull/142/commits/ae28b2ee46e9942a71c006ace21727aa5a68048f in #142. **View the inspector of package.json before unidux installation**  **View the inspector of package.json after unidux installation** 