Theoretically yes, but if you think of the metric of % of library-interacting lines of code an average library user needs to change to upgrade, React Router has

Theoretically yes, but if you think of the metric of % of library-interacting lines of code an average library user needs to change to upgrade, React Router has been a huge outlier compared to other libraries in the React ecosystem. Your routing components would change completely. And the maintainers saw no problem with this.