How does vue3 get the current page route instance in non-vue file？

[alamhubb]

I want to develop a utility class. The tool class provides a method to return the current page routing instance. How to achieve?
useRouter doesn't work in non-Vue files

I saw a way to rely on store implementation. Is there any function that does not depend on third-party implementation? Why is useRouter limited to be used only on vue component pages?

[posva]

useRouter, like other composables, depend on inject() and thus can only be used within setup(). If you are not doing SSR, you can just import the router instance