The regex we use for detecting TypeScript directives was originally adapted from tslint. Since then (I think??) TypeScript has added multiline comment support for directives.

You can see

Please describe what the rule should do:

Using the tag property for RouterLink or NuxtLink is usually a bad idea because it removes out-of-the-box accessibility (further: vuejs/vue-router-next#148 (comment)). This rule should throw an error if people try to change the tag.

PS: The tag prop will be removed in future majors of vue-router.

I have found using jest.doMock over jest.mock works better because it is predictable and works well with resetMocks, resetModules and restoreMocks.