Imported directives have their tokens rendered for IntelliSense

[NTaylorMullen]

We currently only verify that source locations do not equal null when rendering directive token nodes. This isn't sufficient, we need to verify that a token node's source location also exists in the primary document.

[ajaybhargavb]

What about the default imports aka https://github.com/aspnet/Razor/blob/dev/test/Microsoft.AspNetCore.Mvc.Razor.Extensions.Test/TestFiles/Output/DesignTime/Basic.cs#L36-L79?

[rynowak]

Default imports won't have a source file associated with them

[NTaylorMullen]

What about the default imports aka https://github.com/aspnet/Razor/blob/dev/test/Microsoft.AspNetCore.Mvc.Razor.Extensions.Test/TestFiles/Output/DesignTime/Basic.cs#L36-L79?

They shouldn't be rendered.

[ajaybhargavb]

c1500da