fix: duplicate import added when import path contains hyphens (#859)

[a-h]

No description provided.

[joerdav]

Cool, this looks good to me!

Will take a look again once you're ready!

[a-h]

I think the issue was actually in the underlying imports repo. Now, duplicate imports aren't being added by the tooling.

I've added a unit test to capture the expected behaviour:

• If the import isn't used, it's removed by the go imports.Process package, since the referenced name can't be resolved.

package main

import (
	"context"
	"os"
        // Next line is removed.
	"templ/testproject/css-classes"
)

templ View() {
}

func main() {
	View().Render(context.Background(), os.Stdout)
}

• If the import is present, it's not removed:

package main

import (
	"context"
	"os"
        // Next line is retained.
	cssclasses "templ/testproject/css-classes"
)

templ View() {
	{ cssclasses.Header }
}

func main() {
	View().Render(context.Background(), os.Stdout)
}

• If the import is not named, the name is added:

• If the import isn't used, it's removed by the go imports.Process package, since the referenced name can't be resolved.

package main

import (
	"context"
	"os"
	cssclasses "templ/testproject/css-classes"
)

templ View() {
	{ cssclasses.Header }
}

func main() {
	View().Render(context.Background(), os.Stdout)
}

[joerdav]

Okay that makes sense! The fix is the version bump of the experimental modules, great looks good to me then