UrlTree created by Router.createUrlTree might incorrectly have fragment === undefined #34197
Description
🐞 bug report
Affected Package
The issue is caused by package @angular/router, particularly by the method Router.createUrlTree.
Is this a regression?
To my knowledge, no.
Description
When creating a UrlTree using Router.createUrlTree without passing any fragments, the resulting UrlTree contains a fragment === undefined. This does not conform to its type signature.
🔬 Minimal Reproduction
🌍 Your Environment
Angular Version: 8.0.0