Upgrading to Angular 6 gives error this.router.events.filter is not a function · Issue #45 · vinaygopinath/ng2-meta · GitHub
Ability to check for previous route with router.events.subscribe · Issue #11268 · angular/angular · GitHub
Enabling The Second-Click Of A RouterLink Fragment Using onSameUrlNavigation Reload In Angular 7.1.3 on Vimeo
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