The NavigationTransition interface of the Navigation API represents an ongoing navigation — a navigation that hasn't yet reached the navigatesuccess or navigateerror stage.
It is accessed via the Navigation.transition property. Note that this property is only populated while the intercept() handler is unresolved (i.e., during a navigation interception), and is otherwise null.
committed Read onlyReturns a Promise that fulfills when Navigation.currentEntry is updated and the new URL is displayed in the browser, marking the navigation as committed.
finished Read onlyReturns a Promise that fulfills at the same time the navigatesuccess event fires, or rejects at the same time the navigateerror event fires.
from Read onlyReturns the NavigationHistoryEntry that the transition is coming from.
Returns the type of the ongoing navigation.
to Read only Returns the NavigationDestination that the transition is navigating to.
async function cleanupNavigation() {
await navigation.transition.finished;
// Navigation has completed successfully
// Cleanup any ongoing monitoring
}