Andrew Scott a268c4471f refactor(router): restore history in a consistent way on canceled navigations (#43651)
The Router code currently has special-case handling around when and how
the internal state is reset. Specifically, it only resets the internal
tracking of the state when an error is thrown, which does not happen
when guards reject or resolvers return `EMPTY`. Other than the
navigation URL not matching a config, guards rejecting would be the main
cause of a navigation being turned down.

This change updates the router code to always reset the internal state
in the same way, regardless of the reason for navigation cancellation.

In the end, this will only affect _very_ specific use-cases with
`UrlHandlingStrategy`. Because the internal state is not updated until
the end of the transition pipe, the state reset generally doesn't do
anything at all. However, because the `rawUrlTree` is reset by calling
`urlHandlingStrategy.merge` with the _attempted_ `rawUrl` that failed,
the resulting browser URL reset could be different than before (but will
now be consistent with how the URL is reset in other scenarios, like a
URL not matching a `Route` config).

PR Close #43651
2021-10-04 10:55:49 -07:00
…
2021-04-14 09:40:17 -07:00
2021-05-03 10:04:05 -07:00

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