Christopher Allen 032b5ed9ea refactor(events): Introduce and use event type predicates (#8538) ...

* refactor(events): Introduce type predicates for event classes

  Introduce predicates for testing Abstract event subclasses based on
  their .type properties.  These are useful because there are places
  where it is not possible to use instanceof <ClassConstructor> tests
  for type narrowing due to load ordering issues that would be caused
  by the need to import (rather than just import type) the class
  constructors in question.

* refactor(events): Use event type predicates

  Simplify several sections of code by using type predicates for
  type narrowing and thereby avoiding the need for explicit casts.

* chore(events): Fix copyright date of recently-added files

* chore: Remove unused import

2024-08-20 19:50:29 +01:00

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