lazarljubenovic 06a8ad28a7 refactor(forms): use a type guard to get rid of casts (#32541)
Use an explicit type guard when checking if a given object is of type AbstractControlOptions,
instead of a simple function returning a boolean value. This allows us to remove manual type
casting when using this function, relying instead on TypeScript to infer correct types.

PR Close #32541
2020-06-03 12:29:26 -07:00
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