Function observableField

observableField(target: unknown, key: string): void
indicates that this field is an observable field, and should be observed for changes.
Parameters
- target: unknown
- key: string
Returns void
observableField(alwaysNotify?: boolean): (target: unknown, key: string) => void
indicates that this field is an observable field, and should be observed for changes.
Parameters
- OptionalalwaysNotify: boolean
  When true, registers the field on HsObservable.onlyNotifyOnChangeKeys so setField notifies even when the new value equals the previous. Default false: duplicate values do not notify observers.
Returns (target: unknown, key: string) => void