import { notifyPropertyChangedSymbol } from '../notify/notifyPropertyChangedSymbol';
import { Observable } from 'rxjs';
import { EqualityComparer } from '../util/isEqualityComparer';
declare const NotifyPropertyChangedBaseSubject: unique symbol;
export declare abstract class NotifyPropertyChangedBase {
    private readonly [NotifyPropertyChangedBaseSubject];
    [notifyPropertyChangedSymbol]: Observable<keyof this>;
}
export declare function NotifyPropertyChanged<TFunction extends {
    new (...arguments_: any[]): {};
}>(target: TFunction): TFunction;
export declare function NotifyChanged<T>(equalityComparer?: EqualityComparer<T>): (target: Object, propertyKey: string | symbol) => void;
export {};