import { Observable } from 'rxjs';
export type MethodReturning<T> = (...args: any[]) => T;
export interface ShareOptions {
    when?: MethodReturning<boolean>;
}
export declare function Share(opts?: ShareOptions): (target: object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<MethodReturning<Observable<any>>>) => TypedPropertyDescriptor<MethodReturning<Observable<any>>>;