/**
 * Base specification pattern implementation.
 *
 * Specifications encapsulate query logic, making it reusable and composable.
 * They represent a predicate that determines if an object satisfies some criteria.
 */
export declare abstract class Specification<T> {
    /**
     * Determines if the candidate object satisfies this specification
     */
    abstract isSatisfiedBy(candidate: T): boolean;
    /**
     * Combines this specification with another using AND operator
     */
    and(other: Specification<T>): Specification<T>;
    /**
     * Combines this specification with another using OR operator
     */
    or(other: Specification<T>): Specification<T>;
    /**
     * Negates this specification
     */
    not(): Specification<T>;
}