import { IDomainEvent } from '../../../contracts/src/index.ts';
/**
 * Error thrown when a GWT aggregate test assertion fails.
 * Provides formatted context showing Given/When/Then steps.
 *
 * @public
 * @stable
 * @since 0.24.0
 */
export declare class GWTAssertionError extends Error {
    readonly givenEvents: ReadonlyArray<IDomainEvent>;
    readonly expectedEvents: ReadonlyArray<IDomainEvent>;
    readonly actualEvents: ReadonlyArray<IDomainEvent>;
    readonly expectedError?: string | undefined;
    readonly actualError?: Error | undefined;
    constructor(givenEvents: ReadonlyArray<IDomainEvent>, expectedEvents: ReadonlyArray<IDomainEvent>, actualEvents: ReadonlyArray<IDomainEvent>, expectedError?: string | undefined, actualError?: Error | undefined);
    private static formatMessage;
}