import { type ArgumentsHost, type ExceptionFilter } from "@nestjs/common";
import { WorkflowError } from "@duraflows/core";
/**
 * Maps duraflows domain errors to HTTP statuses for the optional REST
 * controllers. Without this filter, a missing instance or an event invalid
 * for the current state surfaces as a generic 500 and leaks internal
 * messages.
 */
export declare class WorkflowExceptionFilter implements ExceptionFilter {
    private readonly logger;
    catch(exception: WorkflowError, host: ArgumentsHost): void;
}
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