import type { SegmentReadFailureKind } from '../errors';
import { AgentPortError, SegmentReadError } from '../errors';
export declare function flattenAgentMessage(detail: string): string;
export declare function agentErrorDetail(cause: unknown): string | undefined;
export declare function agentPortError(operation: string, cause: unknown): AgentPortError;
export declare function classifyAgentFailure(cause: unknown): {
    failure: SegmentReadFailureKind;
    httpStatus?: number;
};
export declare function segmentReadError(operation: string, cause: unknown): SegmentReadError;
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