/**
 * Total, side-effect-contained formatting helpers for extension boundaries.
 *
 * These helpers are intentionally internal. Extension code can throw arbitrary
 * JavaScript values, including values whose coercion hooks throw.
 */
export declare const UnprintableThrownValue: "[unprintable thrown value]";
/** Describe a thrown value without allowing its coercion hooks to escape. */
export declare function describeThrownValue(value: unknown): string;
/** Serialize diagnostic metadata while preserving cycles and bigint values. */
export declare function stringifyAuditValue(value: unknown): string;
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