import type { HsonNode, Primitive } from "../../core/types.js";
/**
 * Internal exact-value primitive shared with Locus's graph-content boundary.
 * The returned string is deterministic Hson data, not source-style document Hson.
 */
export declare function encode_exact_hson_value(value: HsonNode | Primitive, options?: ViewStateSnapshotCodecOptions): string;
/** Internal inverse of `encode_exact_hson_value`. */
export declare function decode_exact_hson_value(payload: string, options?: ViewStateSnapshotCodecOptions): HsonNode | Primitive;
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