/**
 * Return canonical JSON bytes contributed by one array item, including its
 * leading comma when the array already contains an item.
 */
export declare function canonicalArrayItemBytes(value: unknown, existingLength: number): number;
/** Return the canonical JSON byte length of one stored evidence value. */
export declare function measureCanonicalJsonBytes(value: unknown): number;
/** Build inclusion and truncation facts for one bounded collection. */
export declare function evidenceInclusion(total: number, included: number): {
    readonly total: number;
    readonly included: number;
    readonly truncated: boolean;
};
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