/** Deterministic Unicode code-point ordering and printable cursor-key encoding. */
/** Unicode code-point comparison (not JavaScript's UTF-16 code-unit ordering). */
export declare function compareCodePointStrings(a: string, b: string): number;
/**
 * Printable ASCII key preserving Unicode code-point order. Six hex digits
 * encode each scalar; `-` terminates the field so prefixes sort first.
 */
export declare function codePointSortKey(value: string): string;
/** Compact opaque continuation identity for an otherwise potentially large sort key. */
export declare function continuationToken(stableKey: string): string;
/** Match a stable sort key to its non-secret opaque pagination identity. */
export declare function matchesContinuationIdentity(stableKey: string, continuationIdentity: string): boolean;
/** Freeze string adjacency into deterministic key and neighbor order. */
export declare function sortedStringAdjacency(input: ReadonlyMap<string, ReadonlySet<string>>): ReadonlyMap<string, readonly string[]>;
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