/**
 * Stable identity derivation for mapped entities.
 *
 * These helpers keep entity IDs, row anchors, and shared row-binding IDs
 * deterministic across the system_state and user_input projections.
 */
import type { TypedSheetsEntityMapping } from "./contracts.js";
/** Derives the stable row-binding ID shared by an entity's physical projections. */
export declare function typedSheetsEntityRowBindingId(mapping: TypedSheetsEntityMapping, entityId: string | number): string;
/** Derives and validates the projection anchor for one canonical entity. */
export declare function typedSheetsEntityAnchor(mapping: TypedSheetsEntityMapping, entityId: string | number): string;
/** Reads the mapping's primary key from a pending entity change.
 *
 * Accepts a non-empty string or a safe-integer number and normalizes both to
 * the single canonical string form (`String(id)`) so Sheets, canonical
 * state, and observation agree on `42` vs `"42"`.
 */
export declare function typedSheetsEntityId(mapping: TypedSheetsEntityMapping, entity: object): string;
/** Converts a visible entity ID into the canonical ID used by sync state. */
export declare function typedSheetsCanonicalEntityId(mapping: TypedSheetsEntityMapping, entityId: string | number): string;
/** Converts a canonical sync identity back to the entity-table primary key. */
export declare function typedSheetsEntityIdFromCanonical(mapping: TypedSheetsEntityMapping, entityId: string | number): string;
//# sourceMappingURL=identity.d.ts.map