/**
 * Timing helpers for mapped persistence diagnostics.
 *
 * Timing callbacks are deliberately best-effort: observability failures must
 * never abort the entity transaction they describe.
 */
import { type SyncTimingOperationCounts, type SyncTimingOperationKind, type SyncTimingSink } from "../../../contracts/shared/observability/syncTiming.js";
import { type ScalarEntityFlushChange } from "../../../contracts/storage/scalar.js";
import type { MappedChangePlan, ResolvedWriterOptions } from "./contracts.js";
/** Converts public entity lifecycle kinds into timing operation kinds. */
export declare function timingOperationKind(value: ScalarEntityFlushChange["kind"]): SyncTimingOperationKind;
/** Counts one lifecycle operation for aggregate diagnostics. */
export declare function countsForOperationKind(operationKind: SyncTimingOperationKind): SyncTimingOperationCounts;
/** Counts all mapped lifecycle plans in one flush. */
export declare function countsForPlans(plans: readonly MappedChangePlan[]): SyncTimingOperationCounts;
/** Lists only operation kinds represented by the supplied aggregate counts. */
export declare function operationKindsForCounts(counts: SyncTimingOperationCounts): readonly SyncTimingOperationKind[];
/** Emits diagnostics without allowing a faulty sink to affect persistence. */
export declare function emitTiming(writer: ResolvedWriterOptions, event: Parameters<SyncTimingSink>[0]): void;
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