/**
 * Allocation-neutral cumulative counters for correlating TUI activity with
 * process memory samples. Keep this module payload-free: counters must never
 * retain provider text, tool outputs, actions or React state.
 */
export interface TuiMemoryCounters {
    appRenders: number;
    providerTextDeltaEvents: number;
    providerTextDeltaChars: number;
    providerThinkingDeltaEvents: number;
    providerThinkingDeltaChars: number;
    providerResponses: number;
    toolProgressEvents: number;
    toolProgressChars: number;
    toolExecutedEvents: number;
    toolOutputBytes: number;
    streamFlushes: number;
    historyRetainedEntries: number;
    historyGroupedEntries: number;
    historyMountedGroups: number;
    historyMountedEntries: number;
    historyCachedGroups: number;
    historyMeasuredGroups: number;
    historyViewportRows: number;
    historyTotalRows: number;
}
export declare function recordTuiAppRender(): void;
export declare function recordProviderTextDelta(chars: number): void;
export declare function recordProviderThinkingDelta(chars: number): void;
export declare function recordProviderResponse(): void;
export declare function recordToolProgress(chars: number): void;
export declare function recordToolExecuted(outputBytes: number | undefined): void;
export declare function recordStreamFlush(): void;
export declare function setTuiHistoryMemoryGauges(gauges: Pick<TuiMemoryCounters, 'historyRetainedEntries' | 'historyGroupedEntries' | 'historyMountedGroups' | 'historyMountedEntries' | 'historyCachedGroups' | 'historyMeasuredGroups' | 'historyViewportRows' | 'historyTotalRows'>): void;
export declare function snapshotTuiMemoryCounters(): Readonly<TuiMemoryCounters>;
/** Test-only reset. Production counters are lifetime-monotonic. */
export declare function resetTuiMemoryCounters(): void;
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