import { ConfigItem } from "src/core/model/TrackerConfig";
import { TrackerVariableType } from "src/core/model/TrackerVariableType";
import { CacheStrategy } from "src/core/model/VariableCollectionMetadata";
import { BaseDataCollector } from "./BaseDataCollector";
/**
 * Collector with TTL-based caching.
 * Mirrors Android CachedDataCollector.
 *
 * Each variable can have a different cache strategy (FAST: 10s, MEDIUM: 1min, SLOW: 5min, HEAVY: session).
 * If the cached value is still fresh, the supplier is not called.
 */
export declare abstract class CachedDataCollector extends BaseDataCollector {
    private cache;
    /**
     * Collect with caching: only re-evaluate if cache has expired.
     */
    protected collectWithCache(data: Map<TrackerVariableType, unknown>, variableType: TrackerVariableType, strategy: CacheStrategy, supplier: () => unknown, configs?: ConfigItem[]): void;
    /**
     * Invalidate a specific cached variable.
     */
    protected invalidateCache(variableType: TrackerVariableType): void;
    /**
     * Clear all cached values.
     */
    protected clearCache(): void;
}