import { CachedDataCollector } from "src/core/base/CachedDataCollector";
import { TrackerVariableType } from "src/core/model/TrackerVariableType";
/**
 * Collects device/browser/environment information.
 * Mirrors Android DeviceCollector — adapted for web environment.
 */
export declare class DeviceCollector extends CachedDataCollector {
    private fingerprintPromise;
    private resolvedFingerprint;
    private initTimestamp;
    collect(): Map<TrackerVariableType, unknown>;
    /**
     * Returns the resolved fingerprint synchronously if available,
     * otherwise returns the pending Promise.
     */
    private getFingerprint;
    /**
     * Pre-load fingerprint so it's ready when collect() is called.
     * Must be awaited before the first event fires.
     */
    initFingerprint(): Promise<string>;
}