/**
 * @module util/device-helper
 *
 * Pure utility functions for generating clean, friendly, auto-generated device names/tags.
 */
export interface DeviceTagOptions {
    userAgent?: string;
    userAgentData?: {
        mobile?: boolean;
        platform?: string;
        brands?: Array<{
            brand: string;
            version: string;
        }>;
    };
    maxTouchPoints?: number;
    screenWidth?: number;
    randomSuffix?: string;
}
/**
 * Generates a friendly, URL-safe, kebab-cased default device tag.
 * (e.g., `chrome-win-a1b2`, `mobile-safari-ios-3c4d`, `tablet-android-e5f6`).
 *
 * Pure function: Uses global browser objects (`navigator`, `window`) only as fallbacks
 * when explicit options are omitted, enabling deterministic unit testing.
 *
 * @param opts Optional mock options for deterministic unit testing.
 */
export declare function generateDefaultDeviceTag(opts?: DeviceTagOptions): string;
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