interface PerformanceMethods {
    /**
     * Returns data that doesn't change during the session.
     */
    getDeviceDetails?: () => {
        deviceMemory: number;
    };
    /**
     * Returns data that can change during the session.
     */
    getCurrentDeviceDetails?: () => {
        jsHeapSizeLimit: number;
        totalJSHeapSize: number;
        usedJSHeapSize: number;
    };
}
export declare const getPerformanceMethods: () => PerformanceMethods;
export {};