import { HostMemoryMetrics } from './interfaces';
/**
 * @beta
 * Indicates whether the app performance metrics capability is supported in the current host.
 * @returns boolean to represent whether the shortcutRelay capability is supported
 *
 * @throws Error if {@link app.initialize} has not successfully completed
 *
 */
export declare function isSupported(): boolean;
/**
 * This function is passed to registerHostMemoryMetricsHandler. See {@link HostMemoryMetrics} to see which metrics are passed to the handler during a certain interval of time.
 */
export type HostMemoryMetricsHandler = (metrics: HostMemoryMetrics) => void;
/**
 * @beta
 * Registers a function to handle memory metrics heartbeat sent from the host periodically.
 *
 * @remarks
 * Only one handler can be registered at a time. A subsequent registration replaces an existing registration.
 *
 * @param handler - The handler to invoke each time memory metrics heartbeat is received from the host.
 */
export declare function registerHostMemoryMetricsHandler(handler: HostMemoryMetricsHandler): void;