/**
 * @beta
 * @hidden
 * User information required by specific apps
 * @internal
 * Limited to Microsoft-internal use
 * @module
 */
import { UUID } from '../../public/uuidObject';
/**
 * @hidden
 * @internal
 * Limited to Microsoft-internal use
 * @beta
 * @returns boolean to represent whether copilot.customTelemetry capability is supported
 *
 * @throws Error if {@linkcode app.initialize} has not successfully completed
 */
export declare function isSupported(): boolean;
/**
 * Sends custom telemetry data to the host.
 *
 * @param { UUID } stageNameIdentifier - The stageName UUID identifier for the telemetry data.
 * @param { number } [timestamp=getCurrentTimestamp() ?? Date.now()] - The timestamp of the telemetry data. Defaults to the current timestamp.
 * @returns { Promise<void> } - promise resolves when the host SDK acknowledges that it has received the message.
 * @throws { Error } - Throws an error if the app has not been successfully initialized or the host SDK returns an error as a response to this call
 *
 * @hidden
 * @internal
 * Limited to Microsoft-internal use
 * @beta
 */
export declare function sendCustomTelemetryData(stageNameIdentifier: UUID, timestamp?: number): Promise<void>;