import { MessageRequestWithRequiredProperties } from './messageObjects';
import { ApiVersionNumber } from './telemetry';
export declare const nestedAppAuthTelemetryVersionNumber: ApiVersionNumber;
/**
 * @hidden
 * Enumeration for nested app authentication message event names.
 *
 * @internal
 * Limited to Microsoft-internal use
 *
 * @enum {string}
 *
 * @property {string} Request - Event name for a nested app authentication request.
 * @property {string} Response - Event name for a nested app authentication response.
 */
export declare const enum NestedAppAuthMessageEventNames {
    Request = "NestedAppAuthRequest",
    Response = "NestedAppAuthResponse"
}
/**
 * @hidden
 * Interface for a nested app authentication request.
 *
 * @internal
 * Limited to Microsoft-internal use
 *
 * @interface
 * @extends {MessageRequest}
 *
 * @property {string} func - The function name, should always be 'nestedAppAuthRequest'.
 * @property {string} data - data associated with the request, represented as a string.
 */
export interface NestedAppAuthRequest extends MessageRequestWithRequiredProperties {
    func: 'nestedAppAuth.execute';
    data: string;
}
/**
 * @hidden
 * Interface for parsed data from a nested app authentication message.
 *
 * @internal
 * Limited to Microsoft-internal use
 *
 * @interface
 * @property {NestedAppAuthMessageEventNames} messageType - The type of the nested app authentication message event.
 */
export interface ParsedNestedAppAuthMessageData {
    messageType: NestedAppAuthMessageEventNames;
}
/**
 * @hidden
 * Interface for a nested app authentication bridge.
 *
 * @internal
 * Limited to Microsoft-internal use
 *
 * @interface
 *
 * @property {Function} addEventListener - Function to add an event listener to the bridge. Takes an event name and a callback function as parameters.
 * @property {Function} postMessage - Function to post a message to the bridge. Takes a message string as a parameter.
 * @property {Function} removeEventListener - Function to remove an event listener from the bridge. Takes an event name and a callback function as parameters.
 */
export interface NestedAppAuthBridge {
    addEventListener: (eventName: string, callback: (response: string) => void) => void;
    postMessage: (message: string) => void;
    removeEventListener: (eventName: string, callback: (response: string) => void) => void;
}
/**
 * @hidden
 * Interface for a Window object extended with a nested app authentication bridge.
 *
 * @internal
 * Limited to Microsoft-internal use
 *
 * @interface
 * @extends {Window}
 *
 * @property {NestedAppAuthBridge} nestedAppAuthBridge - The nested app authentication bridge associated with the window.
 */
export interface NestedAuthExtendedWindow extends Window {
    nestedAppAuthBridge: NestedAppAuthBridge;
}
/**
 * @hidden
 * Type for handlers in a nested app authentication bridge.
 *
 * @internal
 * Limited to Microsoft-internal use
 *
 * @typedef {Object} NestedAppAuthBridgeHandlers
 *
 * @property {Function} onMessage - Function to handle a message event. Takes a MessageEvent object and a callback function as parameters. The callback function is called when a message is received.
 * @property {Function} handlePostMessage - Function to handle posting a message. Takes a message string as a parameter.
 */
type NestedAppAuthBridgeHandlers = {
    onMessage: (evt: MessageEvent, onMessageReceived: (response: string) => void) => void;
    sendPostMessage: (message: string, apiVersionTag: string) => void;
};
/**
 * @hidden
 * Attempt to polyfill the nestedAppAuthBridge object on the given window
 *
 * @internal
 * Limited to Microsoft-internal use
 */
export declare function tryPolyfillWithNestedAppAuthBridge(clientSupportedSDKVersion: string, window: Window | null, handlers: NestedAppAuthBridgeHandlers): void;
export {};