/*!
 * Copyright (C) Microsoft Corporation. All rights reserved.
 */
import { type Channel } from '@microsoft/managed-apps-common/communication';
/**
 * Get or create the App SDK's dedicated channel to the host.
 *
 * When `window.__platformBridge` is available (runtime — bridge script injected
 * by the gateway), the bridge's `initialize()` method creates the channel.
 *
 * When the bridge is absent (authoring — no bridge script), the SDK falls back
 * to creating a MessageChannel directly and transferring a port to the host
 * via `window.parent.postMessage`.
 *
 * The channel is cached — subsequent calls return the same instance.
 */
export declare function getSdkChannel(): Promise<Channel>;
//# sourceMappingURL=sdkChannel.d.ts.map