import { type Channel, type JsonRpcRequest, type JsonRpcResponse } from '../transport.js';
import type { ProviderDetail } from './types.js';
/** Options for creating a {@link BrowserExtensionChannel}. */
export interface BrowserExtensionChannelOptions {
    /** The provider details obtained during extension discovery. */
    providerDetail: ProviderDetail;
    /**
     * The window to listen for extension events on.
     * @default globalThis.window
     */
    window?: Window;
}
/**
 * A {@link Channel} implementation that communicates with a browser
 * extension signer via the ICRC-94 provider API.
 *
 * Messages are sent through `providerDetail.sendMessage` and responses
 * are validated as JSON-RPC before being dispatched to listeners.
 * The channel is automatically closed if the extension fires an
 * `icrc94:unexpectedlyClosed` event.
 */
export declare class BrowserExtensionChannel implements Channel {
    #private;
    constructor(options: BrowserExtensionChannelOptions);
    /** Whether this channel has been closed. */
    get closed(): boolean;
    addEventListener(...[event, listener]: [event: 'close', listener: () => void] | [event: 'response', listener: (response: JsonRpcResponse) => void]): () => void;
    /**
     * Sends a JSON-RPC request to the extension via `providerDetail.sendMessage`.
     * The response is validated as JSON-RPC before being dispatched.
     * Non-JSON-RPC responses are silently ignored.
     * @param request - The JSON-RPC request to send to the extension.
     */
    send(request: JsonRpcRequest): Promise<void>;
    /** Dismisses the extension and notifies all close listeners. */
    close(): Promise<void>;
}