import { Connection } from "./core/connection";
import { Platform } from "./core/types";
interface ConnectionManagerOpenParams {
    heightPx?: number;
    nonce?: string;
    url: string | Promise<string>;
    widthPx?: number;
}
export declare class ConnectionManager {
    private readonly platform;
    private connection;
    private popupWindow;
    private connectionUpdatedCallback?;
    private nonce?;
    private readonly handleMessage;
    constructor(platform: Platform);
    initialize(): this;
    tearDown(): this;
    open({ url, widthPx, heightPx, nonce, }: ConnectionManagerOpenParams): Promise<void>;
    close(): void;
    onConnectionUpdated(callback: (connection: Connection | null) => void): this;
    getConnection(): Connection | null;
    private setUrl;
    private resetConnectionAndPopupWindow;
    private resetConnection;
    private verifyAndResetNonce;
}
export {};
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