declare global {
    interface PluginRegistry {
        HeartlandForm?: HeartlandFormPlugin;
    }
}
export interface HeartlandFormPlugin {
    echo(options: {
        value: string;
    }): Promise<{
        value: string;
    }>;
    open(options: {
        heartlandPublicKey: string;
    }): Promise<{
        heartlandPublicKey: string;
    }>;
}