/**
 * This error means we are trying to add users that are parts of 2 backends that are not federating with each other to a new conversation.
 */
export declare class NonFederatingBackendsError extends Error {
    readonly backends: string[];
    constructor(backends: string[]);
}
export declare function isNonFederatingBackendsError(error: unknown): error is NonFederatingBackendsError;
//# sourceMappingURL=FederatedBackendsError.d.ts.map