import * as t from './types';
export declare function isOK(status?: number | string): boolean;
export declare function isObservable(input?: any): boolean;
export declare function fromHttpResponse(res: t.IHttpResponse): {
    toClientResponse<T>(options?: {
        bodyType?: "JSON" | "TEXT" | "BINARY" | undefined;
    }): t.IHttpClientResponse<T>;
};
export declare function toClientResponse<T>(status: number, body: T, options?: {
    bodyType?: t.HttpClientBodyType;
    error?: t.IHttpError;
}): t.IHttpClientResponse<T>;
export declare function toError<T>(status: number, type: t.HttpError | t.FsHttpError, message: string, body?: T): t.IHttpClientResponse<T>;
export declare function isError(data?: any): boolean;