import { TotalumApiResponse, TotalumHeaders, ErrorResult } from './interfaces';
export declare class TotalumError extends Error {
    errorCode: string;
    errorMessage: string;
    hasManyErrors?: boolean;
    multipleErrors?: {
        errorCode: string;
        errorMessage: string;
    }[];
    constructor(errorResult: ErrorResult);
    toJSON(): ErrorResult;
}
export declare class FetchClient {
    private baseUrl;
    private headers;
    constructor(baseUrl: string, headers: TotalumHeaders);
    private handleResponse;
    request<T>(endpoint: string, options?: RequestInit): Promise<TotalumApiResponse<T>>;
    get<T>(endpoint: string, params?: Record<string, any>): Promise<TotalumApiResponse<T>>;
    post<T>(endpoint: string, body?: any): Promise<TotalumApiResponse<T>>;
    patch<T>(endpoint: string, body?: any): Promise<TotalumApiResponse<T>>;
    delete<T>(endpoint: string): Promise<TotalumApiResponse<T>>;
    put<T>(endpoint: string, body?: any): Promise<TotalumApiResponse<T>>;
}