import { HttpHeaders } from './headers';
export type ResponseType = 'json' | 'text' | 'blob' | 'arraybuffer' | 'none';
export interface OnResponseArgs {
    /** null on a transport-level failure */
    response: Response | null;
    /** 500 on a transport-level failure */
    status: number;
    /** the URL exactly as the caller passed it, before any baseUrl join */
    requestUrl: string;
}
export interface FetchClientOptions {
    baseUrl?: string;
    /** headers that never change for the lifetime of the client */
    staticHeaders?: Record<string, string>;
    /** evaluated per request */
    headers?: () => Record<string, string>;
    /** invoked for every outcome, before any throw */
    onResponse?: (args: OnResponseArgs) => void;
}
export interface FetchRequestOptions {
    method?: string;
    /** merged over the client-wide headers, case-insensitively */
    headers?: HeadersInit;
    params?: Record<string, string | number | boolean>;
    /** JSON-encoded unless it is already a BodyInit */
    body?: unknown;
    responseType?: ResponseType;
    signal?: AbortSignal;
    /** default true; false returns the envelope for non-2xx instead of throwing */
    throwOnError?: boolean;
}
export interface HttpResponse<T = unknown> {
    data: T;
    status: number;
    statusText: string;
    headers: HttpHeaders;
}