import { NetworkRequestItem } from './requestItem';
import { IOnUpdateCallback } from './helper';
export declare class ResponseProxyHandler<T extends Response> implements ProxyHandler<T> {
    resp: Response;
    item: NetworkRequestItem;
    protected onUpdateCallback: IOnUpdateCallback;
    constructor(resp: T, item: NetworkRequestItem, onUpdateCallback: IOnUpdateCallback);
    set(target: T, key: string, value: any): boolean;
    get(target: T, key: string): any;
    protected mockReader(): void;
}
export declare class FetchProxyHandler<T extends typeof fetch> implements ProxyHandler<T> {
    protected onUpdateCallback: IOnUpdateCallback;
    constructor(onUpdateCallback: IOnUpdateCallback);
    apply(target: T, thisArg: typeof window, argsList: any): Promise<Response>;
    protected beforeFetch(item: NetworkRequestItem, input: RequestInfo, init?: RequestInit): void;
    protected afterFetch(item: any): (resp: Response) => Response;
    protected handleResponseBody(resp: Response, item: NetworkRequestItem): Promise<string> | Promise<ArrayBuffer>;
}
export declare class FetchProxy {
    static origFetch: ((input: URL | RequestInfo, init?: RequestInit | undefined) => Promise<Response>) & typeof fetch;
    static create(onUpdateCallback: IOnUpdateCallback): ((input: URL | RequestInfo, init?: RequestInit | undefined) => Promise<Response>) & typeof fetch;
}