/// <reference types="node" />
import type { Gallery, Galleries, Image, ImageName, ImageType, ImageSuffix } from './type';
import type { Duplex } from 'stream';
export declare const URL: {
    BASE: string;
    API: string;
    IMAGE: string;
    THUMB: string;
};
/** @deprecated Use IMAGE_SUFFIX_TYPES record table. Will be removed in v0.3.0 */
export declare const IMAGE_TYPE_TRANSFORM: (input: ImageType | ImageSuffix) => ImageSuffix;
export declare const IMAGE_SUFFIX_TYPES: Record<ImageType | ImageSuffix, ImageSuffix>;
export declare type Options = Partial<{
    timeout: number;
    userAgent: string;
    cookie?: string;
    proxy: {
        host: string;
        port: number;
    };
}>;
export declare class NHentaiAPI {
    private readonly _fetch;
    constructor(opts?: Options);
    private readonly errorHandler;
    fetch(id: number): Promise<Gallery>;
    fetchRelated(id: number): Promise<Gallery[]>;
    fetchAll(page?: number): Promise<Galleries>;
    search(query: string, page?: number): Promise<Galleries>;
    searchByTag(tagId: number, page?: number): Promise<Galleries>;
    stringifyImageUrl(galleryMediaId: Gallery | number, imageName: ImageName, imageSuffix: Image | ImageType | ImageSuffix, isPreview?: boolean): string;
    fetchImage(galleryMediaId: Gallery | number, imageName: ImageName, imageSuffix: Image | ImageType | ImageSuffix, isPreview?: boolean): Promise<{
        data: Duplex;
        headers: any;
    }>;
    fetchImageAsBuffer(galleryMediaId: Gallery | number, imageName: ImageName, imageSuffix: Image | ImageType | ImageSuffix, isPreview?: boolean): Promise<{
        data: Buffer;
        headers: any;
    }>;
}