import type { ImageData, ImageVariantsMap } from '../types.js';
export type FetchImageOptions = {
    cdnHost?: string;
    signal?: AbortSignal;
    bypassCache?: boolean;
};
export declare const DEFAULT_CDN_HOST = "https://cdn.ing";
export declare function buildPlaceholderImageUrl(mediaId: number, cdnHost?: string): string;
export declare function imageVariantsHaveRenderableSource(variants?: ImageVariantsMap | null): boolean;
export declare function imageDataHasRenderableSource(data: ImageData): boolean;
export declare function fetchImageData(mediaId: number, options?: FetchImageOptions): Promise<ImageData>;