import { GetJsonError } from '../common';
import type { Metadata } from '../types';
type MetadataResponse = Awaited<ReturnType<typeof getMetadata>>;
interface GetMetadataProps {
    fallbackPackageUrl?: string;
    mainPackageUrl: string;
    onRequestError?: (error: GetJsonError) => void;
    signal?: AbortSignal;
    retries?: number;
}
declare function getMetadata(props: GetMetadataProps): Promise<{
    data: Metadata;
    headers: Headers;
    url: string;
}>;
export declare function getCachedMetadata(props: GetMetadataProps & {
    cache: boolean | number;
}): Promise<MetadataResponse & {
    cacheHit?: boolean;
}>;
export {};
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