/**
 * This function allow to retrieve either a FileBlob or a WebBlob from a URL.
 *
 * From the backend:
 *   - support local files
 *   - support http resources with absolute URLs
 *
 * From the frontend:
 *   - support http resources with absolute or relative URLs
 */
export declare function createBlob(url: URL, opts?: {
    fetch?: typeof fetch;
}): Promise<Blob>;
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