export interface DownloadedGithubImage {
    readonly bytes: Buffer;
    readonly extension: 'png' | 'jpg' | 'gif' | 'webp';
}
export declare function isGithubImageAttachmentUrl(value: string): boolean;
export declare function downloadGithubImage(url: string, cwd: string): Promise<DownloadedGithubImage>;
//# sourceMappingURL=image-download.d.ts.map