Function stripDataUrlContent

packages/core/src/utils/url.ts:282–301

(url: string, includeDataPrefix: boolean = true)

 *          For non-data URLs, returns the original URL unchanged.
 */
export function stripDataUrlContent(url: string, includeDataPrefix: boolean = true): string {
  if (url.startsWith('data:')) {
    // Match the MIME type (everything after 'data:' until the first ';' or ',')
    const match = url.match(/^data:([^;,]+)/);
    const mimeType = match ? match[1] : 'text/plain';
    const isBase64 = url.includes(';base64,');

    // Find where the actual data starts (after the comma)
    const dataStart = url.indexOf(',');
    let dataPrefix = '';
    if (includeDataPrefix && dataStart !== -1) {
      const data = url.slice(dataStart + 1);
      // Include first 10 chars of data to help identify content (e.g., magic bytes)
      dataPrefix = data.length > 10 ? `${data.slice(0, 10)}... [truncated]` : data;
    }

    return `data:${mimeType}${isBase64 ? ',base64' : ''}${dataPrefix ? `,${dataPrefix}` : ''}`;
  }
  return url;
}