/**
 * In local development environments, we sometimes need to rewrite the
 * CDP upload URL to work with CSP/CORS restrictions.
 * This helper function rewrites localhost URLs to use the sslip.io proxy
 * This is only used when running locally with a development proxy.
 * In non-local environments, this function returns null
 * @param uploadUrl - The original upload URL from CDP
 */
export declare function getProxyUrlForLocalDevelopment(uploadUrl?: string): string | null;