Function getRelativeUrlPath

src/hooks/urlLoaderPolicy.ts:150–174

(rootUrl: URL, targetUrl: URL)

}

function getRelativeUrlPath(rootUrl: URL, targetUrl: URL): string | null {
  if (targetUrl.origin !== rootUrl.origin) {
    return null;
  }

  const rootPath = ensureTrailingSlash(rootUrl.pathname);
  if (!targetUrl.pathname.startsWith(rootPath)) {
    return null;
  }

  const relativePath = targetUrl.pathname.slice(rootPath.length);
  if (!relativePath) {
    return null;
  }

  // URL.pathname keeps segments percent-encoded; decode them so the stored
  // relative path matches the decoded form HuggingFace paths use. Callers
  // re-encode exactly once (encodeUrlPath/joinManifestUrlPath); leaving it
  // encoded here would double-encode tiles with '#'/spaces (e.g. 5x5#-5.ply)
  // and 404 the fetch.
  return normalizePath(relativePath)
    .split('/')
    .map(decodePathSegment)
    .join('/');
}

function shouldSkipDirectoryHref(href: string): boolean {
  const lower = href.trim().toLowerCase();