Function resolveLocalPath

src/path.ts:44–50

(source: string, target: string)

 * hashes (e.g., #foo) as non-local paths and likewise returns null.
 */
export function resolveLocalPath(source: string, target: string): string | null {
  if (/^\w+:/.test(target)) return null; // URL
  if (target.startsWith("#")) return null; // anchor tag
  const path = resolvePath(source, target);
  if (path.startsWith("../")) return null; // goes above root
  return path;
}

/**
 * Returns true if the specified specifier refers to a local path, as opposed to