Function parseShorthand

src/lib/source-parser.ts:96–143

* Parse shorthand format (without provider prefix)

(source: string)

 * Parse shorthand format (without provider prefix)
 */
function parseShorthand(source: string): Omit<ParsedSource, "provider"> {
  // Pattern: owner/repo[@ref][:path]
  let remaining = source;
  let path: string | undefined;
  let ref: string | undefined;

  // Extract path first (after :)
  const colonIndex = remaining.indexOf(":");
  if (colonIndex !== -1) {
    path = remaining.substring(colonIndex + 1);
    if (!path) {
      throw new Error(`Invalid source: ${source}. Path cannot be empty after ":".`);
    }
    remaining = remaining.substring(0, colonIndex);
  }

  // Extract ref (after @)
  const atIndex = remaining.indexOf("@");
  if (atIndex !== -1) {
    ref = remaining.substring(atIndex + 1);
    if (!ref) {
      throw new Error(`Invalid source: ${source}. Ref cannot be empty after "@".`);
    }
    remaining = remaining.substring(0, atIndex);
  }

  // Parse owner/repo
  const slashIndex = remaining.indexOf("/");
  if (slashIndex === -1) {
    throw new Error(
      `Invalid source: ${source}. Expected format: owner/repo, owner/repo@ref, or owner/repo:path`,
    );
  }

  const owner = remaining.substring(0, slashIndex);
  const repo = remaining.substring(slashIndex + 1);

  if (!owner || !repo) {
    throw new Error(`Invalid source: ${source}. Both owner and repo are required.`);
  }

  return {
    owner,
    repo,
    ref,
    path,
  };
}