Function parseRefs

src/util/git/git-ref-resolver.js:149–175

(stdout: string)

 */

export const parseRefs = (stdout: string): GitRefs => {
  // store references
  const refs = new Map();

  // line delimited
  const refLines = stdout.split('\n');

  for (const line of refLines) {
    const match = GIT_REF_LINE_REGEXP.exec(line);

    if (match) {
      const [, sha, tagName] = match;

      // As documented in gitrevisions:
      //   https://www.kernel.org/pub/software/scm/git/docs/gitrevisions.html#_specifying_revisions
      // "A suffix ^ followed by an empty brace pair means the object could be a tag,
      //   and dereference the tag recursively until a non-tag object is found."
      // In other words, the hash without ^{} is the hash of the tag,
      //   and the hash with ^{} is the hash of the commit at which the tag was made.
      const name = removeSuffix(tagName, '^{}');

      refs.set(name, sha);
    }
  }

  return refs;
};