Function loadExcludeMatcher

src/extraction/index.ts:320–323

* Matcher for the project's `codegraph.json` `exclude` patterns — paths to keep * OUT of the index even when git-tracked, which `.gitignore` cannot do (#999). * The escape hatch for a committed vendor/theme/SDK directory. Returns `null` * when nothing is excluded (the zero-config default → no ove

(rootDir: string)

 * everywhere). Built once per scan/sync/scope operation from the scan root.
 */
function loadExcludeMatcher(rootDir: string): Ignore | null {
  const patterns = loadExcludePatterns(rootDir);
  return patterns.length > 0 ? ignore().add(patterns) : null;
}

/**
 * `git ls-files --directory` collapses a wholly-untracked/ignored directory into