Function loadParsedConfig

src/project-config.ts:222–240

* Load the parsed `codegraph.json` for a project, mtime-cached. A missing or * malformed file yields the zero-config default. One `stat` (and at most one * read/parse) while a single config file is in force, shared across every field.

(rootDir: string)

 * read/parse) while a single config file is in force, shared across every field.
 */
function loadParsedConfig(rootDir: string): ParsedConfig {
  const file = path.join(rootDir, PROJECT_CONFIG_FILENAME);

  let mtimeMs: number;
  try {
    mtimeMs = fs.statSync(file).mtimeMs;
  } catch {
    // No config file — drop any stale cache entry and return the default.
    cache.delete(rootDir);
    return EMPTY_CONFIG;
  }

  const entry = cache.get(rootDir);
  if (entry && entry.mtimeMs === mtimeMs) return entry.config;

  const config = parseConfig(file);
  cache.set(rootDir, { mtimeMs, config });
  return config;
}

/**
 * Load the validated extension overrides for a project, mtime-cached.