Function existsSync

lib/internal/vfs/setup.js:184–189

(path)

    // ==================== Sync path-based read ops ====================

    existsSync(path) {
      const pathStr = toPathStr(path);
      if (pathStr === null) return undefined;
      const r = findVFSForExists(pathStr);
      return r !== null ? r.exists : undefined;
    },
    readFileSync(path, options) {
      if (typeof path === 'number') {
        const vfd = getVirtualFd(path);