Method #watchFolder

lib/internal/fs/recursive_watch.js:121–167

(folder)

  }

  #watchFolder(folder) {
    const { readdirSync } = lazyLoadFsSync();

    try {
      const files = readdirSync(folder, {
        withFileTypes: true,
      });

      for (const file of files) {
        if (this.#closed) {
          break;
        }

        const f = pathJoin(folder, file.name);
        const relativePath = pathRelative(this.#rootPath, f);

        // Skip watching ignored paths entirely to avoid kernel resource pressure
        if (this.#ignoreMatcher?.(relativePath)) {
          continue;
        }

        if (!this.#files.has(f)) {
          this.emit('change', 'rename', relativePath);

          if (file.isSymbolicLink()) {
            this.#symbolicFiles.add(f);
          }

          try {
            this.#watchFile(f);
            if (file.isDirectory() && !file.isSymbolicLink()) {
              this.#watchFolder(f);
            }
          } catch (err) {
            // Ignore ENOENT
            if (err.code !== 'ENOENT') {
              throw err;
            }
          }
        }
      }
    } catch (error) {
      if (error.code !== 'ENOENT') {
        this.emit('error', error);
      }
    }
  }

  #watchFile(file) {
    if (this.#closed) {