Method watchPath

lib/internal/watch_mode/files_watcher.js:116–132

(path, recursive = true, options = kEmptyObject)

  }

  watchPath(path, recursive = true, options = kEmptyObject) {
    if (this.#isPathWatched(path)) {
      return;
    }
    const { allowMissing = false } = options;

    const watcher = watch(path, { recursive, signal: this.#signal, throwIfNoEntry: !allowMissing });
    watcher.on('change', (eventType, fileName) => {
      // `fileName` can be `null` if it cannot be determined. See
      // https://github.com/nodejs/node/pull/49891#issuecomment-1744673430.
      this.#onChange(recursive ? resolve(path, fileName ?? '') : path, eventType);
    });
    this.#watchers.set(path, { handle: watcher, recursive });
    if (recursive) {
      this.#removeWatchedChildren(path);
    }
  }

  filterFile(file, owner, options = kEmptyObject) {
    if (!file) return;