fs.unwatchFile(filename[, listener])

• filename <string> | <Buffer> | <URL>

• listener <Function> 可选，先前使用 fs.watchFile() 附加的监听器。

  ¥listener <Function> Optional, a listener previously attached using fs.watchFile()

停止监视 filename 的变化。如果指定了 listener，则仅删除该特定监听器。否则，所有监听器都将被删除，从而有效地停止对 filename 的监视。

¥Stop watching for changes on filename. If listener is specified, only that particular listener is removed. Otherwise, all listeners are removed, effectively stopping watching of filename.

使用未被监视的文件名调用 fs.unwatchFile() 是空操作，而不是错误。

¥Calling fs.unwatchFile() with a filename that is not being watched is a no-op, not an error.

使用 fs.watch() 比 fs.watchFile() 和 fs.unwatchFile() 更高效。应尽可能使用 fs.watch() 而不是 fs.watchFile() 和 fs.unwatchFile()。

¥Using fs.watch() is more efficient than fs.watchFile() and fs.unwatchFile(). fs.watch() should be used instead of fs.watchFile() and fs.unwatchFile() when possible.