stats.mtimeNs#>>>>>

• 类型：<bigint>

仅在将 bigint: true 传递给生成对象的方法时存在。 表示此文件上次修改时间的时间戳，以自 POSIX 纪元以来的纳秒为单位。

🌐 Only present when bigint: true is passed into the method that generates the object. The timestamp indicating the last time this file was modified expressed in nanoseconds since the POSIX Epoch.