fs.truncateSync(path[, len])

• path <string> | <Buffer> | <URL>

• len <integer> 默认值：0

  ¥len <integer> Default: 0

截断文件。返回 undefined。文件描述符也可以作为第一个参数传入。在这种情况下，fs.ftruncateSync() 被调用。

¥Truncates the file. Returns undefined. A file descriptor can also be passed as the first argument. In this case, fs.ftruncateSync() is called.

不推荐传入文件描述符，并且可能会导致将来抛出错误。

¥Passing a file descriptor is deprecated and may result in an error being thrown in the future.