filehandle.appendFile(data[, options])

• data <string> | <Buffer> | <TypedArray> | <DataView> | <AsyncIterable> | <Iterable> | <Stream>
• options <Object> | <string>
  • encoding <string> | <null> 默认值: 'utf8'
• 返回: <Promise> 成功时将使用 undefined 履行。

filehandle.writeFile() 的别名。

当在文件句柄上进行操作时，则无法将模式更改为使用 fsPromises.open() 设置的模式。 因此，这相当于 filehandle.writeFile()。

• data <string> | <Buffer> | <TypedArray> | <DataView> | <AsyncIterable> | <Iterable> | <Stream>
• options <Object> | <string>
  • encoding <string> | <null> Default: 'utf8'
• Returns: <Promise> Fulfills with undefined upon success.

Alias of filehandle.writeFile().

When operating on file handles, the mode cannot be changed from what it was set to with fsPromises.open(). Therefore, this is equivalent to filehandle.writeFile().