method promises.FileHandle.appendFile
#FileHandle.appendFile(data: string | Uint8Array,options?: ,): Promise<void>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().
Parameters #
Return Type #
Promise<void> Fulfills with undefined upon success.