If set to true, will append to a file instead of overwriting previous contents.

Sets the option to allow creating a new file, if one doesn't already exist at the specified path.

If set to true, no file, directory, or symlink is allowed to exist at the target location. When createNew is set to true, create is ignored.

Permissions always applied to file.

An abort signal to allow cancellation of the file write operation.

If the signal becomes aborted the write file operation will be stopped and the promise returned will be rejected with an AbortError.