Add file not work correctly

[asmanp2012]

const resumable = new Resumable({
  target: ${`server`},
  query: {},
  testChunks: true,
  withCredentials: true
});

resumable.addFile(item.file);

resumable.addFile gives me this error:

Expected 2 arguments, but got 1.ts(2554)
resumable.d.ts(53, 24): An argument for 'event' was not provided.

what is the event in Add file function?
and how can I use it??