Like explained in the documentation https://github.com/microsoftgraph/msgraph-sdk-javascript/blob/dev/docs/tasks/LargeFileUploadTask.md , I try to cancel a large file upload with the following:

  const options: OneDriveLargeFileUploadOptions = {
    path: destinationDirectory,
    fileName: stream.name,
    conflictBehavior: 'rename',
    rangeSize: 1024 * 1024
  };

  const fileObject = new FileUpload(
    stream.content,
    stream.name,
    stream.content.size
  );
  
  const task = await OneDriveLargeFileUploadTask.createTaskWithFileObject(
    client,
    fileObject,
    options
  );
  
  await task.upload();
  // when needed:
  task.cancel();

The cancel method generates a DELETE request on the url of the upload session but it returns 404 and the upload continues, and the file is created in my OneDrive directory.