code_snippet_6 for "Playing Mortal Kombat with TensorFlow.js. Transfer learning and data augmentation" translation

code_snippet_6.js

await model.fit(xs, ys, {
  epochs: Epochs,
  batchSize: parseInt(((punches.length + others.length) * BatchSize).toFixed(0)),
  callbacks: {
    onBatchEnd: async (_, logs) => {
      console.log('Cost: %s, accuracy: %s', logs.loss.toFixed(5), logs.acc.toFixed(5));
      await tf.nextFrame();
    }
  }
});