code_snippet_11 for "Playing Mortal Kombat with TensorFlow.js. Transfer learning and data augmentation" translation

code_snippet_11.js

const punches = require('fs')
  .readdirSync(Punches)
  .filter(f => f.endsWith('.jpg'))
  .map(f => `${Punches}/${f}`);
const kicks = require('fs')
  .readdirSync(Kicks)
  .filter(f => f.endsWith('.jpg'))
  .map(f => `${Kicks}/${f}`);
const others = require('fs')
  .readdirSync(Others)
  .filter(f => f.endsWith('.jpg'))
  .map(f => `${Others}/${f}`);
const ys = tf.tensor2d(
  new Array(punches.length)
    .fill([1, 0, 0])
    .concat(new Array(kicks.length).fill([0, 1, 0]))
    .concat(new Array(others.length).fill([0, 0, 1])),
  [punches.length + kicks.length + others.length, 3]
);
const xs: tf.Tensor2D = tf.stack(
  punches
    .map((path: string) => mobileNet(readInput(path)))
    .concat(kicks.map((path: string) => mobileNet(readInput(path))))
    .concat(others.map((path: string) => mobileNet(readInput(path))))
) as tf.Tensor2D;