Auto Typer for TypingClub

This script types for you automatically on www.typingclub.com:
换行
// ==UserScript==
// @name         Auto Typer for TypingClub
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  This script types for you automatically on www.typingclub.com: 
//                1. Open the website
//                2. Blaze past the tutorials
//                3. Go into a level
//                4. Open Console
//                5. Paste the script and press ENTER
// @match        https://www.typingclub.com/*
// @grant        none
// @license      MIT
// ==/UserScript==

/**
 * NOTE: When delay (in ms between two strokes) is too low, the site might bug out and the result page will not be shown
 */
const minDelay = 60;
const maxDelay = 60;

const keyOverrides = {
  [String.fromCharCode(160)]: ' '    // convert hardspace to normal space
};

function getTargetCharacters() {
  const els = Array.from(document.querySelectorAll('.token span.token_unit'));
  const chrs = els
    .map(el => {
      // get letter to type from each letter DOM element
      if (el.firstChild?.classList?.contains('_enter')) {
        // special case: ENTER
        return '\n';
      }
      let text = el.textContent[0];
      return text;
    })
    .map(c => keyOverrides.hasOwnProperty(c) ? keyOverrides[c] : c); // convert special characters
  return chrs;
}

function recordKey(chr) {
  // send it straight to the internal API
  window.core.record_keydown_time(chr);
}

function sleep(ms) {
  return new Promise(r => setTimeout(r, ms));
}

async function autoPlay(finish) {
  const chrs = getTargetCharacters();
  for (let i = 0; i < chrs.length - (!finish); ++i) {
    const c = chrs[i];
    recordKey(c);
    //console.log(c, c.charCodeAt());
    await sleep(Math.random() * (maxDelay - minDelay) + minDelay);
  }
}

// ############################################################################################################
// go!
// ############################################################################################################

autoPlay(true);