[익스프레션] 한글 타이핑 자막 효과 개선

let cCho = ["ㄱ", "ㄲ", "ㄴ", "ㄷ", "ㄸ", "ㄹ", "ㅁ", "ㅂ", "ㅃ", "ㅅ", "ㅆ", "ㅇ", "ㅈ", "ㅉ", "ㅊ", "ㅋ", "ㅌ", "ㅍ", "ㅎ"], 
cJung = ["ㅏ", "ㅐ", "ㅑ", "ㅒ", "ㅓ", "ㅔ", "ㅕ", "ㅖ", "ㅗ", "ㅘ", "ㅙ", "ㅚ", "ㅛ", "ㅜ", "ㅝ", "ㅞ", "ㅟ", "ㅠ", "ㅡ", "ㅢ", "ㅣ"],  
cJong = ["", "ㄱ", "ㄲ", "ㄳ", "ㄴ", "ㄵ", "ㄶ", "ㄷ", "ㄹ", "ㄺ", "ㄻ", "ㄼ", "ㄽ", "ㄾ", "ㄿ", "ㅀ", "ㅁ", "ㅂ", "ㅄ", "ㅅ", "ㅆ", "ㅇ", "ㅈ", "ㅊ", "ㅋ", "ㅌ", "ㅍ", "ㅎ"]
let toStringFromCharCode = (cho, jung, jong) =>
  String.fromCharCode(44032 + cho * 588 + jung * 28 + (jong || 0));
let seperateChar = (char) => {
  let cCode = char.charCodeAt() - 0xac00;
  let jong = cCode % 28;
  let jung = ((cCode - jong) / 28) % 21;
  let cho = ((cCode - jong) / 28 - jung) / 21;
  return []
    .concat(cCho[cho])
    .concat(toStringFromCharCode(cho, jung))
    .concat(cJong[jong] !== "" ? toStringFromCharCode(cho, jung, jong) : []);
};

let toKorChars = (char) => {
  let cCode = char.charCodeAt();
  return [].concat(
    (!cCode && []) ||
      (cCode === 32 && " ") ||
      ((cCode < 0xac00 || cCode > 0xd7a3) && char) ||
      seperateChar(char)
  );
};

let typing = (str) =>
  str
    .split("")
    .map((char) => toKorChars(char))
    .reduce(
      (pre, cur) =>
        pre.concat(
          cur.map((v) => (pre.length !== 0 ? pre[pre.length - 1] : "") + v)
        ),
      [""]
    );

let p = thisLayer.effect("Speed")("Slider");
let strList = typing(thisLayer.text.sourceText);

if (time > 2) {
	let adjustedTime = time - 2;
	let strListIndex = Math.round(adjustedTime*p);
	[strList[strList.length > strListIndex ? strListIndex : strList.length-1]]
} else {
	[]
}

//------------초성, 중성 종성 글자 수 세기--------------
/*let countCharComponents = (str) => {
  return str.split("").reduce((count, char) => {
    let components = toKorChars(char);
    return count + components.length;
  }, 0);
};

[countCharComponents(thisLayer.text.sourceText)]*/
//------------초성, 중성 종성 글자 수 세기--------------