다트게임 자바스크립트

function solution(dartResult) {
    let roundScore = [];
    
    let regEx = /\d+[SDT][#*]?/g
    let score = dartResult.match(regEx)
    score.forEach((a,i) =>  {
        if(a.includes(10)) {
            if(a.includes('S')) {
                roundScore.push(10) 
            } else if(a.includes('D')) {
                roundScore.push(10 ** 2) 
            } else if(a.includes('T')) {
                roundScore.push(10 ** 3) 
            }
            
        } else {
            if(a.includes('S')) {
                roundScore.push(a[0] ** 1) 
            } else if(a.includes('D')) {
                roundScore.push(a[0] ** 2) 
            } else if(a.includes('T')) {
                roundScore.push(a[0] ** 3) 
            }
    }
        if(a.includes('*')) {
            
            if(roundScore[i-1] === undefined) {
                roundScore[i] *= 2;
            } else {
                roundScore[i-1] *= 2;
                roundScore[i] *= 2;
            }
            
        } else if (a.includes('#')) {
            roundScore[i] *= -1;
        }
    })
        return roundScore.reduce((acc,e) => acc+e,0)
}

모든 경우의 수를 고려하여 수를 대입하여 푸는 방법..
심플하고 깔끔하게 풀려고 몇시간을 고민해봐도 답이 안나와서 화가난다.