PascalCase-Splitter (Text Processing)

function solve(string){
let destructed = [];
let newWord = '';
let capLetter = '';
for (const letter of string) {
    if(letter === letter.toUpperCase()){
        if (newWord.length === 0){
            capLetter = letter;
            newWord+=capLetter;
        } else{
            destructed.push(newWord);
            newWord = '';
            capLetter = letter;
            newWord += capLetter;

        }

    }else{
        newWord+=letter;
    }
}
destructed.push(newWord);
console.log(destructed.join(', '));

}