Function traversePath

javascript/0071-simplify-path.js:16–20

(path, stack)

};

const traversePath = (path, stack) => {
    if (canPush(path)) return stack.push(path);

    if (canPop(path, stack)) stack.pop();
};

const canPush = (path) =>
    !(isCurrentDirectory(path) || isParentDirectory(path));