JavaScript -正则表达式删除括号内的空格，单引号内的空格除外

function removeSpaces(str) {
  // 匹配括号内的空格
  const regex = /\((.*?)\)/g;
  str = str.replace(regex, (match, p1) => {
    // 保留单引号内的空格
    const innerRegex = /'(.*?)'/g;
    p1 = p1.replace(innerRegex, (match, p2) => {
      return match.replace(/\s/g, '');
    });
    return `(${p1})`;
  });

  return str;
}

const input = "Hello ( world ) , ' JavaScript is ( a flexible language ) '";
const result = removeSpaces(input);
console.log(result);  // 输出: Hello (world), ' JavaScript is (a flexible language) '