返回包含字符串的嵌套数组的最有效方法(JavaScript)

function getStringsInNestedArray(arr) {
  let result = [];
  
  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
      result = result.concat(getStringsInNestedArray(arr[i]));
    } else if (typeof arr[i] === 'string') {
      result.push(arr[i]);
    }
  }
  
  return result;
}

const nestedArray = [1, 'hello', [2, 'world', ['foo', 'bar']], 'baz'];
const stringsArray = getStringsInNestedArray(nestedArray);
console.log(stringsArray);

['hello', 'world', 'foo', 'bar', 'baz']