Access a method in another class located in another file

Server Code
1

I have a method in class A and I want to use it in class B located in another file, structure:

file 1
class A{
  /**
   * @private
   */
  static method1(){
  }
}

file 2
class B{
  /**
 * @description
 * @route POST /Method
 * @param {Person} person
 */
  method2(person){
      A.method1();
  }
 }

I’ve tried using import, but this error occurred Cannot use import statement outside a module

2

Here’s a stackoverflow post for that error, perhaps you will find some useful information there: