electron/spec/fixtures/module/class.js

'use strict';

let value = 'old';

class BaseClass {
  method () {
    return 'method';
  }

  get readonly () {
    return 'readonly';
  }

  get value () {
    return value;
  }

  set value (val) {
    value = val;
  }
}

class DerivedClass extends BaseClass {
}

module.exports = {
  base: new BaseClass(),
  derived: new DerivedClass()
};