Cucumberjs如何将world.js拆分成更小的文件

// userWorld.js
module.exports = function () {
  this.World = require('../support/world').World;
  this.user = {
    name: 'John Doe',
    email: 'john.doe@example.com'
  };
};

// productWorld.js
module.exports = function () {
  this.World = require('../support/world').World;
  this.product = {
    name: 'Sample Product',
    price: 100
  };
};

// world.js
var userWorld = require('./userWorld');
var productWorld = require('./productWorld');

module.exports = function () {
  this.World = require('../support/world').World;
  userWorld(this);
  productWorld(this);
};

// features/steps/my_steps.js
module.exports = function () {
  this.Given(/^I have a user$/, function () {
    // 使用 this.user
  });

  this.Given(/^I have a product$/, function () {
    // 使用 this.product
  });
};

// world.js
var userWorld = require('./userWorld');
var productWorld = require('./productWorld');

module.exports = function () {
  this.World = require('../support/world').World;
  userWorld(this);
  productWorld(this);
};