Factory & Constructor Functions

What potential issue exists in this composite factory pattern?

const createComposite = (components) => {
  return {
    render() {
      return components.map(c => c.render());
    },
    update(data) {
      components.forEach(c => c.update(data));
    }
  };
};

const component = createComposite([
  createButton('Click me'),
  createInput('Enter text')
]);

Components array can be modified externally
The components array is directly used in the composite's methods, making it vulnerable to external modification since arrays are passed by reference. A malicious or careless consumer could modify the components array after creation, breaking the composite's functionality. To fix this, either clone the array during creation (const safeComponents = [...components]) or make methods that modify the component list rather than exposing the array directly.
The render method is inefficient
Update method should return a value
There are no issues

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