How to replace the implementation in a third-party component?

Question

Laravel

The project uses the gloudemans/shoppingcart package .
There was a need to expand the functionality and the only option is to expand the base "CartItem" object.
What is the smartest way to change the CartItem implementation?

Answer 1

Fork, do whatever you want, specify a link to your repository in the composer, it will take the package not from the author, but from you.
PROFIT
Example, here is my fork of the package for Laravel https://github.com/Rikcon/recaptcha

"repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/Rikcon/recaptcha"
        }
    ]

Answer 2

You can also do this:
1. Extend the vendor class. Create a class App\CartItem extends Gloudemans\Shoppingcart\CartItem
2. Override the desired method in the generated class.
3. Use your generated/extended class in the right places.