Max Level PHPStan

Improving code quality requires pushing boundaries. This month, while working on the Spacetraders quick start tasks, I pushed PHPStan to its limits. Each progressively stricter static analysis level had some challenges hand-in-hand with clear benefits. What's the goal? I want to leave behind the "safe" comfort of level 5 and take it to the newly added level 10. Along the way, I learned the nuances of type-hinting arrays, handling generics, and dealing with mixed types. Read on to see what I learned and how you can use it in your own projects.