Design patterns are solutions to recurring problems, guidelines on how to tackle certain problems. They are not classes, packages or libraries that you can plug into your application and wait for the magic to happen. These are, rather, guidelines on how to tackle certain problems in certain situations.

All examples get from:

Design Patterns For Humans

https://github.com/kamranahmedse/design-patterns-for-humans

Design Patterns in TypeScript

https://github.com/torokmark/design_patterns_in_typescript

DesignPatternsPHP

https://github.com/domnikl/DesignPatternsPHP

Derek Banas - Design Patterns Video Tutorial

https://www.youtube.com/playlist?list=PLF206E906175C7E07

Christopher Okhravi - Design Patterns in Object Oriented Programming

https://www.youtube.com/playlist?list=PLrhzvIcii6GNjpARdnO4ueTUAVR9eMBpc