patterns-guide 📘 Design Patterns Guide Give a ⭐️ if this project helped you! Pattern examples in JavaScript Creational Builder [demo] Factory Method [demo] Simple Factory [demo] Singleton [demo] Structural Adapter [demo] Facade [demo] Proxy [demo] Behavioral Mediator [demo] Observer [demo] PubSub [demo] Strategy [demo] Architectural MVC [demo] Others Null Object [demo] License The MIT License @ 2026