Decorator Pattern Implementor

Implement the Decorator pattern to attach additional responsibilities to objects dynamically, providing a flexible alternative to subclassing. Use when you need to add behaviors like logging, caching, validation, authentication, compression, or UI embellishments without creating a subclass for every combination. Addresses the subclass explosion problem through transparent enclosure — decorators conform to the component interface so clients cannot distinguish decorated from undecorated objects. Covers composition order effects and the lightweight-decorator optimization. Triggers when: adding optional behaviors to objects at runtime, wrapping streams or middleware, layering cross-cutting concerns, needing to mix and match responsibilities without combinatorial subclass growth.

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Install

Claude CodeClawhHubnpxCursorCodexGemini CLI

1. Add marketplace

› /plugin marketplace add bookforge-ai/bookforge-skills

2. Install plugin

› /plugin install design-patterns-gof@bookforge-skills

3. Use the skill

› /decorator-pattern-implementor

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Source Book

Design Patterns

Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides

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