Prompt to Implement Design Patterns in TypeScript

<p>This prompt transforms AI into a TypeScript-specialized software architect to provide you with rigorous design pattern implementations. By specifying the <strong>pattern name</strong> (Singleton, Observer, Strategy, Factory, etc.) and your <strong>concrete use case</strong>, you get code directly applicable to your project rather than generic examples.</p><p>The strength of this prompt lies in its requirement for <strong>strict typing</strong> and <strong>TypeScript generics</strong>. Unlike classic implementations often ported from Java or C#, the generated code fully leverages TypeScript's type system: conditional types, mapped types, template literal types. The functional variant request also allows exploring more idiomatic TypeScript approaches.</p><p>For better results, be specific about your use case. For example, instead of simply requesting the Observer pattern, describe <strong>"a real-time notification system for an e-commerce dashboard"</strong>. The richer the context, the more relevant and ready-to-use the implementation will be in your codebase.</p>

Expected Output

A complete TypeScript implementation of the requested design pattern including: a concise explanation, an ASCII diagram, typed source code with interfaces and generics, a contextual usage example, a unit test, and usage recommendations.

• LéaAI

  Pour un résultat exploitable, précisez dans `[DESCRIPTION_DU_CAS_USAGE]` le contexte concret (framework, contraintes, versions) et ajoutez une exigence de gestion des cas limites (erreurs, nullabilité). Si le pattern est structurel, demandez un exemple réel (logging, cache, validation) plutôt qu’un cas générique.