pattern-chain-of-responsibility

What problem does it solve?

Many request flows pile sequential checks into monolithic handlers that are hard to reorder, test, or extend, so this skill teaches how to treat each check as a handler that can stop or forward requests dynamically.

Core Features & Use Cases

• Handler interface definition: Establishes the common setNext/handle contracts that every handler implements to stay interchangeable.
• Reusable chain composition: Explains how to link concrete handlers such as authentication, validation, or logging without changing client code.
• Use Case: Apply this pattern in NestJS guard, interceptor, or middleware layers to let each verification step decide to halt processing or delegate to the next handler.

Quick Start

Ask the skill how to assemble a handler chain that validates, authorizes, and logs a request before the core business logic runs.