liskov-substitution-principle

What problem does it solve?

This Skill helps engineers ensure that subclasses can replace parent types without altering program behavior, preventing Liskov Substitution Principle violations.

Core Features & Use Cases

• Contract-aware inheritance: Guides when to use inheritance or switch to interfaces and composition.
• Override discipline: Flags throwing or no-op overrides that break substitutability.
• Design best practices: Recommends separating capabilities via interfaces to maintain correct behavior across hierarchies.
• Use Case: When refactoring a class hierarchy, apply this skill to validate that all subclasses uphold the parent's contracts and invariants.

Quick Start

Review your current class hierarchy to ensure all overrides preserve contracts and avoid throwing exceptions.