solid

Apply SOLID principles to TypeScript class and interface design.

Updated Mar 9, 2026

Search Tags:#code quality #architecture #refactoring #software design #maintainability #solid principles

Ready to run

npx skills add https://github.com/Bigme2020/skills-collection --skill solid-bigme2020

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: solid
Source: https://github.com/Bigme2020/skills-collection/tree/main/solid
Command: npx skills add https://github.com/Bigme2020/skills-collection --skill solid-bigme2020

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you design software that is flexible, maintainable, and testable by applying the SOLID principles, reducing complexity and improving code quality.

Core Features & Use Cases

Architectural Design: Guides the creation of well-structured classes, modules, and interfaces.
Refactoring: Identifies and helps fix code with too many responsibilities or poor extensibility.
Testability Improvement: Enhances code's ability to be unit tested by reducing coupling.
Use Case: When designing a new feature, use this skill to ensure your classes have single responsibilities, are open for extension but closed for modification, and depend on abstractions rather than concrete implementations.

Quick Start

Apply the SOLID principles to refactor the Order class to improve its maintainability.

Frequently Asked Questions about solid

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I refactor a class with too many responsibilities for better maintainability?▼

To refactor a class with too many responsibilities, apply the Single Responsibility Principle to split it into smaller, focused modules. This reduces coupling and improves code maintainability by ensuring each class has only one reason to change.

What are the SOLID principles in software architecture?▼

SOLID principles in software architecture are five design guidelines—Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion—that help create flexible, maintainable, and testable code by defining boundaries and managing dependencies.

How can I improve code testability by reducing coupling?▼

Improve code testability by reducing coupling through the Dependency Inversion Principle, which shifts dependencies from concrete implementations to abstractions. This allows easier mocking and isolation during unit testing.

Does this approach use TypeScript examples to demonstrate software design patterns?▼

Yes, this approach uses TypeScript examples and detection heuristics to demonstrate software design patterns. It addresses issues in class, module, and interface design to ensure your code is open for extension but closed for modification.

When should I apply the Interface Segregation Principle during software design?▼

Apply the Interface Segregation Principle during software design when clients are forced to depend on methods they do not use. Splitting large interfaces into smaller, specific ones reduces coupling and prevents unintended side effects in your architecture.