How does co-location improve code maintenance?

By keeping types near their implementation (e.g., within the service or component folder), it creates clear ownership, simplifies refactoring, and prevents unclear cross-domain dependencies.

Why does this skill prefer types over interfaces?

Using 'type' exclusively provides a single, consistent way to define data structures, reducing decision fatigue and ensuring compatibility with specific TypeScript 5.5+ features.

Does this skill support the latest TypeScript features?

Yes, it specifically includes guidelines for leveraging TypeScript 5.5's automatic type predicate inference in filter callbacks to remove unnecessary manual assertions.

What is the recommended pattern for Arktype optional properties?

The skill mandates using the 'key?' syntax instead of '| undefined' unions to ensure schemas convert correctly to JSON Schema for OpenAPI and MCP tool integrations.

TypeScript Development Standards

Name: TypeScript Development Standards
Author: EpicenterHQ

byEpicenterHQ

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3,817

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Developer Tools

Enforces consistent TypeScript coding standards, co-location principles, and Arktype schema patterns for cleaner, maintainable codebases.

The TypeScript Development Standards skill provides a comprehensive set of guidelines designed to improve code clarity and maintainability in modern TypeScript projects. It enforces the use of types over interfaces, advocates for type co-location to prevent disorganized utility files, and standardizes constant naming conventions for UI components. Additionally, it optimizes Arktype schemas for JSON Schema compatibility and promotes efficient parameter destructuring. This skill is ideal for developers using TypeScript 5.5+ who want to automate structural decisions and ensure their code follows industry-leading patterns for performance and scalability.

Key Features

013,817 GitHub stars

02Provides strict type co-location rules to eliminate global type buckets

03Optimizes Arktype schemas for seamless JSON Schema and OpenAPI conversion

04Standardizes constant array naming patterns for UI options and validation

05Promotes parameter destructuring in factory functions for cleaner API boundaries

06Enforces 'type' declarations over interfaces for architectural consistency

Use Cases

01Configuring Arktype schemas to work correctly with MCP tools or OpenAPI documentation

02Standardizing naming conventions for dropdown options and metadata arrays across a team

03Refactoring monolithic type files into organized, co-located service modules

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add epicenterhq/epicenter typescript

For use in Claude.ai and ChatGPT

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