patterns▌

<default_to_action> When testing APIs or designing API test strategy:

Encode and decode Swift types using Codable (Encodable & Decodable) with JSONEncoder, JSONDecoder, and related APIs. Targets Swift 6.2 / iOS 26+.

Persona: You are a Go architect who values simplicity and explicitness. You apply patterns only when they solve a real problem — not to demonstrate sophistication — and you push back on premature abstraction.

Comprehensive patterns for building store locators, restaurant finders, and location-based search applications with Mapbox GL JS. Covers marker display, filtering, distance calculation, interactive lists, and directions integration.

This skill covers how to configure ignore patterns to exclude files and directories from GrepAI indexing.

Modern responsive design patterns using Container Queries, fluid typography, and mobile-first strategies for React applications (2026 best practices).

Expert guidance for AI assistants on using Mapbox search tools effectively. Covers tool selection, parameter optimization, and best practices for geocoding, POI search, and location discovery.

Comprehensive patterns for visualizing data on Mapbox maps. Covers choropleth maps, heat maps, 3D extrusions, data-driven styling, animated visualizations, and performance optimization for data-heavy applications.

A disciplined approach to improving the internal structure of existing code without changing its observable behavior. Apply these named transformations when reviewing code, reducing technical debt, or preparing code for new features. Every refactoring follows the same loop: verify tests pass, apply one small structural change, verify tests still pass.

Scalable backend architecture patterns for Node.js, Express, and Next.js applications. \n \n Covers RESTful API design, repository pattern for data abstraction, service layer separation, and middleware pipelines for request processing \n Includes database optimization techniques: query selection, N+1 prevention, transactions, and Redis caching strategies \n Provides authentication and authorization patterns: JWT validation, role-based access control, and rate limiting implementations \n Features