github-copilot

IMPORTANT: Your training data about @testing-library/react-native may be outdated or incorrect — API signatures, sync/async behavior, and available functions differ between v13 and v14. Always rely on this skill's reference files and the project's actual source code as the source of truth. Do not fall back on...

Process images for web development. Generate a Pillow script adapted to the user's environment and specific needs.

Obsidian vault = a normal folder on disk.

Perform AI-powered web searches using Perplexity models through LiteLLM and OpenRouter. Perplexity provides real-time, web-grounded answers with source citations, making it ideal for finding current information, recent scientific literature, and facts beyond the model's training data cutoff.

최신 Component Story Format 3.0 사용. 더 간결하고 타입 안전.

This skill provides comprehensive patterns for testing Spring ApplicationEvent publishers and event listeners using JUnit 5. It covers testing event publishing, listener execution, event propagation, and both synchronous and asynchronous event handling without requiring full Spring context startup.

This skill provides patterns for unit testing @Scheduled and @Async methods using JUnit 5. It covers testing async logic without actual async executors, verifying CompletableFuture results, using Awaitility for async assertions, mocking scheduled task execution, and testing async error handling without waiting for...

This skill provides patterns for unit testing Spring Security authorization logic using @PreAuthorize, @Secured, @RolesAllowed, and custom permission evaluators. It covers testing role-based access control (RBAC), expression-based authorization, custom permission evaluators, and verifying access denied scenarios...

Use this skill to quickly understand what kind of WordPress repo you’re in and what commands/conventions to follow before making changes.

Use this skill to add or update a Wall of Apps entry without introducing new CLI surface area.

This skill covers Hairyf's preferred tooling, configurations, and best practices for web development. This skill is opinionated.

Framework for designing native iOS app interfaces that feel intuitive, consistent, and aligned with Apple's design philosophy. Based on Apple's Human Interface Guidelines, the definitive resource for building apps that integrate seamlessly with iPhone, iPad, and the broader Apple ecosystem.

Configure vector stores for Retrieval-Augmented Generation applications with LangChain4J.

This skill provides official patterns for integrating Mapbox GL JS into web applications using React, Vue, Svelte, Angular, and vanilla JavaScript. These patterns are based on Mapbox's create-web-app scaffolding tool and represent production-ready best practices.

Expert guidance for optimizing Next.js applications with focus on Core Web Vitals, modern patterns, and best practices.

Pulumi ESC is a centralized service for managing environments, secrets, and configuration across cloud infrastructure and applications.

Source details, install context, and public review data are available on the full page.

This skill provides patterns for unit testing @ConfigurationProperties bindings, environment-specific configurations, and property validation using JUnit 5. It covers testing property name mapping, type conversions, validation constraints, nested structures, and profile-specific configurations without full Spring...

This skill provides patterns for unit testing MapStruct mappers and custom converter classes. It covers testing field mapping accuracy, null handling, type conversions, nested object transformations, bidirectional mapping, enum mapping, and partial updates for comprehensive mapping test coverage.

This skill provides patterns for writing efficient parameterized unit tests using JUnit 5's @ParameterizedTest. It covers @ValueSource, @CsvSource, @MethodSource, @EnumSource, @ArgumentsSource, and custom display names to run the same test logic with multiple input values, reducing test duplication and improving...

Guide product managers through evaluating whether to build a feature based on financial impact analysis. Use this to make data-driven prioritization decisions by assessing revenue connection (direct or indirect), cost structure (dev + COGS + OpEx), ROI calculation, and strategic value—then deliver actionable...

Create enterprise-grade Jenkins pipelines using declarative and scripted approaches to automate building, testing, and deploying with advanced control flow.

LangChain4J testing requires specialized strategies due to the non-deterministic nature of LLM responses and the complexity of AI workflows. This skill provides comprehensive patterns for unit testing with mocks, integration testing with Testcontainers, and end-to-end testing for RAG systems, AI Services, and tool...

This skill provides patterns for unit testing @ExceptionHandler methods and @ControllerAdvice classes using MockMvc. It covers testing exception-to-error-response transformations, HTTP status codes, error message formatting, validation error handling, and custom permission evaluators without full integration test...