Coding standards, frameworks, refactoring, and code review (16.7K skills)
Build game systems in Godot 4 using GDScript patterns for player movement, health, event signals, and scene organization. Use the architectural guidance to plan game state management and performance improvements while learning practical coding conventions.
Build Node.js APIs and backend services with Express/Fastify. The skill guides authentication, database integration, error handling, and operational practices such as logging and health checks, which report whether a service is working.
Build Next.js applications with App Router patterns for page structure, data fetching, caching, and progressive page loading. Covers server and browser component responsibilities, route design, Server Actions, and migration from Pages Router.
Design application and API behavior when operations fail. Choose between exceptions and Result types, which explicitly represent success or failure, and improve retries, error messages, logging, and resource cleanup so failures are easier to handle and investigate.
Plan GDPR data handling for systems processing EU personal data. Review consent, requests from people to access or delete their data, collection limits, retention, encryption, and access controls as part of system design and compliance reviews.
Investigate bugs and slow applications through reproducible examples, logs, environment comparisons, and hypothesis testing. The skill structures root cause analysis and performance measurement, helping developers narrow down failures and verify that a fix works.
Plan and carry out major library and framework upgrades by checking compatibility, identifying changes that require code updates, testing each stage, and preparing rollback steps if an upgrade causes problems.
Helps plan and implement database structure changes and data transformations using Sequelize, TypeORM, or Prisma. Includes staged changes intended to avoid downtime, plus transaction and backup examples for rolling back failed migrations.
Build workflows that generate changelogs and release notes from commits, pull requests, and releases. Use Keep a Changelog formatting, standardize commit messages with Conventional Commits, and manage version numbers through Semantic Versioning rules.
Design reusable TypeScript components and API types with checks at compile time. Use generics, conditional rules, property transformations, and string patterns to derive types from existing definitions and verify how those types behave.
Plan and carry out an AngularJS to Angular migration, from choosing a rewrite strategy to converting components, services, and routes. Includes a hybrid approach that runs both frameworks together while individual features are migrated.
Write and maintain Architecture Decision Records (ADRs), documents explaining important technical choices. Capture the context, options, decision, and consequences, then organize records and track their status so teams can revisit the reasoning.
Set up and maintain a monorepo, a single repository containing multiple apps and packages. Use Turborepo, Nx, and pnpm workspaces to organize shared code, manage dependencies, improve builds, and plan package releases.
Modernize existing React applications through version upgrades and migration from class components to Hooks, functions for state and lifecycle behavior. Includes React 18 rendering APIs, grouped state updates, and features for prioritizing interface updates.
Create and maintain OpenAPI 3.1 specifications from existing code or initial designs. Use these API descriptions to prepare documentation, generate client SDKs—libraries for calling an API—and check whether implementations match their specifications.
Set up and organize an Nx monorepo, a shared repository for multiple applications and libraries. Define dependency boundaries, configure build caching, and use affected commands to focus CI tasks on projects impacted by changes.
Manage complex Git histories with guidance for reorganizing commits, copying selected changes between branches, and finding bug-introducing commits. It also covers working on multiple branches at once and recovering lost commits through Git's reference history.
Structure mobile apps built with React Native and Expo. Covers navigation, state management, device feature integration, offline data synchronization, and performance practices, helping developers organize projects and account for differences between iOS and Android.
Choose and implement ways to manage data in React apps, from values held by individual components to shared data and cached server responses. Covers Redux Toolkit, Zustand, Jotai, and React Query, including migration from legacy Redux.
Build and review C#/.NET APIs and business backends using concrete implementation patterns. Cover asynchronous operations, service dependencies, database access, configuration, caching, and tests to structure application code and examine quality and performance issues.
Improve Bazel builds in large repositories containing multiple projects. Get guidance on build configuration, shared remote caches, remote execution, dependency management, custom build rules, and diagnosing build problems.
Organize features, bug fixes, and refactors as Conductor tracks, units of related work. Create specifications and task plans, maintain status and dependency records, and preserve completed work with verification details and commit references.
Follow Conductor's development plans using test-driven development: write a failing test, implement the change, then improve the code. Manage phase verification, progress updates, and focused git commits as tasks move toward completion.
Design query-ready data from streams of recorded events. The skill guides read models, databases shaped for queries, with practices for replaying events, resuming after failures, and tracking delays in dashboards or search indexes.