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Full-stack JavaScript development covering backend (NestJS/Express), frontend (React), deployment (CI/CD), and quality; also covers JavaScript language fundamentals (types, closures, prototypes, async/await, modules, and metaprogramming). MUST load when package.json contains Express, NestJS, or similar backend frameworks. Covers API design, state management, caching, and testing. Also use when working with JavaScript language-level concerns — type coercion, scoping, this binding, Promise patterns, Proxy/Reflect, or iterator protocols. Also covers V8 engine internals (hidden classes, inline caches, string/number repr), event loop model, JS/Node error model, and Express 5 + Drizzle ORM CRUD APIs.
How this skill is triggered — by the user, by Claude, or both
Slash command
/lang:developing-fullstack-javascriptWhen to use
For application logging design and structured logging patterns, use implementing-observability. For TypeScript type system and advanced type patterns, use mastering-typescript. For React data fetching/OpenAPI integration, use developing-react. For DB design/SQL internals/PostgreSQL tuning, use developing-databases.
The summary Claude sees in its skill listing — used to decide when to auto-load this skill
詳細な手順・ガイドラインは `INSTRUCTIONS.md` を参照してください。
INSTRUCTIONS.mdreferences/BACKEND-DRIZZLE-API.mdreferences/BACKEND-STRATEGIES.mdreferences/DEPLOYMENT-STRATEGIES.mdreferences/FRONTEND-STRATEGIES.mdreferences/JS-ADVANCED-PATTERNS.mdreferences/JS-ASYNC-AND-MODULES.mdreferences/JS-ENGINE-INTERNALS.mdreferences/JS-ERROR-MODEL.mdreferences/JS-FUNCTIONS-AND-FP.mdreferences/JS-FUNDAMENTALS.mdreferences/JS-OOP-AND-PROTOTYPES.mdreferences/JS-RUNTIME-MODEL.mdreferences/JS-STDLIB.mdreferences/JS-UNICODE-AND-COERCION.mdreferences/QUALITY-CHECKLIST.md詳細な手順・ガイドラインは INSTRUCTIONS.md を参照してください。
Searches MemPalace before answering questions about past work, people, projects, or prior decisions. Returns verbatim stored content instead of guessing from model memory.
Guides Payload CMS config (payload.config.ts), collections, fields, hooks, access control, APIs. Debugs validation errors, security, relationships, queries, transactions, hook behavior.
Implements vector databases with Pinecone, Weaviate, Qdrant, Milvus, pgvector for semantic search, RAG, recommendations, and similarity systems. Optimizes embeddings, indexing, and hybrid search.
npx claudepluginhub sumik5/sumik-llm-plugin --plugin lang