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Found 1,256 Skills
A practical, jargon-free guide to fp-ts functional programming - the 80/20 approach that gets results without the academic overhead. Use when writing TypeScript with fp-ts library.
Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code. Use when implementing error handling patterns with fp-ts.
ArkType runtime validation with TypeScript-native syntax. Type-safe schemas using string expressions, morphs, scopes, and generics. Use when defining schemas, validating data, transforming input, or building type-safe APIs with ArkType.
Must always be enabled when writing/reviewing TypeScript code.
Effect-TS (Effect) guidance for TypeScript. Use when building, refactoring, reviewing, or explaining Effect code, especially for: typed error modeling (expected errors vs defects), Context/Layer/Effect.Service dependency wiring, Scope/resource lifecycles, runtime execution boundaries, schema-based decoding, concurrency/scheduling/streams, @effect/platform APIs, Effect AI workflows, and Promise/async migration.
Apply production-ready Instantly SDK patterns for TypeScript and Python. Use when implementing Instantly integrations, refactoring SDK usage, or establishing team coding standards for Instantly. Trigger with phrases like "instantly SDK patterns", "instantly best practices", "instantly code patterns", "idiomatic instantly".
Enforces the CodeBelt TypeScript and React code style guide for project structure, naming conventions, component patterns, service patterns, testing, and TypeScript rules. Use when writing, reviewing, or refactoring TypeScript or React code, creating new files or components, organizing project directories, writing tests, defining Zod schemas, or when the user mentions code style, conventions, linting, file organization, or naming patterns.
TypeScript strict patterns and best practices. Trigger: When writing TypeScript code - types, interfaces, generics.
Provides comprehensive code review capability for React applications, validates component architecture, hooks usage, React 19 patterns, state management, performance optimization, accessibility compliance, and TypeScript integration. Use when reviewing React code changes, before merging pull requests, after implementing new features, or for component architecture validation. Triggers on "review React code", "React code review", "check my React components".
Guide for strict TypeScript practices including avoiding any, using proper type annotations, and leveraging TypeScript's type system effectively. Use when working with TypeScript codebases that enforce strict type checking, when you need guidance on type safety patterns, or when encountering type errors. Activates for TypeScript type errors, strict mode violations, or general TypeScript best practices.
Use when building or maintaining Electrobun desktop apps in TypeScript, including electrobun.config.ts, electrobun/bun or electrobun/view imports, BrowserWindow/BrowserView usage, updater flows, and distribution artifacts.
Write secure-by-default Node.js and TypeScript applications following security best practices. Use when: (1) Writing new Node.js/TypeScript code, (2) Creating API endpoints or middleware, (3) Handling user input or form data, (4) Implementing authentication or authorization, (5) Working with secrets or environment variables, (6) Setting up project configurations (tsconfig, eslint), (7) User mentions security concerns, (8) Reviewing code for vulnerabilities, (9) Working with file paths or child processes, (10) Setting up HTTP headers or CORS.