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Practical async patterns in TypeScript with fp-ts TaskEither for clean pipelines, replacing nested try/catch. Includes real fetch, Prisma, and file API examples.

This skill provides functional programming patterns for building type-safe and testable backend services using fp-ts in Node.js or Deno environments. It covers dependency injection, service composition, and handling typed backend errors with ReaderTaskEither. Ideal for developers implementing functional architecture principles in modern JavaScript runtimes to ensure robust and maintainable server-side applications.

A quick reference guide for the fp-ts Either type in TypeScript. It covers error handling, validation, and operations that can fail with typed errors. Includes examples for creating, transforming, and extracting values, as well as common patterns like chaining validations and converting throwing code.

This skill teaches you to handle errors in TypeScript without relying on try/catch blocks. Instead, it uses functional programming concepts like Either and TaskEither from the fp-ts library. You will learn to treat errors as values, making your code more predictable and maintainable. It covers validation patterns and practical error contracts suitable for real-world applications.

This skill provides a quick reference for TaskEither in fp-ts, a functional programming library for TypeScript. It covers async error handling, API calls, and Promise-based operations that can fail. Learn how to create, transform, and execute TaskEither values using operators like map, flatMap, and tryCatch. Includes common patterns for chaining async calls and handling errors with typed errors.

This skill teaches you how to handle errors in TypeScript without relying on try/catch blocks. It focuses on using fp-ts Either and TaskEither types to make error handling more predictable and type-safe. Ideal for building APIs, services, and accumulating validation errors. It promotes treating errors as data values rather than exceptions, ensuring cleaner and more maintainable code.

This skill provides a quick reference for fp-ts types in TypeScript. It helps users decide between Option, Either, Task, and TaskEither types based on whether operations are async or involve errors. It includes common imports, one-line patterns for wrapping nullable values, and pattern matching examples. Ideal for developers needing type selection guidance or import statements for functional programming tasks.

This skill systematically audits a given project by analyzing its historical memory, rollout summaries, and local skill definitions. It identifies repeated complex workflows, recurring operational patterns, or areas where existing skills are stale. The audit process guides the user to recommend the highest-value skills to either add (if a new pattern emerges) or update (if current skills are outdated or incomplete), ensuring the AI agent operates with the most accurate and context-specific knowledge base for optimal project execution.