Does it support asynchronous code?

Yes, it specifically handles migrating Promises and async/await blocks to Result.tryPromise and uses generator-based composition to keep async code flat and readable.

How does it handle different types of errors?

The skill categorizes errors into Domain errors (using TaggedError), Infrastructure errors (using tryPromise), and Bugs/Defects (which are allowed to throw as Panics), providing a clear path for each.

What is the better-result-adopt skill?

It is a specialized Claude Code skill designed to help developers migrate from traditional try/catch error handling to a type-safe Result-based pattern using the better-result library.

Can I use it to migrate a large existing codebase incrementally?

Absolutely. The skill follows a strategy of starting at I/O boundaries and working inward, allowing you to adopt Result types without needing a full-codebase refactor all at once.

What are TaggedErrors in this context?

TaggedErrors are custom classes that the skill implements to provide a standardized way to define, catch, and match specific domain errors with full type safety.

Better Result Migration

Name: Better Result Migration
Author: davis7dotsh

bydavis7dotsh

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843

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開発者ツール

Migrates existing error handling patterns to type-safe, railway-oriented Result types using the better-result library.

This skill automates and guides the transition from imperative error handling, such as try/catch blocks and Promise rejections, to functional, type-safe patterns. It identifies I/O boundaries, categorizes errors into domain or infrastructure types, and implements TaggedErrors to ensure exhaustive error handling. By leveraging generator composition and Result chains, it helps developers build more resilient applications with predictable error states, improved type inference, and cleaner code architecture.

主な機能

01Converts try/catch blocks into structured Result.try patterns

02Implements TaggedError classes for robust domain error categorization

03Refactors complex callback chains into clean, readable generator-based compositions

04843 GitHub stars

05Migrates async Promise-based logic to Result.tryPromise for safer I/O

06Updates function signatures to reflect explicit, typed error return values

ユースケース

01Implementing railway-oriented programming in a TypeScript backend

02Standardizing error handling at API, database, and file system boundaries

03Refactoring a legacy codebase from throwing exceptions to typed errors

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add davis7dotsh/better-context better-result-adopt

For use in Claude.ai and ChatGPT

Download Skill