Is this skill suitable for building REST APIs?

Yes, it includes specialized patterns for mapping internal Go errors to HTTP status codes and structured JSON response bodies.

Does it provide patterns for testing error conditions?

Absolutely. It includes comprehensive templates for unit testing error paths, ensuring that failure conditions are as well-tested as the happy path.

When should I use custom error types vs sentinel errors?

The skill provides guidance on using sentinel errors for simple state checks and custom types when you need to provide additional dynamic metadata about the failure.

Does this skill support the pkg/errors legacy pattern?

While it prioritizes the standard library's modern features, it includes patterns for stack trace handling similar to the legacy pkg/errors package for comprehensive debugging.

How does this skill handle error wrapping in Go?

The skill implements Go 1.13+ standards, utilizing fmt.Errorf with the %w verb for wrapping and the errors package for type-safe unwrapping and checking.

Go Error Handling Mastery

Name: Go Error Handling Mastery
Author: TheBushidoCollective

byTheBushidoCollective

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API開発

Implements robust Go error handling patterns including error wrapping, sentinel errors, and custom types for resilient applications.

概要

This skill empowers developers to master Go's idiomatic error handling ecosystem, moving beyond simple checks to professional patterns like error wrapping with context, custom error type assertions, and structured multi-error management. It provides a comprehensive framework for building robust, observable Go applications by ensuring errors are enriched with context and handled according to modern Go 1.13+ standards and industry best practices, making it essential for backend engineers and system architects.

主な機能

Structured multi-error collection for complex validation logic
Implementation of custom error types and sentinel error patterns
Standardized HTTP-specific error handling for API development
39 GitHub stars
Advanced error wrapping and unwrapping using Go 1.13+ standards
Type-safe error assertions using errors.Is and errors.As

ユースケース

Refactoring legacy codebases to use idiomatic Go 1.13+ error wrapping
Standardizing error responses across Go microservices architectures
Implementing domain-specific validation and retry logic based on error types

概要

主な機能

Structured multi-error collection for complex validation logic
Implementation of custom error types and sentinel error patterns
Standardized HTTP-specific error handling for API development
39 GitHub stars
Advanced error wrapping and unwrapping using Go 1.13+ standards
Type-safe error assertions using errors.Is and errors.As

ユースケース

Refactoring legacy codebases to use idiomatic Go 1.13+ error wrapping
Standardizing error responses across Go microservices architectures
Implementing domain-specific validation and retry logic based on error types