result-types

Convert exceptions into Result objects with data and error properties.

35|4|Updated Dec 18, 2024
One-click install
npx skills add https://github.com/wellcrafted-dev/wellcrafted --skill result-types-wellcrafted-dev
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: result-types
Source: https://github.com/wellcrafted-dev/wellcrafted/tree/main/skills/result-types
Command: npx skills add https://github.com/wellcrafted-dev/wellcrafted --skill result-types-wellcrafted-dev

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides a robust way to manage success and failure states in your code, preventing runtime errors and making your application's control flow more predictable and easier to debug.

Core Features & Use Cases

  • Result Type: Represents either a successful value (data) or an error (error) as a plain object, eliminating the need for try-catch blocks in many scenarios.
  • trySync and tryAsync: Safely wrap synchronous and asynchronous operations that might throw errors, converting them into Result types.
  • Use Case: When fetching data from an API, use tryAsync to wrap the fetch call and handle potential network errors or invalid JSON responses gracefully, returning a Result that your calling code can easily check.

Quick Start

Use the result-types skill to wrap a JSON parsing operation that might fail.

Frequently Asked Questions about result-types

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I handle errors in TypeScript without using try-catch blocks?

You can handle errors in TypeScript without try-catch blocks by using a discriminated union Result type. This approach represents success and failure outcomes as plain objects with data and error properties, making your application's control flow more predictable and easier to debug.

What is a Result type in functional programming for async operations?

A Result type in functional programming is a discriminated union that represents either a successful value or an error. For async operations, it converts exceptions into predictable Result objects, allowing you to safely manage success and failure states without throwing exceptions.

How do I safely wrap async API fetch calls that might throw network errors?

To safely wrap async API fetch calls that might throw network errors, use a tryAsync utility. This function wraps the asynchronous operation and converts potential exceptions, such as network failures or invalid JSON responses, into a structured Result object for graceful error handling.

Does this Result type approach work for synchronous JSON parsing operations?

Yes, the Result type approach works for synchronous JSON parsing operations by using a trySync utility. It safely wraps the synchronous synchronous parsing logic and converts any thrown exceptions into a predictable Result object containing either the parsed data or the error.

What is the best way to convert exceptions into predictable objects for control flow?

The best way to convert exceptions into predictable objects for control flow is using a Result type pattern. By wrapping operations in trySync or tryAsync utilities, you transform runtime exceptions into plain objects with data and error properties for easier debugging.