Implement type-safe error handling with tagged errors and exhaustive matching in TypeScript.
npx skills add https://github.com/code-xhyun/disunday --skill errore-code-xhyun
Please help me install this Agent Skill. Skill: errore Source: https://github.com/code-xhyun/disunday/tree/main/errore Command: npx skills add https://github.com/code-xhyun/disunday --skill errore-code-xhyun
This Skill provides a robust, type-safe way to handle errors in TypeScript, eliminating the need for traditional try-catch blocks and promoting a more predictable and maintainable codebase.
Error | Value unions, making error handling explicit and compile-time checked.matchError for compile-time guaranteed handling of all possible error states.NotFoundError, ValidationError, DatabaseError) is explicitly handled by the caller, preventing runtime crashes and improving reliability.Use the errore skill to define a NotFoundError class and handle it when fetching a user.
High-intent search queries and answers about installing and using this skill.
Handling errors as values in TypeScript involves returning Error | Value unions instead of throwing exceptions. This makes error handling explicit and compile-time checked, improving code predictability and eliminating hidden runtime crashes.
Exhaustive matching of custom errors in TypeScript uses a matchError function to guarantee compile-time handling of all possible error states. By defining tagged errors, developers can explicitly address every specific error type before execution.
Creating strongly-typed custom errors in TypeScript uses tagged error classes that support interpolated messages and properties. This approach leverages the type system to attach contextual data to errors, ensuring robust compile-time safety.
The error-as-value approach works effectively for building TypeScript APIs by ensuring that potential errors like NotFoundError or ValidationError are explicitly handled by the caller. This prevents unhandled runtime exceptions and improves overall API reliability.
You should replace try-catch error handling with a Result type pattern when you need type-safe, predictable error management. This pattern forces explicit error extraction and transformation at compile-time, eliminating unpredictable control flow.
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