> swift-error-handling
Standards for Throwing Functions, Result Type, and Never. Use when implementing Swift error throwing, Result<T,E>, or designing error hierarchies. (triggers: **/*.swift, throws, try, catch, Result, Error)
curl "https://skillshub.wtf/HoangNguyen0403/agent-skills-standard/swift-error-handling?format=md"Swift Error Handling
Priority: P0
Implementation Guidelines
Throwing Functions
- Propagate Errors: Use
throwsfor recoverable errors. - Do-Catch: Handle errors close to source with specific catch blocks.
- Error Types: Define custom errors as enums conforming to
Error.
Result Type
- Async Alternatives: Use
Result<Success, Failure>for callback-based APIs. - Transformations: Use
.map(),.flatMap()for functional composition. - Conversion: Use
.get()to convertResultto throwing.
Never Type
- Fatalisms: Use
Neverreturn type for functions that never return. - Preconditions:
fatalError(),preconditionFailure()for programmer errors.
Anti-Patterns
- Force Try:
**No try!**: Use try? or do-catch. - Silent Failures:
**No try? without nil check**: Handle or log. - String Errors:
**No Error(message)**: Use typed errors.
References
> related_skills --same-repo
> typescript-tooling
Development tools, linting, and build config for TypeScript. Use when configuring ESLint, Prettier, Jest, Vitest, tsconfig, or any TS build tooling. (triggers: tsconfig.json, .eslintrc.*, jest.config.*, package.json, eslint, prettier, jest, vitest, build, compile, lint)
> typescript-security
Secure coding practices for TypeScript. Use when validating input, handling auth tokens, sanitizing data, or managing secrets and sensitive configuration. (triggers: **/*.ts, **/*.tsx, validate, sanitize, xss, injection, auth, password, secret, token)
> typescript-language
Modern TypeScript standards for type safety and maintainability. Use when working with types, interfaces, generics, enums, unions, or tsconfig settings. (triggers: **/*.ts, **/*.tsx, tsconfig.json, type, interface, generic, enum, union, intersection, readonly, const, namespace)
> typescript-best-practices
Idiomatic TypeScript patterns for clean, maintainable code. Use when writing or refactoring TypeScript classes, functions, modules, or async logic. (triggers: **/*.ts, **/*.tsx, class, function, module, import, export, async, promise)