> swift-language
Standards for Optionals, Protocols, Extensions, and Type Safety. Use when working with Swift Optionals, Protocols, Extensions, or type-safe APIs. (triggers: **/*.swift, protocol, extension, optional, guard, enum)
curl "https://skillshub.wtf/HoangNguyen0403/agent-skills-standard/swift-language?format=md"Swift Language Standards
Priority: P0
Implementation Guidelines
Optionals & Safety
- Never Force Unwrap: Use
guard let,if let, or nil coalescing (??). - Nil Comparison: Use
value != nilinstead ofif let _ = value. - Implicitly Unwrapped: Avoid
Type!. Use properType?.
Protocols & Extensions
- Protocol Composition: Prefer
struct+ protocols over class inheritance. - Extensions: Use for conformance (
extension MyType: Codable), not storage. - Protocol Witnesses: Explicitly implement all required members.
Type Safety
- Avoid
Any: Use generics or associated types instead. - Enums: Prefer enums with associated values over multiple Optionals.
- Value Types: Default to
structunless reference semantics needed.
Anti-Patterns
- Force Unwrapping:
**No ! operator**: Use safe unwrapping. - Sentinel Values:
**No -1 for failure**: Use Optional. - as! Casting:
**No Force Cast**: Use conditional cast (as?).
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)