Optique 1.0 introduces discriminated unions for CLI argument parsing, replacing error-prone optional fields with type-safe authentication method selection. This approach ensures compile-time validation of mutually exclusive CLI options like token vs basic auth vs OAuth credentials. The library addresses a common pain point in CLI development where runtime validation doesn't translate to type safety.
Background
CLI libraries like Commander.js typically use optional fields with runtime validation, which doesn't provide type safety for mutually exclusive argument groups. Developers must manually handle complex branching logic without compiler assistance.
- Source
- Lobsters
- Published
- Apr 16, 2026 at 11:32 PM
- Score
- 6.0 / 10