Effect

Effect is a powerful TypeScript library designed to help you create complex, synchronous, and asynchronous programs with ease. It acts as the missing standard library for TypeScript, providing a solid foundation of data structures, utilities, and abstractions to make building applications simpler and more maintainable as they grow.

It offers a suite of powerful features to improve your development workflow:

• Maximum Type-Safety: Leverages the full power of TypeScript, treating errors as values to eliminate try/catch blocks and ensure that if your code compiles, it works.
• Composable & Reusable: Every part of the ecosystem is designed to work together. Building applications with Effect feels like playing with Lego, keeping your code clean and testable.
• Batteries-Included Ecosystem: Replaces many one-off dependencies with built-in solutions for data validation, serialization, CLI and HTTP frameworks, and asynchronous queues.
• Built-in Observability: Integrates seamlessly with OpenTelemetry for first-class tracing and metrics, giving you full visibility over your application's performance.