Effect 4.0
3 hours ago
- Effect 4.0 is a major rebuild, offering improved speed, lower memory usage, and smaller bundle sizes through tree-shaking.
- The ecosystem is unified under a single package with zero runtime dependencies, reducing supply chain risks and ensuring lockstep releases.
- Effect scales from a single function to distributed systems, featuring typed errors, dependency injection, resource management, structured concurrency, and observability.
- Adoption is mainstream, used by companies of all sizes, with community projects like Alchemy and Foldkit.
- Long-term support is introduced: Effect 4.x bug fixes until September 2029 or one year after 5.0, security fixes until September 2029 or two years after 5.0.
- Future plans include stabilizing the ecosystem, refining unstable modules, and expanding native platform support and higher-level primitives.
- Resources such as a migration guide and documentation are available for users.