When

Uses Swift generics to enforce type safety across promise chains, ensuring compile-time checks for data types and reducing runtime errors.

Supports then, done, fail, always, and recover methods for readable asynchronous workflows, as demonstrated in the README's code examples.

Includes a recover method to handle errors and continue promise chains, improving resilience in async operations without breaking the flow.

Provides a when function to manage multiple promises concurrently, resolving only when all complete or failing on first rejection.