WIT Contracts

Dalang uses WebAssembly Interface Types (WIT) to define component contracts. Each package versions independently and is consumed via wit-deps without pulling unrelated types.

Packages

`dalang-http`

Defines HTTP request/response types for Wasm components handling inbound traffic.

Source: product/wit/dalang-http/world.wit

`dalang-event`

Defines event types for the asynchronous event bus between components.

Source: product/wit/dalang-event/world.wit

`dalang-state`

Defines state management types for persistent component state.

Source: product/wit/dalang-state/world.wit

Consuming

Internal Rust crates consume WIT packages via wit-bindgen:

wit_bindgen::generate!({
    path: "../../wit/dalang-http",
    world: "dalang-http-world"
});

External SDKs will provide language-specific bindings generated from these contracts.