Developing Wasm component model in MoonBit with minimal output size
WebAssembly is a new low-level virtual instruction set standard for a sandbox model. It is low-level, meaning it is close to native speed. It is virtual, meaning it can be run on many runtimes, including the browsers or on the operating sytems with projects such as wasmtime or wamr. It is a sandbox model, meaning that it can not interact with outside world unless using FFI. The FFI, however, can only return numbers, making the usage through linear memory a more efficient way. Many programming languages can compile to it, including Java, JavaScript/TypeScript, Python, Rust and, of course, MoonBit.
So how can we combine the Wasm components that are implemented in different programming languages? Enter the Component Model, a proposal to unify the surface. With the Component Model, we define a high-level API, and components can be combined with other components as long as the interfaces match.
This blog will follow a step-by-step guide on writing a small HTTP server that prints "Hello World" with MoonBit and demonstrate how MoonBit achieves high compatibility and interoperability while significantly reducing output size.
