React to Rust, no try/catch

I built three libraries independently. When I put them in the same project, the boundaries between them disappeared. This is what was left. The path: a click in a React form, through schema validation, into a Rust solver running in WebAssembly, back through a typed Result , and out to a rendered porkchop heatmap — without using try/catch for control flow anywhere. The libraries: lambert-izzo — Rust solver for Lambert's problem, exposed to JS via wasm-pack . Returns a typed LambertOutcome ; domai