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“The WebAssembly Component Model represents the next evolution of software modularity. By defining typed interfaces in WIT (Wasm Interface Type), a component written in Rust can seamlessly link and call a component written in Python or Go with zero manual serialization glue.”
Language-agnostic composable micro-modules using WebAssembly Interface Types (WIT).
;; WIT Interface Definition (calculator.wit)
package cosmos:math;
interface calculator {
add: func(a: s32, b: s32) -> s32;
multiply: func(a: s32, b: s32) -> s32;
}// Composable Component Linkage
import { calculator } from './calculator.component.wasm';
console.log(calculator.add(50, 50)); // 100Define interface in world.wit: interface calculator { add: func(a: s32, b: s32) -> s32; }
Rust component implements calculator interface
Python/TypeScript host imports and binds the component with full type safety
Canonical ABI transparently marshals strings, records, variants, and lists
Enables composable, polyglot software ecosystems across cloud and edge
Canonical ABI eliminates custom marshalling overhead, allowing direct structured data exchange between polyglot languages at native hardware memory speeds.