Loading WASM::COSMOS...
“Rather than writing raw WAT by hand, developers author compute-heavy algorithms in Rust (using wasm-pack and wasm-bindgen) or C/C++ (using Emscripten). The LLVM compiler backend optimizes algorithms with SIMD vectorization and strips dead code into ultra-compact .wasm binaries.”
Compiling high-performance Rust and C/C++ codebases into optimized .wasm packages.
// Rust Source (src/lib.rs)
use wasm_bindgen::prelude::*;
#[wasm_bindgen]
pub fn fibonacci(n: u32) -> u32 {
match n {
0 => 0,
1 => 1,
_ => fibonacci(n - 1) + fibonacci(n - 2),
}
}import init, { fibonacci } from './pkg/rust_wasm.js';
await init();
console.log('Fibonacci(40):', fibonacci(40)); // Instant calculationAuthor compute logic in Rust: #[wasm_bindgen] pub fn fast_blur(img: &[u8]) -> Vec<u8>
Run wasm-pack build --target web --release
LLVM optimizes with -O3 and wasm-opt runs binary size shrinking
Emits .wasm binary, TypeScript type definitions, and JavaScript glue wrappers
Import directly in React/Next.js: import init, { fast_blur } from "./pkg/blur.js"
Running wasm-opt -Oz (from Binaryen) performs dead-code elimination, inlining, and tree-shaking, shrinking Wasm binary sizes by up to 40%.