wasm-bindgen/examples/math/index.js

// For more comments about what's going on here, check out the `hello_world`
// example
const rust = import('./math');

rust.then(m => {
    m.run();
    console.log('and in JS the answers look like:');
    console.log(`Math.log2(10.0) = ${Math.log2(10.0)}`);
    console.log(`Math.sin(1.2) = ${Math.sin(1.2)}`);
});