Altanis

class Main {
    private static double factorial(int n) {
        double result = 1;
        
        for (int i = 1; i <= n; i++) {
            result *= i;
        }
        
        return result;
    }

Altanis

    WebAssembly.instantiateStreaming = (r, i) => r.arrayBuffer().then(b => WebAssembly.instantiate(b, i));
    const _initWasm = WebAssembly.instantiate;
    WebAssembly.instantiate = (wasm, imports) => {
        const loader = {raw: new Uint8Array(new Uint8Array(wasm)), buffer: new Uint8Array(wasm), imports};
        _initWasm(loader.buffer, loader.imports).then(results => {
            console.log(results);
            const memory = Object.values(results.instance.exports).find(e => e instanceof WebAssembly.Memory);
            window.HEAPF32 = new Float32Array(memory.buffer);
        });
        return _initWasm(wasm, imports);