(module

  (func (export "or") (param $a i32) (param $b i32) (result i32)
    ;; load both numbers onto the stack
    local.get $a
    local.get $b

    ;; `or` both numbers and return the result
    i32.or
  )

)

const url = '{%wasm-url%}';
await WebAssembly.instantiateStreaming(fetch(url), { console }).then(
  (result) => {
    const or = result.instance.exports.or;

    const res = or(0b10000010, 0b01101111);
    console.log(numToBin(res));
    // Expected output: "11101111"
  },
);

function numToBin(num) {
  return (num >>> 0).toString(2).padStart(8, '0');
}