(module
  (import "env" "greet" (func $greet))

  (func
    ;; call the greet function
    call $greet
  )

  (start 1) ;; run the first function automatically
)

const url = '{%wasm-url%}';
await WebAssembly.instantiateStreaming(fetch(url), {
  env: {
    greet: function () {
      console.log('Hello');
      // Expected output: "Hello"
    },
  },
});