WebAssembly中的斐波那契数不能编译

// fib.wat
(module
  (import "js" "fibonacci" (func $fibonacci (param i32) (result i32)))
  (export "calculateFibonacci" (func $calculateFibonacci))
  (func $calculateFibonacci (param $n i32) (result i32)
    (call $fibonacci (get_local $n))
  )
)

// index.js
async function loadWebAssembly(filename, imports = {}) {
  const response = await fetch(filename);
  const buffer = await response.arrayBuffer();
  const module = await WebAssembly.instantiate(buffer, imports);
  return module;
}

const imports = {
  js: {
    fibonacci: (n) => {
      if (n <= 1) return n;
      return fibonacci(n - 1) + fibonacci(n - 2);
    }
  }
};

loadWebAssembly('fib.wasm', imports).then((module) => {
  const calculateFibonacci = module.instance.exports.calculateFibonacci;
  const n = 10;
  const result = calculateFibonacci(n);
  console.log(`Fibonacci(${n}) = ${result}`);
});