how to get result data from async fetch inside another function

I’m trying to use async fetch call to get data from the server but the result looks like an empty async function. what am I doing wrong?

this is my code

  function initAutoComplete (selector, params = []) {
    let config = {
      selector: selector, 
      data: {
        src: async () => {
          try {
            let myurl = `/component/get_states?country_id=64`; // http://localhost
            const response = await fetch(myurl)
            const source = await response.json();
            console.log('source', source); // ==> this doesn't even appear in the console log
            return source;
          } catch (err) {
            return err;
          }
        },
        keys: ["state_name"],
        cache: true,
      },
    };
    console.log('config', config.data);
    return config;
  }
  const asd = initAutoComplete('#state_name');
  console.log('asd', asd.data);

this is the result in the developer tools

although when I used postman to test the url, it shows the data as expected

[
    {
        "id": "17",
        "state_name": "Bali",
        "country_name": "Indonesia"
    },
    {
        "id": "16",
        "state_name": "Banten",
        "country_name": "Indonesia"
    },
    {
        "id": "7",
        "state_name": "Bengkulu",
        "country_name": "Indonesia"
    },
]