await to js

async function test() {
    let data;

    try {
        data = await asyncData();
    } catch (err) {
        return console.log(err);
    }

    return do_something_else(data);
}

///////////////////////

function to(promise) {
   return promise.then(data => {
      return [null, data];
   })
   .catch(err => [err]);
}

async function test() {
    const [err, data] = await to(asyncData());

    if (err) return console.log(err);

    return do_something_else(data);
}