I have an array

```
const countries = [{
  name: "Angola",
  region: "Africa"
}, {
  name: "Spain",
  region: "Europe"
}, {
  name: "Italy",
  region: "Europe"
}]

```

I need the result to be:

```
const result = {
  Europe: [{
    name: "Spain"
  }, {
    name: "italy"
  }],
  Africa: [{
    name: "Angola"
  }]
}

```

I've tried 2 approaches:

* Approach 1:

```
const result = countries.reduce((acc, {
  name,
  region
}) => {

  acc[region] = [...acc[region], {
    name
  }]

  return acc
}, {})

```

* Approach 2:

```
const result = countries.reduce((acc, {
  name,
  region
}) => {
  return {
    ...acc,
    [region]: [...acc[region], {
      name
    }]
  }
}, {})

```

None of them work because I couldn't find a way to spread the existing items in the array, which at a first iteration is obviously null.

Thanks