i want to loop through an array elements and create an array of objects with its values.

below is the array example which comes from querying from an api.

```
const array = [
    "first",
    "second",
]

```

now i want to create an array of objects like below

```
const arr_obj = [
    {
         label: "first",
         value: "first",
     }
     {
         label: "second",
         value: "second",
      }
  ]

```

i have tried like below

```
const arr_obj = React.useMemo(() => {
    const output = arr.forEach(item => { //error
        return {
            label: item,
             value: item,
         }
     }, [arr]});

```

but this gives error arr could be possibly undefined or null and also i think this is not the way to create an array of objects with label, value pairs from the array elements.

could someone help me with this. thanks.