This seems like a dumb question, but here I am.

I know an interface can be used to define an object and its keys, but how do I make an interface if that object is an array?

For example, the interface for

```
const object = {
   bar: 1
   foo: 2
}

```

would be

```
interface myInterface {
   bar: number
   foo: number
}

```

What if my object is:

```
const object = [[1,2,3],[4,5,6],[7,8,0]]

```

What about a 3D array?

How do I define this interface?