There’s no difference between the two, it’s the same.
It says this in the docs:
Array types can be written in one of two ways. In the first, you use
the type of the elements followed by [] to denote an array of that
element type:
let list: number[] = [1, 2, 3];
The second way uses a generic array type, Array:
let list: Array<number> = [1, 2, 3];
You do need to use the Array<T> form when you want to extend it for example:
class MyArray extends Array<string> { ... }
but you can’t use the other form for this.