Square brackets around vs after expression in Typescript

Question

The following two Typescript square bracket notations—are there any differences between them? Attempted a few situations, and it appears they are equivalent.

I'm grateful.

interface test {
  a: string;
  b: string;
}

const x: test[] = [{a: "aaaa", b: "bbbb"}]

const y: [test] = [{a: "aaaa", b: "bbbb"}]