function types.isUint8Array
          
Usage in Deno
import { types } from "node:util";
isUint8Array(object: unknown): object is Uint8Array 
      Returns true if the value is a built-in Uint8Array instance.
util.types.isUint8Array(new ArrayBuffer());  // Returns false
util.types.isUint8Array(new Uint8Array());  // Returns true
util.types.isUint8Array(new Float64Array());  // Returns false
object is Uint8Array