deepEqual only compares TypedArrays but not bare ArrayBuffers

[Swiftb0y]

The following code reproduces the issue:

require("should");

const a = (new Uint8Array([1])).buffer;
const b = (new Uint8Array([2])).buffer; 

console.log(a.constructor, b.constructor);
// [Function: ArrayBuffer] [Function: ArrayBuffer]
console.log(a.should.deepEqual(b)); // doesn't throw
/*
Assertion {
  obj: ArrayBuffer { [Uint8Contents]: <01>, byteLength: 1 },
  anyOne: false,
  negate: false,
  params: {
    operator: 'to equal',
    expected: ArrayBuffer { [Uint8Contents]: <02>, byteLength: 1 },
    message: undefined,
    details: '',
    showDiff: true
  }
}
*/

const c = new Uint8Array([1]);
const d = new Uint8Array([2]);

console.log(c.constructor, d.constructor);
// [Function: Uint8Array] [Function: Uint8Array]
console.log(c.should.deepEqual(d)); // throws

The first deepEqual should throw as well, but it doesn't. I'm using shouldjs 13.2.3