Don't use instanceof ArrayBuffer, it breaks in Jest

[abonander]

I'm trying to use asn1js but I'm getting an error from checkBufferParams in this lib due to the following problem which was previously fixed but has cropped up again in Node v11.15.0: nodejs/node#20978 (comment)

The problem is that Uint8Array.prototype.buffer instanceof ArrayBuffer always returns false when running code in Jest. It doesn't make any sense (even inspecting the value shows a class of ArrayBuffer) but it seems to be a bug in the current V8 version of Node.

The popular workaround seems to be to check the constructor name strings instead: Stuk/jszip#598

[YuryStrozhevsky]

@abonander I do not want to make a workarounds on well-known bugs. Let's wait for the bug to be fixed in Node.

[abonander]

Node has announced that it's not their problem: nodejs/node#20978 (comment)

Jest has had an issue open since February: jestjs/jest#7780