[How to] Convert WinRTError.number to hex value

Question

A error.number.toString(16) does not work.

This "-2147014836" should be translated to 0x8007274c.

So we have to do some math:

(hresult < 0 ? (0xFFFFFFFF + hresult + 1) : hresult).toString(16)

or

Number.prototype.toHRESULT = function() {

return (this < 0 ? (0xFFFFFFFF + this + 1) : this).toString(16);

}

Then you can do if (error instanceof WinRTError) return error.number.toHRESULT() to use that as a key to a translation file or log it.