This is more a question: is there any plans when conversion of ngeative numbers to buffers will be implemented?
As of now I'm doing this to convert negative numbers to Int64:
var buf1 = new Buffer(4);
var buf2 = new Buffer(4);
// <Buffer ff ff ff ff ff ff ff ff>
var buf3 = Buffer.concat([ buf1, buf2 ]);
It would be very handy to utilize only bigint package to achieve the same result.