Thank you for sharing this library!

In my current project I need to convert Decimal128 (BSON/MongoDB) values to Decimal.js on big data sets (server side). The simple Decimal(decimal128.toString()) solution is a bottleneck and I noticed I could do around 2-4x faster if I did not involve strings in the process.

I extracted the significand and the exponent from the Decimal128 (it is quite fast) and I would like to construct a Decimal.js object from these. Currently I do this to construct the object:

  const decimal = Decimal(0);
  decimal.d = digits;
  decimal.e = exponent;
  decimal.s = isNegative ? -1 : 1;
  return decimal;

I was wondering would it be possible to have an "advanced" constructor which can either take a significand digits/significand in 32-bit chunks + exponent (and then convert it to the internal format) or to expose the internal format?

By the way, do you happen to have some docs/spec on the internal format? (A bit more detailed than the public docs.)