Converting BigInt to string in result type parsing

[hicaro-bh]

I noticed that when parsing BigInt values from MSSQL, Tedious converts them to strings even though the underlying readBigInt64LE returns a native JavaScript BigInt:

function readBigInt(buf: Buffer, offset: number): Result<string> {
  let value;
  ({ offset, value } = readBigInt64LE(buf, offset));

  return new Result(value.toString(), offset);
}

I'm curious about the reasoning behind this design decision. Is this related to:

• JSON serialization compatibility?
• Cross-environment support considerations?
• Precision guarantees?
• Framework compatibility?

Thanks for maintaining this library!