Echo JS 0.11.0

It may also be worth either looking into or hand-crafting a tool using the BigInt[1] (Int64) data type, with a fixed precision. Also, worth following the Decimal/BigDecimal proposal[2]

1. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt
2. https://github.com/tc39/proposal-decimal