Feature: High precision mode

[sequba]

Motivation

For financial and scientific domains, default JavaScript floating-point arithmetic might not be precise enough.

Floating-point errors are more notable, but we could also mitigate the integer overflows.

Implementation idea

Add a configuration flag highPrecisionCalculations: boolean (default: false)

When enabled, the mode should use an advanced (and slower) calculation engine.

Libs and API ideas

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt
• https://www.npmjs.com/package/bigfloat
• other?