JavaScript.Decimal exposes a Decimal class with safe floating-point number control. It is useful for high precision operations, like monetary operations that involve currencies.

xfloat is a small (one ES module with ~600 lines of code, ~12KiB minified), dependency-free JavaScript library for representing and computing with arbitrary-precision binary floating-point numbers. It ...

If you’d had asked us if converting integer division to floating point might make a program run faster, we’d have bet the answer was no, but we’d have been wrong.