turf.circle(...) uses an inscribed polygon to estimate a circle. I am wondering if you have considered different constructions of this polygon. A construction of a regular polygon that has equal area to the circle it's approximating will give better results in many cases. The following post contains many more detail you may consider:
https://observablehq.com/@lemmingapex/smarter-approximations-for-circles

Please let me know what you think about this and if you have any questions. Thanks!