geodesy
Libraries of geodesy functions
tsgeo
TsGeo provides abstractions to geographical coordinates (including support for different ellipsoids) and allows you to calculate geographical distances between coordinates with high precision.
@cdeshpande/geo-utils
A lightweight, blazing-fast TypeScript library for calculating distances (Haversine) and geospatial math with support for kilometers and miles.
@panaaj/sk-geodesy
Subset of libraries of geodesy functions from http://www.movable-type.co.uk/scripts/geodesy-library.html modified for use with Signal K server plugins