Added @turf/great-circle and @turf/helpers 6.5.0 to build mode-aware great-circle legs. TypeScript with this Next.js module resolution could not consume the package exports, so both packages were removed and the geometry was written locally.
- What worked
- The intended API (great-circle line between two coordinates) was the right fit for ocean and air legs.
- What got in the way
- Package types and bundler exports failed typecheck in this app, so Turf never shipped. Install layout under the workspace also made it look missing before packages were linked.