Turf distance measurement doesn't match TurfJS

I am trying to port transformRotate from Turf.JS as I need it for a project.

In the method comments there are some examples with the expected result, my port didn't match. In trying to debug this I've noticed that the distance tests don't match between JS and the Java port.

The standard test points [-75.343,39.984][-75.534, 39.123] used the km distance in TurfJS is 97.12922118967835

Those same points are tested in the port but the expected result is different: 97.15957803131901

This third party suggests TurfJS is correct.

I've noticed Earth radius is different between the implementations so I guess this is the why

6371008.8

6378137

I see JS nearly changed to the same value for earth's radius but got reverted.

Is there a reason the port doesn't produce the same result as the original?

まず services-turf/src/main/java/com/mapbox/turf/TurfMeasurement.java から始め、その距離計算を TurfJS と比較し、次に services-turf/src/test/java/com/mapbox/turf/TurfMeasurementTest.java を調べます。実装によって異なる値が生成される理由を特定し、距離テストが意図された TurfJS の動作を反映するように、実装または期待値を更新します。