Fixed issue when proj returned geocentric Z value as 0. 0 value is now passed correctly.

lcalisto · lcalisto · commit ca9973450882 · 2019-08-23T16:30:59.000+01:00
diff --git a/lib/core.js b/lib/core.js
@@ -8,7 +8,11 @@ function transformer(from, to, coords) {
     transformedArray = transform(from, to, coords);
     if (coords.length > 2) {
       if ((typeof from.name !== 'undefined' && from.name === 'geocent') || (typeof to.name !== 'undefined' && to.name === 'geocent')) {
-        return [transformedArray.x, transformedArray.y, transformedArray.z || coords[2]].concat(coords.splice(3));
+        if (typeof transformedArray.z === 'number') {
+          return [transformedArray.x, transformedArray.y, transformedArray.z].concat(coords.splice(3));
+        } else {
+          return [transformedArray.x, transformedArray.y, coords[2]].concat(coords.splice(3));
+        }
       } else {
         return [transformedArray.x, transformedArray.y].concat(coords.splice(2));
       }
