Fix corner radius for vectors without strokecaps

plugin-src/transformers/partials/transformVectorPaths.ts

@@ -6,13 +6,43 @@ const hasFillGeometry = (node: VectorNode | StarNode | LineNode | PolygonNode):
   return 'fillGeometry' in node && node.fillGeometry.length > 0;
 };
 
+const hasStrokeGeometry = (node: VectorNode | StarNode | LineNode | PolygonNode): boolean => {
+  return 'strokeGeometry' in node && node.strokeGeometry.length > 0;
+};
+
+const hasStrokeCaps = (node: GeometryMixin & VectorLikeMixin): boolean => {
+  if (node.strokeCap !== figma.mixed) {
+    return node.strokeCap !== 'NONE';
+  }
+
+  if (node.vectorNetwork && node.vectorNetwork.vertices.length > 0) {
+    // check all vertices to see if they have stroke caps
+    return node.vectorNetwork.vertices.some(
+      vertex => vertex.strokeCap && vertex.strokeCap !== 'NONE'
+    );
+  }
+
+  return false;
+};
+
 const getVectorPaths = (node: VectorNode | StarNode | LineNode | PolygonNode): VectorPaths => {
+  console.log(node);
   switch (node.type) {
     case 'STAR':
     case 'POLYGON':
       return node.fillGeometry;
     case 'VECTOR':
-      return hasFillGeometry(node) ? node.fillGeometry : node.vectorPaths;
+      // mixed vector & simple open figures
+      if (hasStrokeGeometry(node) && !hasStrokeCaps(node) && node.strokeGeometry.length > 0) {
+        return node.strokeGeometry;
+      }
+
+      // simple closed figures
+      if (hasFillGeometry(node)) {
+        return node.fillGeometry;
+      }
+
+      return node.vectorPaths;
     case 'LINE':
       return node.strokeGeometry;
   }