Merge pull request #287 from xyz-tools/fix/legacy-batched-mesh

Support webgl 1

Author: remcoder

package-lock.json

@@ -941,7 +941,9 @@ export class WebGLPreview {
 
     geometries.forEach((geometry) => {
       const geometryId = batchedMesh.addGeometry(geometry);
-      batchedMesh.addInstance(geometryId);
+      // NOTE: for older versions of three.js, addInstance is not available
+      // This allow webgl1 browsers to use the batched mesh
+      batchedMesh.addInstance?.(geometryId);
     });
 
     return batchedMesh;