Add existing to tracked

node_modules/@cesium/engine/Source/Scene/GltfPipeline/removePipelineExtras.js

@@ -0,0 +1,42 @@
+import ForEach from "./ForEach.js";
+import defined from "../../Core/defined.js";
+
+/**
+ * Iterate through the objects within the glTF and delete their pipeline extras object.
+ *
+ * @param {object} gltf A javascript object containing a glTF asset.
+ * @returns {object} glTF with no pipeline extras.
+ *
+ * @private
+ */
+function removePipelineExtras(gltf) {
+  ForEach.shader(gltf, function (shader) {
+    removeExtras(shader);
+  });
+  ForEach.buffer(gltf, function (buffer) {
+    removeExtras(buffer);
+  });
+  ForEach.image(gltf, function (image) {
+    removeExtras(image);
+  });
+
+  removeExtras(gltf);
+
+  return gltf;
+}
+
+function removeExtras(object) {
+  if (!defined(object.extras)) {
+    return;
+  }
+
+  if (defined(object.extras._pipeline)) {
+    delete object.extras._pipeline;
+  }
+
+  if (Object.keys(object.extras).length === 0) {
+    delete object.extras;
+  }
+}
+
+export default removePipelineExtras;