removed undefined

Author: scf4

src/index.js

@@ -38,16 +38,17 @@ class ApolloError extends ExtendableError {
     const message = this._humanized_message;
     const time_thrown = this._time_thrown;
     const data = this._data;
-    const locations = this._locations || undefined;
-    const path = this._path || undefined;
-    return {
+    const locations = this._locations;
+    const path = this._path;
+    let error = {
       message,
       name,
       time_thrown,
       data,
-      locations,
-      path,
     };
+    if (locations) error.locations = locations;
+    if (path) error.path = path;
+    return error;
   }
 }
 

test/spec.js

@@ -27,17 +27,15 @@ describe('createError', () => {
       },
     });
 
-    const { message, name, time_thrown, data, locations, path } = e.serialize();
-    
+    const { message, name, time_thrown, data } = e.serialize();
+
     expect(message).to.equal('A foo error has occurred');
     expect(name).to.equal('FooError');
     expect(time_thrown).to.equal(e._time_thrown);
     expect(data).to.eql({
       hello: 'world',
       foo: 'bar'
     });
-    expect(locations).to.be.undefined;
-    expect(path).to.be.undefined;
   });
 });