> Object.setPrototypeOf({}, null);
TypeError: Cannot read property 'properties' of null
at intrp.Object.setPrototypeOf (/Users/cpcallen/src/CodeCity/server/interpreter.js:3998:50)
at intrp.NativeFunction.call (/Users/cpcallen/src/CodeCity/server/interpreter.js:732:18)
at Interpreter.stepFuncs_.Call (/Users/cpcallen/src/CodeCity/server/interpreter.js:5659:14)
at Interpreter.stepFuncs_.CallExpression (/Users/cpcallen/src/CodeCity/server/interpreter.js:5622:29)
at Interpreter.run (/Users/cpcallen/src/CodeCity/server/interpreter.js:309:38)