Disallows the use of `Object.prototype` builtins directly If objects are created via `Object.create(null)` they have no prototype specified. This can lead to runtime errors when you assume objects have properties from `Object.prototype` and attempt to call the following methods: - `hasOwnProperty` - `isPrototypeOf` - `propertyIsEnumerable` Instead, it's always encouraged to call these methods from `Object.prototype` explicitly. ### Invalid: ```typescript const a = foo.hasOwnProperty("bar"); const b = foo.isPrototypeOf("bar"); const c = foo.propertyIsEnumerable("bar"); ``` ### Valid: ```typescript const a = Object.prototype.hasOwnProperty.call(foo, "bar"); const b = Object.prototype.isPrototypeOf.call(foo, "bar"); const c = Object.prototype.propertyIsEnumerable.call(foo, "bar"); ```