### Version 2.6.11 ### Reproduction link [https://codepen.io/frOracle/pen/vYOEEVW](https://codepen.io/frOracle/pen/vYOEEVW) ### Steps to reproduce use $http.delete in @click ### What is expected? $http.delete is a function, not unary operator ### What is actually happening? a warning "avoid using JavaScript unary operator as property name" --- Related https://github.com/vuejs/vue/issues/5464 <!-- generated by vue-issues. DO NOT REMOVE -->