<!-- BUG REPORT TEMPLATE --> ### Vue.js & vue-router.js version 2.5.17 & 3.0.1 ### Reproduction Link https://jsfiddle.net/8xrk1n9f/1279/ ### Steps to reproduce ``` javascript router.map({ '/foo': { component: Foo }, '/bar': { component: Bar } }) router.alias({ '/baz': '/bar' }) ``` ### What is Expected? The `/baz` path is alias of `/bar`, it should be active when i click `/baz` link. ### What is actually happening? nothing happened, but route to component `Bar`