Pass down route props to $attrs

[posva]

Version

2.7.0

Reproduction link

https://www.webpackbin.com/bins/-Ks8plb2Lsqpt8Po3Rxg

Steps to reproduce

Click on the different links

What is expected?

Passing props in the route object:

{ path: '/', component: Hello, props: { name: 'world' }},

should appear in $attrs as long as name is not declared as a prop in Hello.vue

What is actually happening?

no prop

---

moved from vuejs/vue#6426

[posva]

I haven't dived in already but it may be at this line: https://github.com/vuejs/vue-router/blob/dev/src/components/view.js#L71

[lbogdan]

I did some debugging and found that the issue is in the <router-view> component: it takes the params in the route and sends them to the route component verbatim, in props, without checking if they are defined or not on the component (which was normal behavior before the introduction of $attrs in vue 2.4.0).
What it should do instead is passing the defined props in props, and the rest in attrs.