<router-link> component is mutating a prop

[guillaumeduliscouet]

Version

2.6.0

Reproduction link

https://codesandbox.io/embed/vue-template-hf9hq

Steps to reproduce

• Click on 'route' link
• Look at the console

What is expected?

In components/Parent.vue the object childRoute, that is passed as the to prop of <router-link>, should not be mutated.

What is actually happening?

It is mutated (the key parent is added to childRoute.params)

[posva]

I haven't checked but there is a chance that the problem comes from router.resolve or a normalization function

[zrh122]

Maybe PR #2802 can fix it, but the test code in the PR is not for this issue. @posva

I have found this issue when i try to fix #2800, and this comment mention it. But i didn't add new issuse for it.

[posva]

I completely forgot about that PR, thank you @zrh122 ! I will take another look

[posva]

Closed in #2802