Catch all routes gives error: Expected "0" to be defined

[Livog]

Version

3.0.2

Reproduction link

https://codesandbox.io/s/y22y9m738v

Steps to reproduce

Hello!

I use nuxt.js with this folder structure.

| - pages
|____ _.vue
|__ order
|____ _id.vue
|__coach
|____ _slug.vue

Which generates:

routes: [{
      path: "/coach/:slug?",
      component: _53d49874,
      name: "coach-slug"
    }, {
      path: "/order/:id?",
      component: _0fe25cac,
      name: "order-id"
    }, {
      path: "/*",
      component: _4a6e1890,
      name: "all"
    }],

and it gives me this error:

[nuxt] Error while initializing app TypeError: Expected "0" to be defined
    at app.js:3259
    at app.js:1391
    at Array.map (<anonymous>)
    at _callee5$ (app.js:1390)
    at tryCatch (commons.app.js:5425)
    at Generator.invoke [as _invoke] (commons.app.js:5659)
    at Generator.prototype.(:3000/anonymous function) [as next] (http://localhost:3000/_nuxt/commons.app.js:5477:21)
    at asyncGeneratorStep (commons.app.js:12)
    at _next (commons.app.js:34)

This does not happen in vue-router@3.0.1.
Rolling back with adding this to the package.json solves it for now (if anyone want a solution.)

"resolutions": {
    "vue-router": "3.0.1"
  },

This error is caused because I have a catch all / fallback route. I have tested in multiple Node versions and Nuxt version.

What is expected?

Catch all routes working without error.

What is actually happening?

Catch all routes give a error message.

---

Related: #724

[aldarund]

could be something caused by this #1995

[manniL]

https://codesandbox.io/s/54v0vl1rzn

Can't repro it with pure Vue + VueRouter. Might be an interop issue between Nuxt and the new(est) VueRouter 🤔