Missing param due to case-sensitive token regex

Version

3.1.3

Reproduction link

https://jsfiddle.net/j4s8ka1v/

Steps to reproduce

Unfortunately the above reproduction link does not reproduce the issue, not sure why the tokensToFunction method isnt used in the jsfiddle. But I’ve traced the issue to tokensToFunction from path-to-regexp. The issue seems to have been fixed in v3.1.0 due to this pr. You can check eg dist/vue-router.esm.js to see the RegExp does not set the i modifier

That makes this report more or less a fyi / request to upgrade path-to-regexp 😃

Locally the error is caused by a route similar to

  routes: [{
      path: "/:locale(en|pt-br)?/:source(.*)?",
      component: myComponent,
    }],

which fails when you browse to e.g. /pt-BR/path:

What is expected?

That the token / param is matched case-insensitively

What is actually happening?

It doesnt, causing a missing param error

[pimlie]

fyi: path-to-regexp v1.8.0 has been released which includes the backported tokenstofunctionoptions fix by @boringame

[posva]

fixed by #3032