Route params return "()" parentheses after the param name

[lucassimines]

I experienced a change of the param string when calling the route.children.

Using an id as a param, the path used to return only :id, and now it's returning :id(), is this some update or maybe an issue to be fixed?

[posva]

I think Nuxt does this by default to improve the support of mixed params routes: file [a]_b becomes :a()_b instead of :a_b which would have a param named a_b. This is a valid syntax for params.