If there will be a version-controlling script?

[Cyame]

What problem does this feature solve?

I really love the features of vue2.0 and also heard of some fascinating updates in vue3.0 program. So I'd like to know would you keep the version of both 2 and 3, or 3 is a replacement of 2?
Actually, some great projects are powered by 2.0 and there are also some project based on 3.0. So it's hard for me to make a choice in the global environment.
Now, a trending solution of that is to build two local env of 2 and 3 with vue-cli as well, then put them into the $PATH with name modified. To be honest, it's not a good idea for it will manually change the executable file's name, which will bring some potential bugs in my opinion.

What does the proposed API look like?

So if you want to keep both the versions, I suggest for a script like python in Windows platform that we could use py -2 and py -3 to select base version from the global environment. Developer could use vue-cli -2 init webpack project and also vue-cli -3 create project or something like that.

Or if the 2.0 won't be maintained after a powerful 3.0 is done?

Appreciate.

[yyx990803]

See vuejs/vue-cli#5637

You will be able to select Vue 2/3 when you create a new project via vue-cli once the PR is merged.