Add `.nvmrc` when generating a project with `wasp new`

[infomiho]

We require a certain Node.js version to be available when running wasp start, it would be nice for users to have a .nvmrc file available in the project dir.

This would enable users to execute nvm use when they want to use the correct Node.js version instead of remembering that they need to use Node.js 18 and execute nvm use 18.

[Martinsos]

Not a bad idea! What when they upgrade their wasp version and need to update .nvmrc, is that a bother? What if they are not using nvm (well they probably are but still)?

[Zeko369]

IMO the upgrade problem is really easy to get around, in a case wasp upgrades, you can just change the engines.node path in package.json to require something higher and it's going to throw when running it with an older version so users can upgrade

Preview of the most popular tooling and how they handle .nvmrc

• nvm -> lodas .nvmrc
• fnm -> lodas .nvmrc
• n -> loads .nvmrc
• asdf-nodejs -> can easily be made to load .nvmrc
• nvm-windows -> kinda hacky, but you can do it

So IMO this would fix a lot of problems (including some problems I had with wasp out of the box)

[Martinsos]

@Zeko369 thanks for this analysis, this makes quite a lot of sense then! Yeah, I am in for it then, it can't hurt. It should also be easy for users to create their own .nvmrc though, right? I mean if they need to know how to update it, we can also expect them to be able to create their own? But you think it helps if they get it right off the bat, because it makes it clear that Wasp is expecting a specific node version and they can just do nvm use? Ok, makes sense.