Add minimal template

[nickserv]

Inspired by #6270, this adds a cra-template-minimal package which uses the bare minimum file structure necessary to function with React (based on the default cra-template). Optional files like tests and assets have been removed so more experienced users can have full control over what's included, while making less assumptions about tech stack.

Test Plan

npx create-react-app my-app --template file:packages/cra-template-minimal

• start displays React App without errors or warnings
• build succeeds and server displays React App without errors or warnings
• test shows no tests, and errors in CI as per Jest's defaults

[mrmckeb]

Thanks @nickmccurdy.

We have definitely talked about doing this before, and it was one of the motivating factors behind CRA templates.

I'm interested in @ianschmitz and @iansu's thoughts on this.

[ianschmitz]

Yeah I know @iansu and I talked about this as well. Seems reasonable!

[nickserv]

For what it's worth, I'm aware that his cra-template-empty template is similar, though I thought it would be a good idea to recreate one based on cra-template and have it maintained in the same repository.

[ianschmitz]

Yeah we had already claimed cra-template-minimal way back before we launched the template feature. So we should be good to go there.

[iansu]

I'd personally like to avoid adding more templates directly to Create React App. We already have issues with maintaining the JavaScript and TypeScript templates. This is exactly why we added external templates.

[nickserv]

Personally I’m more interested in having a template named minimal than having it be in this repo. Would you be interested in moving this into a separate package of yours (or maybe renaming the empty template as I feel minimal is more fitting)? Alternatively if you don’t mind giving me the name I’d be happy to publish this myself.

[iansu]

We actually talked about this a few weeks ago and I was just going to publish the "empty" template under that name for both JavaScript and TypeScript. The "empty" name came out of tweet at some point but I think minimal is a better name.

[nickserv]

Is there anything I could help out with? Like extracting a repo of this PR, renaming your existing repo, etc

[iansu]

I've published a set of minimal templates: https://github.com/iansu/cra-minimal-templates

Thanks for your PR but I'm going to close this now.