I can't find any instructions in the documentation, could you provide a link to detailed instructions?

I can't find any instructions in the documentation, could you provide a link to detailed instructions?

What do you mean? Just write package.yaml as you would package.json, but with YAML syntax. For example:

# package.yaml
name: package-name
version: 1.2.3
private: true
dependencies:
  foo: 3.2.1

And since OP wanted to use yaml anchors:

# package.yaml
dependencies:
  '@dcloudio/uni-app': &uni-app 3.0.0-alpha-4040520250107001
  '@dcloudio/uni-app-harmony': *uni-app
  '@dcloudio/uni-app-plus': *uni-app
  '@dcloudio/uni-automator': *uni-app
  '@dcloudio/uni-cli-shared': *uni-app
  '@dcloudio/uni-components': *uni-app
  '@dcloudio/uni-h5': *uni-app

(the above was copy-pasted from OP's comment)

Thanks for the example, I never knew I could use package.yaml.

I'd like to add the possibility of loading catalogs from configurational dependencies. In that case, it will make sense to have catalogs support in single-package projects.

I'd like to add the possibility of loading catalogs from configurational dependencies. In that case, it will make sense to have catalogs support in single-package projects.

Our checking logic can remain as it is, there is no need to modify it?