"npm install pug" leads to annoying warnings

[Tilogorn]

Pug Version: 2.0.4

Node Version: v8.17.0

NPM Version: 6.14.2

I know this is not directly related to pug, but maybe you have the power to help anyways.
pug has a dependecy pug-code-gen which has a dependency constantinople which has a dependency babel-types@6.26.0.

This babel-types version depends on core-js@2.6.11 which not only produces an annyoing post-install message (discussed here) but also a deprecated warning by npm.

See the following output:

$ npm install pug
npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.

> core-js@2.6.11 postinstall /home/daniel/src/test/node_modules/core-js
> node -e "try{require('./postinstall')}catch(e){}"

Thank you for using core-js ( https://github.com/zloirock/core-js ) for polyfilling JavaScript standard library!

The project needs your help! Please consider supporting of core-js on Open Collective or Patreon: 
> https://opencollective.com/core-js 
> https://www.patreon.com/zloirock 

Also, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)

I am aware of the fact that pug is just the top dependency in this chain and you cannot/want not change their code base. But for two reasons you might want to overthink your dependencies or be interested to get in the touch with the responsible developers:

1. This is no reputable output for the pug project
2. As my project is just dependent on pug and not on core-js directly, I would have a lot cleaner logs and I would get less questions/complains/mockings by the other devs in my team when they pull and update their clones.

I am willing to create this issue in the underlaying repositories if you think I addressed you wrongly.

[Tilogorn]

As far as I can see, this issue would be resolved with just publishing a new release of pug based on current master. Commit 201b9c7 updated constantinople to 4.0.1 which removed babel-types from the dependencies.

Just tested it by npm install constantinople@4.0.1 manually. No more deprecated warning, no more looking for a good job!

Edit: This issue addresses the same problem: #3205

[Volper212]

Is this project abandoned or what? There's been no commit since December

[Volper212]

https://www.theregister.co.uk/2020/03/26/corejs_maintainer_jailed_code_release/
Oof