Reduce npm cli (npm) dependency count

[AbhiPrasad]

https://www.npmjs.com/package/npm

https://npmgraph.js.org/?q=npm

It's a lot. At current time of creating the issue it's 55 MB / 185 deps.

I think there is opportunity for us to slowly go in and modernize everything.

For example, https://github.com/npm/cacache has a bunch of stale dependabot PRs that would help reduce the dep count.

[AbhiPrasad]

first change I'm looking at is with cacache, specifically eliminating p-map to prevent it from bringing in aggregate-error. This was driven by my desire to improve semantic-release as well: npm/cacache#281

[AbhiPrasad]

Well the cacache change was shot down unfortunately! npm/cacache#281 (comment)

It seems like npm cli changes will be harder than expected! It might not be feasible to switch glob for example as well.

[43081j]

Bumping the engines version would possibly let you get rid of aggregate error at least

I would ask them how likely it is that kind of change would be accepted. And what they intend to do about an esm only dependency

[SuperchupuDev]

Removing util-deprecate from postcss-selector-parser shouldn't hard to do and it would be a small win for npm's dependency count https://npmgraph.js.org/?q=npm#select=exact%3Autil-deprecate%401.0.2
(relevant: postcss/postcss-selector-parser#210)