Reduce number of dependencies

[benmccann]

deep-equal is a terribly heavy library: https://npmgraph.js.org/?q=@turf/helpers

also updates to pnpm 9 and updates the versions tested on the CI accordingly

• Use a meaningful title for the pull request. Include the name of the package modified.
• Have read How To Contribute.
• Run npm test at the sub modules where changes have occurred.
• Run npm run lint to ensure code style at the turf module level.

Submitting a new TurfJS Module.

• Overview description of proposed module.
• Include JSDocs with a basic example.
• Execute ./scripts/generate-readmes to create README.md.
• Add yourself to contributors in package.json using "Full Name <@github Username>".

[smallsaucepan]

Thanks for putting the work into this @benmccann. Removing deep-equal from turf-helpers is currently underway in #2623. Once that's merged would you be happy to pull those changes into here and then we can convert any remaining instance/s (turf-line-overlap only?)?

Also noticed changes to the versions of node we build Turf against and other workflow changes. All for keeping things modern. Could you please make mention in the description though the PR includes this?

[mfedderly]

Did you consider fast-deep-equal at all? I hadn't heard of dequal but it seems plenty popular. I didn't compare final bundle sizes with both, but they're both much smaller than deep-equals

[benmccann]

they both seem pretty good. I don't really have much of a preference for one vs the other

[mfedderly]

I would strongly prefer that the build tooling changes go into another PR. Technically removing supported node versions is a break, but also 16 is EOL'd. We might consider just adding 22 and not removing 16 unless we want to 'sneak' that break into 7.x.

[benmccann]

yeah, makes sense. I just only have pnpm 9 installed on my machine and unfortunately they've dropped support for older node versions

if a maintainer would like to grab any changes you'd like to keep from this PR and send it, please feel free to do so

#2623 is already accomplishing most of what I was aiming for, so I'd also be happy to close this one if that's easier

[mfedderly]

Ok I opened #2631 to remove deep-equals from the other package that had included it. We need to merge #2623 first and then I'll fix #2631 up so that we remove the dependency everywhere. If you feel strongly that we should make the workflow changes lets continue that here. Otherwise feel free to close this.

[benmccann]

thank you!!