feat: switch to smol-toml for toml parsing

[uncenter]

🔗 Linked issue

N/A

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

The TOML parser currently in use, https://github.com/BinaryMuse/toml-node, only supports the 0.4.0 spec, and therefore has many open issues regarding unsupported features. On the other hand, https://github.com/squirrelchat/smol-toml supports the latest 1.0.0 spec and has zero spec-related issues open. In addition, I believe the performance is significantly better with smol-toml:

• toml
-------------------------------------------------------------------
confbox                       2'060 ns/iter   (1'729 ns … 3'123 ns)
BinaryMuse/toml-node         18'563 ns/iter    (15'625 ns … 340 µs)
sunnyadn/js-toml             18'722 ns/iter    (17'333 ns … 337 µs)
squirrelchat/smol-toml        1'470 ns/iter   (1'409 ns … 1'731 ns)

summary for toml
  confbox
   1.4x slower than squirrelchat/smol-toml
   9.01x faster than BinaryMuse/toml-node
   9.09x faster than sunnyadn/js-toml

If I'm reading that correctly, the current parser is 1.4 times slower than smol-toml!

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

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[pi0]

Didn't know about it thanks!

[uncenter]

Didn't know about it thanks!

Yeah it isn't very well known at all. Thanks for approving!

[uncenter]

Also uh - should we add a stringifyTOML function? Not sure why that only exists for YAML, I'm guessing the other libraries don't support it? smol-toml does I think.

[pi0]

Mainly bundle size. And yaml wasn't easily tree-shakable so thought to expose it when it is there 😆 If you have any usecases for toml serialization in the future we can add it of course.