chore: switch to estree compatible ast tooling

[manuel3108]

Closes #44
Closes #118
Relates #100

This basically duplicates #100 at this point. See #100 for up and downsides of this approach.

I was initially intending to get rid of a lot more dependencies (like the dependencies for handling html) and use svelte-ast-print instead, but this was opening too many issues at the same time. That's why I opted to "only" switch to acorn and esrap here, the rest can be done later.

Relevant PR's / issues

• feat: support indexed access type esrap#18
• feat: add option for quote and indentation styles esrap#19
• fix: support TSModuleDeclaration esrap#44
• fix: support TSImportType esrap#47
• chore: switch to @sveltejs/acorn-typescript esrap#51
• incorrect indentation in some edge cases esrap#45
• comments handled incorrectly in some cases esrap#52

Benefits

• closer to other tools in the svelte ecosystem
• Faster bundling (~33% speed improvement locally from 4s to 3s, probably more with chore: use rolldown #371)
• Smaller bundle (locally 2.6MB vs 3.6MB)
• more consistent formatting than the strange things we sometimes experienced with recast
• we are in full control of the printing, as we can control esrap

Downsides

• Our custom typing for TSEstree as no good public alternative exists, that matches acorns output. We do have @typescript-eslint/types but that was just the one with the smallest pain points. Still exploring other options.

[changeset-bot]

🦋 Changeset detected

Latest commit: c850286

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[pkg-pr-new]

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commit: c850286

[manuel3108]

updated PR description to be more accurate.

[manuel3108]

We are getting close... 🎉 Tests are finally green. Only thing left is to write some code to properly detect quotes and indentation and pass it to esrap correctly. Then we should be good to go.

[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-cli-380-svelte.vercel.app/

[benmccann]

I tested it out and the output looks great!