Use `{ parse } from 'svelte/compiler'`

[benmccann]

recast is using babel, which is much less used in the Svelte ecosystem, so folks wouldn't generally be as familiar with it

[manuel3108]

Same problem as with using acorn-typescript directly. The discussion about this started in sveltejs/esrap#13 and continued in TyrealHu/acorn-typescript#60.

Also this would likely require different handling for "native" js / ts, or a workaround. The workaround seems quite reasonable on the other hand.

[manuel3108]

Actually, a similar workaround could also be used for html. This would probably significantly bring down our bundle size and make @sveltejs/ast-tooling useless.

But once we have the ast, we will still need to do some serialization afterwards. And then we land on svelte-ast-print which brings us back up sveltejs/esrap#13 closing the circle 😆

[AdrianGonz97]

i've never used recast before this project (only used acorn) and i've really come to hate it. it has many stupid quirks like this: #96 (comment), along with inadequate types (like for loc), so it would be great if we can switch off of it

[benmccann]

Yeah, there are shortcomings of { parse } from 'svelte/compiler' from acorn-typescript for sure. There's an issue open in the Svelte repo about this: sveltejs/svelte#13439

I think the lack of types might not be too much of an issue for finding nodes as we'll mostly be looking for JS nodes?

For serialization, maybe we can do a more surgical approach like svelte-migrate? (I started to prototype this in #74)

[manuel3108]

Relates: svelte-add/svelte-add#507
Relates: svelte-add/svelte-add#193