Add support for Svelte

[searleser97]

Svelte is getting popular among front end development, I believe adding support for it in rescript would be awesome.

[sairion]

Could you elaborate what kind of support do you expect?

[searleser97]

1. Ability to write type-safe rescript within the script tag, right now we can import the generated js but feels unatural and its also not type safe when using the functions as on:click handler.

2. related to the first request, bindings for common HTML Events Handlers should be written so that something like <button on:click={clickHandler} /> its type safe i.e. clickHandler should have the correct type for "on:click"

3. Svelte uses $: to identify reactive blocks of code so I guess its also necessary to add support for that syntax

Probably a .res file with the same structure as .svelte files can be compiled to a javascript .svelte file.

[ryyppy]

Save to say that this will not be on our priority list. Most focus will go towards an improved version of our JSX, including a new version of rescript-react.