Could the 'Quarto: Format Cell' command work for Observable?

[jack-davison]

I understand that the VSCode/Positron extension can style Py/R code, but not OJS. It'd be really helpful if it could do OJS too! e.g., turn

```{ojs}
Plot.plot({
marks: [
        Plot.dot(transpose(iris), {x: "Sepal.Length", y: "Petal.Width"})
        ]
})

into 

````qmd
```{ojs}
Plot.plot({
    marks: [
        Plot.dot(transpose(iris), {x: "Sepal.Length", y: "Petal.Width"})
    ]
})

Directed from https://github.com/posit-dev/positron/discussions/4196. Original message on the Positron repo from Julia Silge:

> The solution to this will need to come from the Quarto extension, since it provides formatting for `.qmd` files. They have a command to format a cell:
> 
> ![Screenshot 2024-07-31 at 12 42 07 PM](https://private-user-images.githubusercontent.com/12505835/353953752-2ee220c3-5b06-48b4-a002-accd12da9e9d.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.LWfBxdBBAXvtQkFRCwcgj0ygRGK3G4NmT-HxSGQQhlY)
> 
> Unfortunately though, that does not yet work for Observable chunks (it _does_ work for R and Python). Can you open an issue on the repo for the Quarto extension that you would like the "Quarto: Format Cell" command to work for Observable? https://github.com/quarto-dev/quarto/issues

Cheers,
Jack

[cscheid]

This will be a bit hard for us to do, because there's no standard formatter for the OJS syntax, afaict. OJS is not JS (see, eg, the mutable keyword), and so we'd have to wait for other developers to create appropriate tooling first.