Issue with ojs_define and rendering PDF

[Eline2020]

I am trying to generate a PDF file using Quarto, but I am getting an error when I try to use ojs_define. When ojs_define is commented out the PDF renders without any issues. The error message is the following:

running xelatex - 1
This is XeTeX, Version 3.141592653-2.6-0.999994 (TeX Live 2022) (preloaded format=xelatex)
restricted \write18 enabled.
entering extended mode

updating tlmgr

updating existing packages

compilation failed- error
LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type H for immediate help.
...

l.118 <
script type="ojs-define">

I am using R 4.2.1 on Windows and I am using Visual Studio Code, but when I tried in RStudio I got the same error.

For a minimal reproducible example I have the following files:

_quarto.yml

project:
  type: book

book:
  title: "Title"
  author: "Author"
  date: "2022-09-07"
  chapters:
    - index.qmd
    - example.qmd

format:
  pdf:
    documentclass: scrreprt

index.qmd (was required to make a book, only includes # Index)

example.qmd

# Test

```{r}
#| output: false
df <- data.frame(
    id = c(1, 2, 3, 4, 5),
    value = c(10, 20, 30, 40, 50)
)

ojs_define(df_ojs = df)
```#end R block

I'm really not sure what the issue is, so I would love some help!

[cscheid]

This is a bug, because we shouldn't be emitting this bad error message.

But I think you're expecting ojs_define to work in PDF formats. It won't, because Observable is a javascript library, and so it fundamentally requires HTML output.