lua,typst - do not crash if float.content is nil

news/changelog-1.8.md

@@ -33,6 +33,7 @@ All changes included in 1.8:
 - ([#12554](https://github.com/quarto-dev/quarto-cli/pull/12554)): CSS properties `font-weight` and `font-style` are translated to Typst `text` properties.
 - ([#12695](https://github.com/quarto-dev/quarto-cli/issues/12695)): Resolve Typst `font-paths` that start with `/` relative to project root.
 - ([#12739](https://github.com/quarto-dev/quarto-cli/pull/12739)): Remove unused variable `heading-background-color` and `heading-decoration` from Typst's templates. They are leftover from previous change, and not part of Brand.yml schema for typography of headings.
+- ([#12815](https://github.com/quarto-dev/quarto-cli/issues/12815)): Do not crash when floats have no content.
 
 ### `beamer`
 

src/resources/filters/quarto-post/typst.lua

@@ -32,6 +32,9 @@ function render_typst()
     },
     {
       FloatRefTarget = function(float)
+        if float.content == nil then
+          return float
+        end
         if float.content.t == "Table" then
           -- this needs the fix from https://github.com/jgm/pandoc/pulls/9778
           float.content.classes:insert("typst-no-figure")

tests/docs/smoke-all/2025/05/23/issue-12815.qmd

@@ -0,0 +1,10 @@
+---
+title: "Untitled"
+format: typst
+---
+
+
+::: {#tbl-mtcars .cell tbl-cap='Head of mtcars'}
+
+:::
+