Use new type pattern instead of enum with one variant

src/assets.rs

@@ -65,7 +65,7 @@ impl HighlightingAssets {
         HighlightingAssets {
             syntax_set_cell: OnceCell::new(),
             serialized_syntax_set,
-            theme_set: ThemeSet::LazyThemeSet(theme_set),
+            theme_set: ThemeSet(theme_set),
             fallback_theme: None,
         }
     }

src/assets/theme_set.rs

@@ -3,22 +3,16 @@ use super::lazy_theme_set::LazyThemeSet;
 /// A collection of syntect themes, similar to [`syntect::highlighting::ThemeSet`].
 /// The themes are deserialized on-demand only.
 #[derive(Debug)]
-pub enum ThemeSet {
-    LazyThemeSet(LazyThemeSet),
-}
+pub struct ThemeSet(pub LazyThemeSet);
 
 impl ThemeSet {
     /// Look up a theme by name
     pub fn get(&self, name: &str) -> Option<&syntect::highlighting::Theme> {
-        match self {
-            ThemeSet::LazyThemeSet(lazy_theme_set) => lazy_theme_set.get(name),
-        }
+        self.0.get(name)
     }
 
     /// An iterator over all theme names
     pub fn theme_names(&self) -> impl Iterator<Item = &str> {
-        match self {
-            ThemeSet::LazyThemeSet(lazy_theme_set) => lazy_theme_set.themes(),
-        }
+        self.0.themes()
     }
 }