feat: setup for tree-sitter syntax highlighting

src/typst.rs

@@ -5,7 +5,7 @@ use tracing::info;
 use typst::{
     Library, LibraryExt, World,
     diag::{FileError, FileResult, PackageError, PackageResult, SourceDiagnostic},
-    foundations::{Bytes, Datetime, Duration},
+    foundations::{Bytes, Datetime, Dict, Duration, Value},
     syntax::{FileId, RootedPath, Source, VirtualPath, VirtualRoot, package::PackageSpec},
     text::{Font, FontBook},
     utils::LazyHash,
@@ -23,7 +23,15 @@ pub struct TypstContext {
 
 impl TypstContext {
     pub fn new(config: AppConfig) -> Self {
+        let mut inputs = Dict::new();
+        if config.syntax_root.is_some() {
+            inputs.insert(
+                "highlight".into(),
+                Value::Func(crate::syntax::highlight_func()),
+            );
+        }
         let library = Library::builder()
+            .with_inputs(inputs)
             .with_features([typst::Feature::Html].into_iter().collect())
             .build();
         let library = LazyHash::new(library);