feat: add Typst syntax and Tinymist defaults

tests/unit/syntax.rs

@@ -648,6 +648,40 @@ fn honey_highlights_declarations_literals_edits_and_markdown_fences() {
     }
 }
 
+#[test]
+fn typst_highlights_markup_code_edits_and_fenced_languages() {
+    let source = "= Heading\n#let message = \"hello é\"\n#let count = 42\n\
+                  #text(message) // note\n*strong* and _emphasis_\n\
+                  ```rust\nfn main() { let n = 7; }\n```";
+    let mut cache = self::cache(source, "main.typ");
+    assert_eq!(cache.language(), Some("Typst"));
+    assert!(!cache.tree.as_ref().unwrap().root_node().has_error());
+    for (row, token, kind) in [
+        (0, "Heading", SyntaxKind::Markup),
+        (1, "let", SyntaxKind::Keyword),
+        (1, "hello é", SyntaxKind::String),
+        (2, "42", SyntaxKind::Number),
+        (3, "text", SyntaxKind::Function),
+        (3, "// note", SyntaxKind::Comment),
+        (4, "strong", SyntaxKind::Markup),
+        (4, "emphasis", SyntaxKind::Markup),
+        (6, "fn", SyntaxKind::Keyword),
+        (6, "7", SyntaxKind::Number),
+    ] {
+        assert_token(&cache, source, row, token, kind);
+    }
+    let edited = source.replace("\"hello é\"", "false");
+    cache.update(&lines(&edited), Some(Path::new("main.typ")), 1);
+    assert_token(&cache, &edited, 1, "false", SyntaxKind::Keyword);
+    assert_fresh(&cache, &edited, "main.typ");
+    for tag in ["typst", "typ"] {
+        let markdown = format!("```{tag}\n#let count = 42\n```");
+        let injected = self::cache(&markdown, "README.md");
+        assert_token(&injected, &markdown, 1, "let", SyntaxKind::Keyword);
+        assert_token(&injected, &markdown, 1, "42", SyntaxKind::Number);
+    }
+}
+
 #[test]
 fn filenames_shebang_save_as_and_tsx_use_actual_grammar_identity() {
     let source = lines("\u{feff}#!/usr/bin/env python3\nreturn 42");