Treat predefined_type as an atom in TypeScript

Currently it contains a nested string node, even though it's a fixed
set of known types. This was preventing us from applying good syntax
highlighting.

This was particularly noticeable with `string`, which wasn't
previously highlighted as a type.

CHANGELOG.md

@@ -23,6 +23,8 @@ constituents.
 Fixed an issue with unwanted underlines with textual diffing when
 DFT_GRAPH_LIMIT is reached.
 
+Improved syntax highlighintg for predefined types in TypeScript.
+
 ## 0.40 (released 28th December 2022)
 
 ### Diffing

sample_files/compare.expected

@@ -202,6 +202,9 @@ b142169ae6ac08ef64d0cf67a2e66f5b  -
 sample_files/toml_before.toml sample_files/toml_after.toml
 08dad07d7c85b807094b5b4cf065cda9  -
 
+sample_files/typescript_before.ts sample_files/typescript_after.ts
+06648ebbe63a69e29de54b541fa2b3b8  -
+
 sample_files/typing_before.ml sample_files/typing_after.ml
 544c31c1d6651437ba9ed3a3a3524d76  -
 

sample_files/typescript_after.ts

@@ -0,0 +1,5 @@
+type Symbol = {
+  kind: "symbol";
+  name: string;
+  items: string[];
+};

sample_files/typescript_before.ts

@@ -0,0 +1,4 @@
+type Symbol = {
+  kind: "symbol";
+  items: string[];
+};

src/parse/tree_sitter_parser.rs

@@ -859,7 +859,7 @@ pub fn from_language(language: guess::Language) -> TreeSitterConfig {
             let language = unsafe { tree_sitter_typescript() };
             TreeSitterConfig {
                 language,
-                atom_nodes: vec!["string", "template_string", "regex"]
+                atom_nodes: vec!["string", "template_string", "regex", "predefined_type"]
                     .into_iter()
                     .collect(),
                 delimiter_tokens: vec![("{", "}"), ("(", ")"), ("[", "]"), ("<", ">")],