Configure typescript parser

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ### Parsing
 
+Added TypeScript parser.
+
 Fixed an issue with parsing integer values in CSS with units,
 e.g. `123px`.
 

README.md

@@ -23,6 +23,7 @@ Difftastic supports the following languages:
 * OCaml
 * Python
 * Rust
+* TypeScript
 
 If a file has an unrecognised extension, difftastic uses a
 line-oriented diff.

build.rs

@@ -70,4 +70,9 @@ fn main() {
         "vendor/tree-sitter-rust-src",
         &["scanner.c"],
     );
+    build(
+        "tree-sitter-typescript",
+        "vendor/tree-sitter-typescript-src/typescript",
+        &["scanner.c"],
+    );
 }

src/tree_sitter_parser.rs

@@ -34,6 +34,7 @@ extern "C" {
     fn tree_sitter_ocaml_interface() -> Language;
     fn tree_sitter_python() -> Language;
     fn tree_sitter_rust() -> Language;
+    fn tree_sitter_typescript() -> Language;
 }
 
 pub fn from_extension(extension: &OsStr) -> Option<TreeSitterConfig> {
@@ -117,6 +118,12 @@ pub fn from_extension(extension: &OsStr) -> Option<TreeSitterConfig> {
                 .collect(),
             open_delimiter_tokens: (vec!["{", "("]).into_iter().collect(),
         }),
+        "ts" => Some(TreeSitterConfig {
+            name: "TypeScript",
+            language: unsafe { tree_sitter_typescript() },
+            atom_nodes: (vec!["string", "template_string"]).into_iter().collect(),
+            open_delimiter_tokens: (vec!["{", "(", "[", "<"]).into_iter().collect(),
+        }),
         _ => None,
     }
 }

vendor/tree-sitter-typescript-src/typescript

@@ -0,0 +1 @@
+../tree-sitter-typescript/typescript/src