Add several bindings for Language

lib/binding_web/binding.js

@@ -646,6 +646,32 @@ class Language {
     return this.fields[fieldId] || null;
   }
 
+  idForNodeType(type, named) {
+    const typeLength = lengthBytesUTF8(type);
+    const typeAddress = C._malloc(typeLength + 1);
+    stringToUTF8(type, typeAddress, typeLength + 1);
+    const result = C._ts_language_symbol_for_name(this[0], typeAddress, typeLength, named);
+    C._free(typeAddress);
+    return result;
+  }
+
+  get nodeTypeCount() {
+    return C._ts_language_symbol_count(this[0]);
+  }
+
+  nodeTypeForId(typeId) {
+    const name = C._ts_language_symbol_name(this[0], typeId);
+    return name ? UTF8ToString(name) : null;
+  }
+
+  nodeTypeIsNamed(typeId) {
+    return C._ts_language_type_is_named_wasm(this[0], typeId) ? true : false;
+  }
+
+  nodeTypeIsVisible(typeId) {
+    return C._ts_language_type_is_visible_wasm(this[0], typeId) ? true : false;
+  }
+
   query(source) {
     const sourceLength = lengthBytesUTF8(source);
     const sourceAddress = C._malloc(sourceLength + 1);