feat: add generic type declaration support to tree-sitter TypeScript parser

- Added support for parsing generic types with constraints
- Added test case for Dictionary<K extends string | number, V> pattern
- Enhanced TypeScript queries to capture generic type definitions

Signed-off-by: Eric Wheeler <[email protected]>

Author: Eric Wheeler

src/services/tree-sitter/__tests__/parseSourceCodeDefinitions.test.ts

@@ -544,6 +544,49 @@ it("should parse namespace declarations", async function () {
 	expect(result).toContain("isValidPhone")
 })
 
+it("should parse generic type declarations with constraints", async function () {
+	const genericTypeContent = `
+	   /**
+	    * Dictionary interface with constrained key types
+	    */
+	   interface Dictionary<K extends string | number, V> {
+	     /**
+	      * Gets a value by its key
+	      * @param key - The key to look up
+	      * @returns The value associated with the key, or undefined
+	      */
+	     get(key: K): V | undefined;
+	     
+	     /**
+	      * Sets a value for a key
+	      * @param key - The key to set
+	      * @param value - The value to associate with the key
+	      */
+	     set(key: K, value: V): void;
+	     
+	     /**
+	      * Checks if the dictionary contains a key
+	      * @param key - The key to check
+	      */
+	     has(key: K): boolean;
+	   }
+	   
+	   /**
+	    * Type alias with constrained generic parameters
+	    */
+	   type KeyValuePair<K extends string | number, V> = {
+	     key: K;
+	     value: V;
+	   }
+	 `
+	mockedFs.readFile.mockResolvedValue(Buffer.from(genericTypeContent))
+
+	const result = await testParseSourceCodeDefinitions("/test/generic-type.tsx", genericTypeContent)
+	expect(result).toBeDefined()
+	expect(result).toContain("interface Dictionary<K extends string | number, V>")
+	expect(result).toContain("type KeyValuePair<K extends string | number, V>")
+})
+
 describe("parseSourceCodeDefinitions", () => {
 	const testFilePath = "/test/TemperatureControl.tsx"
 

src/services/tree-sitter/queries/typescript.ts

@@ -78,4 +78,14 @@ export default `
 ; Namespace declarations
 (internal_module
   name: (identifier) @name.definition.namespace) @definition.namespace
+
+; Interface declarations with generic type parameters and constraints
+(interface_declaration
+  name: (type_identifier) @name.definition.interface
+  type_parameters: (type_parameters)?) @definition.interface
+
+; Type alias declarations with generic type parameters and constraints
+(type_alias_declaration
+  name: (type_identifier) @name.definition.type
+  type_parameters: (type_parameters)?) @definition.type
 `