[libembind_gen.js] Add missing dependency. NFC (#24124)

Fixes: #24120

Author: sbc100

src/lib/libembind_gen.js

@@ -347,7 +347,7 @@ var LibraryEmbind = {
       out.push('\n};\n\n');
     }
   },
-  $TsPrinter__deps: ['$OptionalType'],
+  $TsPrinter__deps: ['$OptionalType', '$ClassDefinition'],
   $TsPrinter: class {
     constructor(definitions) {
       this.definitions = definitions;

test/other/embind_tsgen_constant_only.cpp

@@ -0,0 +1,9 @@
+#include <emscripten/bind.h>
+
+using namespace emscripten;
+
+int SOME_CONSTANT = 15;
+
+EMSCRIPTEN_BINDINGS(Foo) {
+  constant("SOME_CONSTANT", SOME_CONSTANT);
+}

test/other/embind_tsgen_constant_only.d.ts

@@ -0,0 +1,9 @@
+// TypeScript bindings for emscripten-generated code.  Automatically generated at compile time.
+interface WasmModule {
+}
+
+interface EmbindModule {
+  SOME_CONSTANT: number;
+}
+
+export type MainModule = WasmModule & EmbindModule;

test/test_other.py

@@ -3558,6 +3558,11 @@ def test_embind_tsgen_val(self):
                       '-lembind', '--emit-tsd', 'embind_tsgen_val.d.ts'])
     self.assertExists('embind_tsgen_val.d.ts')
 
+  def test_embind_tsgen_constant_only(self):
+    self.run_process([EMCC, test_file('other/embind_tsgen_constant_only.cpp'),
+                      '-lembind', '--emit-tsd', 'out.d.ts'])
+    self.assertFileContents(test_file('other/embind_tsgen_constant_only.d.ts'), read_file('out.d.ts'))
+
   def test_embind_tsgen_bigint(self):
     args = [EMXX, test_file('other/embind_tsgen_bigint.cpp'), '-lembind', '--emit-tsd', 'embind_tsgen_bigint.d.ts']
     # Check that TypeScript generation fails when code contains bigints but their support is not enabled