Improve MainModuleFactory type emitted by create_tsd

test/other/embind_tsgen_ignore_2.d.ts

@@ -151,4 +151,4 @@ interface EmbindModule {
 }
 
 export type MainModule = WasmModule & EmbindModule;
-export default function MainModuleFactory (options?: unknown): Promise<MainModule>;
+export default function MainModuleFactory (moduleOverrides?: Partial<MainModule>): Promise<MainModule>;

test/other/embind_tsgen_module.d.ts

@@ -152,4 +152,4 @@ interface EmbindModule {
 }
 
 export type MainModule = WasmModule & EmbindModule;
-export default function MainModuleFactory (options?: unknown): Promise<MainModule>;
+export default function MainModuleFactory (moduleOverrides?: Partial<MainModule>): Promise<MainModule>;

test/other/test_emit_tsd.d.ts

@@ -19,4 +19,4 @@ interface WasmModule {
 }
 
 export type MainModule = WasmModule & typeof RuntimeExports;
-export default function MainModuleFactory (options?: unknown): Promise<MainModule>;
+export default function MainModuleFactory (moduleOverrides?: Partial<MainModule>): Promise<MainModule>;

test/other/test_emit_tsd_sync.d.ts

@@ -6,4 +6,4 @@ interface WasmModule {
 }
 
 export type MainModule = WasmModule;
-export default function MainModuleFactory (options?: unknown): MainModule;
+export default function MainModuleFactory (moduleOverrides?: Partial<MainModule>): MainModule;

tools/emscripten.py

@@ -679,7 +679,7 @@ def create_tsd(metadata, embind_tsd):
     return_type = 'MainModule'
     if settings.WASM_ASYNC_COMPILATION:
       return_type = f'Promise<{return_type}>'
-    out += f'export default function MainModuleFactory (options?: unknown): {return_type};\n'
+    out += f'export default function MainModuleFactory (moduleOverrides?: Partial<MainModule>): {return_type};\n'
   return out