Use --weak-refs and --reference-types with wasm-bindgen

Author: daxpedda

src/wasm_bindgen.rs

@@ -15,7 +15,7 @@ pub fn generate(options: &Options, wasm_file: &Path) -> Result<WasmBindgenOutput
     debug!("running wasm-bindgen...");
     let start = std::time::Instant::now();
     let mut bindgen = wasm_bindgen_cli_support::Bindgen::new();
-    bindgen.input_path(wasm_file).typescript(false);
+    bindgen.input_path(wasm_file).typescript(false).weak_refs(true).reference_types(true);
 
     if options.no_module {
         bindgen.no_modules(true)?;