Prevent binding from panicking when not in wasm (#278)

* Prevent binding from panicking when not in wasm

* Fix cfg attributes

packages/sycamore-macro/src/template/attributes.rs

@@ -310,6 +310,7 @@ impl ToTokens for Attribute {
                 tokens.extend(quote_spanned! { expr_span=> {
                     let signal: ::sycamore::reactive::Signal<#value_ty> = #expr;
 
+                    #[cfg(target_arch = "wasm32")]
                     ::sycamore::reactive::create_effect({
                         let signal = ::std::clone::Clone::clone(&signal);
                         let __el = ::std::clone::Clone::clone(&__el);

packages/sycamore/tests/ssr/main.rs

@@ -98,3 +98,15 @@ fn indexed() {
     let actual = sycamore::render_to_string(|| node.clone());
     assert_eq!(actual, "<ul><li>2</li><li>3</li></ul>");
 }
+
+#[test]
+fn bind() {
+    let signal = Signal::new(String::new());
+
+    let node = template! {
+        input(bind:value=signal)
+    };
+
+    let actual = sycamore::render_to_string(|| node);
+    assert_eq!(actual, "<input/>");
+}