Fix playwright tests (#2695)

packages/ssr/src/lib.rs

@@ -17,14 +17,7 @@ pub use crate::renderer::Renderer;
 ///
 /// For advanced rendering, create a new `SsrRender`.
 pub fn render_element(element: Element) -> String {
-    fn lazy_app(props: Element) -> Element {
-        props
-    }
-
-    let mut dom = VirtualDom::new_with_props(lazy_app, element);
-    dom.rebuild_in_place();
-
-    Renderer::new().render(&dom)
+    Renderer::new().render_element(element)
 }
 
 /// A convenience function to render an existing VirtualDom to a string

packages/ssr/src/renderer.rs

@@ -62,6 +62,27 @@ impl Renderer {
         self.render_scope(buf, dom, ScopeId::ROOT)
     }
 
+    /// Render an element to a string
+    pub fn render_element(&mut self, element: Element) -> String {
+        let mut buf = String::new();
+        self.render_element_to(&mut buf, element).unwrap();
+        buf
+    }
+
+    /// Render an element to the buffer
+    pub fn render_element_to<W: Write + ?Sized>(
+        &mut self,
+        buf: &mut W,
+        element: Element,
+    ) -> std::fmt::Result {
+        fn lazy_app(props: Element) -> Element {
+            props
+        }
+        let mut dom = VirtualDom::new_with_props(lazy_app, element);
+        dom.rebuild_in_place();
+        self.render_to(buf, &dom)
+    }
+
     /// Reset the renderer hydration state
     pub fn reset_hydration(&mut self) {
         self.dynamic_node_id = 0;