From 5c63cc04b2af8e132f38fb8a7cc26d6f7a14ddd7 Mon Sep 17 00:00:00 2001
From: Marvin Hagemeister <hello@marvinh.dev>
Date: Mon, 8 Apr 2024 22:32:48 +0200
Subject: [PATCH 1/2] fix: top level fragment detection with jsx precompile

---
 src/index.js         |  5 ++++-
 test/render.test.jsx | 13 +++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index 6be1784..903216c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -435,7 +435,10 @@ function _renderToString(
 		// When a component returns a Fragment node we flatten it in core, so we
 		// need to mirror that logic here too
 		let isTopLevelFragment =
-			rendered != null && rendered.type === Fragment && rendered.key == null;
+			rendered != null &&
+			rendered.type === Fragment &&
+			rendered.key == null &&
+			rendered.props.tpl == null;
 		rendered = isTopLevelFragment ? rendered.props.children : rendered;
 
 		const renderChildren = () =>
diff --git a/test/render.test.jsx b/test/render.test.jsx
index 8d099b7..588c86f 100644
--- a/test/render.test.jsx
+++ b/test/render.test.jsx
@@ -1686,5 +1686,18 @@ describe('render', () => {
 				'<div>foo<span>bar</span><p>foo</p><p>bar</p></div>'
 			);
 		});
+
+		it('should bypass top level fragment detection', () => {
+			function Foo(props) {
+				return props.children;
+			}
+			let vnode = (
+				<Foo>
+					<Fragment tpl={['<div>foo', '</div>']} exprs={[<span>bar</span>]} />
+				</Foo>
+			);
+			let rendered = render(vnode);
+			expect(rendered).to.equal('<div>foo<span>bar</span></div>');
+		});
 	});
 });

From 7bc77a3cb859069cddf0befc9bd247b2a137f10a Mon Sep 17 00:00:00 2001
From: Marvin Hagemeister <hello@marvinh.dev>
Date: Mon, 8 Apr 2024 22:34:00 +0200
Subject: [PATCH 2/2] chore: add changeset

---
 .changeset/nine-buckets-pull.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/nine-buckets-pull.md

diff --git a/.changeset/nine-buckets-pull.md b/.changeset/nine-buckets-pull.md
new file mode 100644
index 0000000..0b47385
--- /dev/null
+++ b/.changeset/nine-buckets-pull.md
@@ -0,0 +1,5 @@
+---
+'preact-render-to-string': patch
+---
+
+Fix JSX template being detected as a top level Fragment when Deno's jsx `precompile` option is used