From 857ba60c16e9e78a72d43481f900a48a05989b5d Mon Sep 17 00:00:00 2001
From: jdecroock <decroockjovi@gmail.com>
Date: Thu, 7 Sep 2023 20:35:58 +0200
Subject: [PATCH 1/2] skip comment nodes for placeChild

---
 src/diff/children.js         |  7 ++++++-
 test/browser/hydrate.test.js | 11 ++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/diff/children.js b/src/diff/children.js
index 40a038722f..e03618110b 100644
--- a/src/diff/children.js
+++ b/src/diff/children.js
@@ -367,7 +367,12 @@ function insert(parentVNode, oldDom, parentDom) {
 		oldDom = parentVNode._dom;
 	}
 
-	return oldDom && oldDom.nextSibling;
+	let nextDom = oldDom;
+	do {
+		nextDom = nextDom && nextDom.nextSibling;
+	} while (nextDom != null && nextDom.nodeType === 8);
+
+	return nextDom
 }
 
 /**
diff --git a/test/browser/hydrate.test.js b/test/browser/hydrate.test.js
index 0b23c6f12c..b03c0e2a66 100644
--- a/test/browser/hydrate.test.js
+++ b/test/browser/hydrate.test.js
@@ -50,11 +50,11 @@ describe('hydrate()', () => {
 	beforeEach(() => {
 		scratch = setupScratch();
 		attributesSpy = spyOnElementAttributes();
+		clearLog();
 	});
 
 	afterEach(() => {
 		teardown(scratch);
-		clearLog();
 	});
 
 	it('should reuse existing DOM', () => {
@@ -92,6 +92,7 @@ describe('hydrate()', () => {
 			scratch
 		);
 		expect(scratch.innerHTML).to.equal('<p><i>0</i><b>1</b></p>');
+		expect(getLog()).to.deep.equal(['Comment.remove()']);
 	});
 
 	it('should reuse existing DOM when given components', () => {
@@ -458,5 +459,13 @@ describe('hydrate()', () => {
 		scratch.innerHTML = '<p>hello <!-- c -->foo</p>';
 		hydrate(<p>hello {'foo'}</p>, scratch);
 		expect(scratch.innerHTML).to.equal('<p>hello foo</p>');
+		expect(getLog()).to.deep.equal(['Comment.remove()']);
+	});
+
+	it('should skip over multiple comment nodes', () => {
+		scratch.innerHTML = '<p>hello <!-- a --><!-- b -->foo</p>';
+		hydrate(<p>hello {'foo'}</p>, scratch);
+		expect(scratch.innerHTML).to.equal('<p>hello foo</p>');
+		expect(getLog()).to.deep.equal(['Comment.remove()', 'Comment.remove()']);
 	});
 });

From 0f12d8d184d62e13709f6e88c496f917b56cfb62 Mon Sep 17 00:00:00 2001
From: Jovi De Croock <decroockjovi@gmail.com>
Date: Fri, 10 Nov 2023 08:06:54 +0100
Subject: [PATCH 2/2] golf

---
 src/diff/children.js | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/diff/children.js b/src/diff/children.js
index e03618110b..41112d2161 100644
--- a/src/diff/children.js
+++ b/src/diff/children.js
@@ -367,12 +367,11 @@ function insert(parentVNode, oldDom, parentDom) {
 		oldDom = parentVNode._dom;
 	}
 
-	let nextDom = oldDom;
 	do {
-		nextDom = nextDom && nextDom.nextSibling;
-	} while (nextDom != null && nextDom.nodeType === 8);
+		oldDom = oldDom && oldDom.nextSibling;
+	} while (oldDom != null && oldDom.nodeType === 8);
 
-	return nextDom
+	return oldDom;
 }
 
 /**