withastro · matthewp · Feb 6, 2026 · Feb 2, 2026 · Feb 5, 2026 · Feb 6, 2026
diff --git a/.changeset/fix-trailing-whitespace.md b/.changeset/fix-trailing-whitespace.md
@@ -0,0 +1,5 @@
+---
+"@astrojs/compiler": patch
+---
+
+Fixes a bug where trailing whitespaces were preserved before `<style>` tags after transformation, in certain cases. Now trailing whitespaces are correctly removed.
diff --git a/internal/printer/__printer_js__/Mixed_style_siblings.snap b/internal/printer/__printer_js__/Mixed_style_siblings.snap
@@ -42,7 +42,6 @@ const $$Component = $$createComponent(($$result, $$props, $$slots) => {
 return $$render`<head>
 
 
-
 ${$$renderHead($$result)}</head>
 <div class="astro-lasntlja"></div>`;
 }, undefined, undefined);

diff --git a/internal/printer/__printer_js__/React_framework_example.snap b/internal/printer/__printer_js__/React_framework_example.snap
@@ -100,7 +100,6 @@ return $$render`<html lang="en" class="astro-hmnnhvcq">
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width">
     <link rel="icon" type="image/x-icon" href="/favicon.ico">
-
   ${$$renderHead($$result)}</head>
   <body class="astro-hmnnhvcq">
     <main class="astro-hmnnhvcq">

diff --git a/internal/transform/transform.go b/internal/transform/transform.go
@@ -137,10 +137,39 @@ func ExtractStyles(doc *astro.Node, opts *TransformOptions) {
 	})
 	// Important! Remove styles from original location *after* walking the doc
 	for _, style := range doc.Styles {
-		style.Parent.RemoveChild(style)
+		removeNodeWithTrailingWhitespace(style)
 	}
 }
 
+// removeNodeWithTrailingWhitespace removes a node and also removes any preceding
+// whitespace-only text node if it would become trailing whitespace after removal.
+// This prevents orphaned whitespace when extracting style/script tags.
+func removeNodeWithTrailingWhitespace(n *astro.Node) {
+	prev := n.PrevSibling
+	next := n.NextSibling
+
+	// Check if we should remove preceding whitespace:
+	// 1. There is a previous sibling
+	// 2. It's a whitespace-only text node
+	// 3. After removing n, this whitespace would be trailing (no more non-whitespace siblings after)
+	if prev != nil && prev.Type == astro.TextNode && strings.TrimSpace(prev.Data) == "" {
+		// Check if there are any non-whitespace siblings after n
+		hasNonWhitespaceAfter := false
+		for sib := next; sib != nil; sib = sib.NextSibling {
+			if sib.Type != astro.TextNode || strings.TrimSpace(sib.Data) != "" {
+				hasNonWhitespaceAfter = true
+				break
+			}
+		}
+		// If no non-whitespace content follows, remove the preceding whitespace
+		if !hasNonWhitespaceAfter {
+			prev.Parent.RemoveChild(prev)
+		}
+	}
+
+	n.Parent.RemoveChild(n)
+}
+
 func NormalizeSetDirectives(doc *astro.Node, h *handler.Handler) {
 	var nodes []*astro.Node
 	var directives []*astro.Attribute

diff --git a/internal/transform/transform_test.go b/internal/transform/transform_test.go
@@ -250,6 +250,7 @@ func TestFullTransform(t *testing.T) {
 			source: `<Component><h1>Hello world</h1></Component><style>:root{}</style>`,
 			want:   `<Component><h1>Hello world</h1></Component>`,
 		},
+
 		{
 			name:   "Component before html I",
 			source: `<Navigation /><html><body><h1>Astro</h1></body></html>`,
@@ -339,7 +340,13 @@ func TestTransformTrailingSpace(t *testing.T) {
 			source: "<html><body>\n\n\n</body></html>",
 			want:   "<html><body>\n\n\n</body></html>",
 		},
+		{
+			name:   "trailing whitespace before style is removed",
+			source: "<html><head></head><body><slot />\n<style>div { color: red; }</style></body></html>",
+			want:   "<html><head></head><body><slot></slot></body></html>",
+		},
 	}
+
 	var b strings.Builder
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {