From 76d05e065cc1cc9534dc53cc704d4b8d02511408 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Wed, 21 May 2025 13:13:34 -0400
Subject: [PATCH] make process_children unaware of templating mode - the less
 visitors know about this, the better

---
 .../3-transform/client/transform-template/to-functions.js | 7 +++----
 .../3-transform/client/transform-template/to-string.js    | 2 +-
 .../src/compiler/phases/3-transform/client/types.d.ts     | 2 +-
 .../phases/3-transform/client/visitors/shared/fragment.js | 8 ++------
 4 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-functions.js b/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-functions.js
index 3b330e9e27..f89e82e11b 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-functions.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-functions.js
@@ -28,7 +28,6 @@ export function template_to_functions(items) {
 	}
 
 	for (let instruction of items) {
-		const args = instruction.args ?? [];
 		const last_element_stack = /** @type {Element} */ (elements_stack.at(-1));
 		/**
 		 * @param {Expression | null | void} value
@@ -56,7 +55,7 @@ export function template_to_functions(items) {
 				push(last_current_element);
 				break;
 			case 'create_text':
-				push(create_text(last_element_stack, args[0]));
+				push(create_text(last_element_stack, instruction.nodes.map((node) => node.data).join('')));
 				break;
 			case 'create_anchor':
 				push(create_anchor(last_element_stack, instruction.data));
@@ -138,13 +137,13 @@ function create_text(element, value) {
  *
  * @param {Element} element
  * @param {string} prop
- * @param {string} value
+ * @param {string | undefined} value
  */
 function set_prop(element, prop, value) {
 	const p = get_or_create_prop(element, 'p', b.object([]));
 
 	if (prop === 'is') {
-		element.properties.push(b.prop('init', b.id(prop), b.literal(value)));
+		element.properties.push(b.prop('init', b.id(prop), b.literal(/** @type {string} */ (value))));
 		return;
 	}
 
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-string.js b/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-string.js
index 627e3e1b96..80c9770378 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-string.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/transform-template/to-string.js
@@ -55,7 +55,7 @@ export function template_to_string(items) {
 			case 'create_text':
 				insert({
 					kind: 'text',
-					value: instruction.args[0]
+					value: instruction.nodes.map((node) => node.raw).join('')
 				});
 				break;
 			case 'create_anchor':
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/types.d.ts b/packages/svelte/src/compiler/phases/3-transform/client/types.d.ts
index 39d0ac3eeb..06db1b381a 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/types.d.ts
+++ b/packages/svelte/src/compiler/phases/3-transform/client/types.d.ts
@@ -43,7 +43,7 @@ type TemplateOperations = Array<
 	  }
 	| {
 			kind: 'create_text';
-			args: string[];
+			nodes: AST.Text[];
 	  }
 	| {
 			kind: 'create_anchor';
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js
index 6746dad31a..519cc062bb 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js
@@ -66,17 +66,13 @@ export function process_children(nodes, initial, is_element, { visit, state }) {
 			skipped += 1;
 			state.template.push({
 				kind: 'create_text',
-				args: [
-					sequence
-						.map((node) => (state.is_functional_template_mode ? node.data : node.raw))
-						.join('')
-				]
+				nodes: sequence
 			});
 			return;
 		}
 		state.template.push({
 			kind: 'create_text',
-			args: [' ']
+			nodes: [{ type: 'Text', data: ' ', raw: ' ', start: -1, end: -1 }]
 		});
 
 		const { has_state, value } = build_template_chunk(sequence, visit, state);