From e90ded677e64f342067efe18aae38000e8ce0849 Mon Sep 17 00:00:00 2001
From: Paolo Ricciuti <ricciutipaolo@gmail.com>
Date: Tue, 14 Nov 2023 22:55:33 +0100
Subject: [PATCH] fix: allow svelte:self in snippets (#9439)

* fix: allow svelte:self in snippets

* Create funny-wombats-argue.md
---
 .changeset/funny-wombats-argue.md                            | 5 +++++
 packages/svelte/src/compiler/errors.js                       | 2 +-
 packages/svelte/src/compiler/phases/1-parse/state/element.js | 3 ++-
 .../tests/compiler-errors/samples/self-reference/_config.js  | 2 +-
 4 files changed, 9 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/funny-wombats-argue.md

diff --git a/.changeset/funny-wombats-argue.md b/.changeset/funny-wombats-argue.md
new file mode 100644
index 0000000000..2d5a707a17
--- /dev/null
+++ b/.changeset/funny-wombats-argue.md
@@ -0,0 +1,5 @@
+---
+"svelte": patch
+---
+
+fix: allow svelte:self in snippets
diff --git a/packages/svelte/src/compiler/errors.js b/packages/svelte/src/compiler/errors.js
index 51e0644c4c..615123088f 100644
--- a/packages/svelte/src/compiler/errors.js
+++ b/packages/svelte/src/compiler/errors.js
@@ -141,7 +141,7 @@ const special_elements = {
 	/** @param {string} name */
 	'duplicate-svelte-element': (name) => `A component can only have one <${name}> element`,
 	'invalid-self-placement': () =>
-		`<svelte:self> components can only exist inside {#if} blocks, {#each} blocks, or slots passed to components`,
+		`<svelte:self> components can only exist inside {#if} blocks, {#each} blocks, {#snippet} blocks or slots passed to components`,
 	'missing-svelte-element-definition': () => `<svelte:element> must have a 'this' attribute`,
 	'missing-svelte-component-definition': () => `<svelte:component> must have a 'this' attribute`,
 	'invalid-svelte-element-definition': () => `Invalid element definition — must be an {expression}`,
diff --git a/packages/svelte/src/compiler/phases/1-parse/state/element.js b/packages/svelte/src/compiler/phases/1-parse/state/element.js
index 51eac9ca53..d193aeaeb6 100644
--- a/packages/svelte/src/compiler/phases/1-parse/state/element.js
+++ b/packages/svelte/src/compiler/phases/1-parse/state/element.js
@@ -333,7 +333,8 @@ function read_tag_name(parser) {
 			if (
 				fragment.type === 'IfBlock' ||
 				fragment.type === 'EachBlock' ||
-				fragment.type === 'Component'
+				fragment.type === 'Component' ||
+				fragment.type === 'SnippetBlock'
 			) {
 				legal = true;
 				break;
diff --git a/packages/svelte/tests/compiler-errors/samples/self-reference/_config.js b/packages/svelte/tests/compiler-errors/samples/self-reference/_config.js
index c1793c3043..5f5980b7ed 100644
--- a/packages/svelte/tests/compiler-errors/samples/self-reference/_config.js
+++ b/packages/svelte/tests/compiler-errors/samples/self-reference/_config.js
@@ -4,7 +4,7 @@ export default test({
 	error: {
 		code: 'invalid-self-placement',
 		message:
-			'<svelte:self> components can only exist inside {#if} blocks, {#each} blocks, or slots passed to components',
+			'<svelte:self> components can only exist inside {#if} blocks, {#each} blocks,, {#snippet} blocks or slots passed to components',
 		position: [1, 1]
 	}
 });