From e6122d9a9e071891a15c69294786c4bbe125ffd5 Mon Sep 17 00:00:00 2001
From: baseballyama <xydybaseball@gmail.com>
Date: Tue, 23 Sep 2025 11:17:00 +0900
Subject: [PATCH] fix(valid-compile): use compiler options if provided

---
 .changeset/late-waves-wonder.md                       |  5 +++++
 .../src/shared/svelte-compile-warns/index.ts          |  1 +
 .../invalid/compiler-options-config.json              | 11 +++++++++++
 .../invalid/compiler-options-errors.yaml              |  8 ++++++++
 .../invalid/compiler-options-input.svelte             |  9 +++++++++
 .../invalid/compiler-options-requirements.json        |  3 +++
 6 files changed, 37 insertions(+)
 create mode 100644 .changeset/late-waves-wonder.md
 create mode 100644 packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-config.json
 create mode 100644 packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-errors.yaml
 create mode 100644 packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-input.svelte
 create mode 100644 packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-requirements.json

diff --git a/.changeset/late-waves-wonder.md b/.changeset/late-waves-wonder.md
new file mode 100644
index 000000000..82aa9d500
--- /dev/null
+++ b/.changeset/late-waves-wonder.md
@@ -0,0 +1,5 @@
+---
+'eslint-plugin-svelte': patch
+---
+
+fix(valid-compile): use compiler options if provided
diff --git a/packages/eslint-plugin-svelte/src/shared/svelte-compile-warns/index.ts b/packages/eslint-plugin-svelte/src/shared/svelte-compile-warns/index.ts
index c77e5ca62..032c627ae 100644
--- a/packages/eslint-plugin-svelte/src/shared/svelte-compile-warns/index.ts
+++ b/packages/eslint-plugin-svelte/src/shared/svelte-compile-warns/index.ts
@@ -407,6 +407,7 @@ function getWarningsFromCode(
 } {
 	try {
 		const result = compiler.compile(code, {
+			...context.sourceCode.parserServices.svelteParseContext?.svelteConfig?.compilerOptions,
 			generate: false,
 			...(isCustomElement(context.sourceCode.ast) ? { customElement: true } : {})
 		});
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-config.json b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-config.json
new file mode 100644
index 000000000..e41bbde2b
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-config.json
@@ -0,0 +1,11 @@
+{
+	"languageOptions": {
+		"parserOptions": {
+			"svelteConfig": {
+				"compilerOptions": {
+					"runes": true
+				}
+			}
+		}
+	}
+}
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-errors.yaml
new file mode 100644
index 000000000..2cc22ad96
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-errors.yaml
@@ -0,0 +1,8 @@
+- message: >-
+    `count` is updated, but is not declared with `$state(...)`. Changing its
+    value will not correctly trigger updates
+
+    https://svelte.dev/e/non_reactive_update(non_reactive_update)
+  line: 2
+  column: 6
+  suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-input.svelte
new file mode 100644
index 000000000..231a6fdc8
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-input.svelte
@@ -0,0 +1,9 @@
+<script lang="ts">
+	let count = 0;
+	function increment() {
+		count += 1;
+	}
+</script>
+
+{count}<br />
+<button onclick={increment} type="button">Increment</button>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-requirements.json b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-requirements.json
new file mode 100644
index 000000000..498661308
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/valid-compile/invalid/compiler-options-requirements.json
@@ -0,0 +1,3 @@
+{
+	"svelte": ">=5.0.0"
+}