diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-at-html-tags/invalid/html-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-at-html-tags/invalid/html-errors.yaml
index d22941186..fc00037ac 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-at-html-tags/invalid/html-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-at-html-tags/invalid/html-errors.yaml
@@ -1,4 +1,4 @@
-- message: '`{@html}` can lead to XSS attack.'
+- message: "`{@html}` can lead to XSS attack."
   line: 5
   column: 4
   suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/bool-slot01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/bool-slot01-errors.yaml
index e3cfa2b30..0f81e0a26 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/bool-slot01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/bool-slot01-errors.yaml
@@ -1,4 +1,4 @@
-- message: '`<slot>` name requires a value.'
+- message: "`<slot>` name requires a value."
   line: 1
   column: 7
   suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/literal-slot01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/literal-slot01-errors.yaml
index 493f1c8a9..1a539840e 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/literal-slot01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/literal-slot01-errors.yaml
@@ -1,4 +1,4 @@
-- message: '`<slot>` name cannot be dynamic.'
+- message: "`<slot>` name cannot be dynamic."
   line: 1
   column: 12
   suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/multi-report01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/multi-report01-errors.yaml
index b44c7a3c6..8f50404d7 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/multi-report01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/multi-report01-errors.yaml
@@ -1,12 +1,12 @@
-- message: '`<slot>` name cannot be dynamic.'
+- message: "`<slot>` name cannot be dynamic."
   line: 6
   column: 12
   suggestions: null
-- message: '`<slot>` name cannot be dynamic.'
+- message: "`<slot>` name cannot be dynamic."
   line: 7
   column: 12
   suggestions: null
-- message: '`<slot>` name cannot be dynamic.'
+- message: "`<slot>` name cannot be dynamic."
   line: 8
   column: 12
   suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/recursive-loop01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/recursive-loop01-errors.yaml
index a625cd83b..63dca9a63 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/recursive-loop01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/recursive-loop01-errors.yaml
@@ -1,4 +1,4 @@
-- message: '`<slot>` name cannot be dynamic.'
+- message: "`<slot>` name cannot be dynamic."
   line: 6
   column: 12
   suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/var-slot01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/var-slot01-errors.yaml
index 6481b5513..afd6c951e 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/var-slot01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-dynamic-slot-name/invalid/var-slot01-errors.yaml
@@ -1,4 +1,4 @@
-- message: '`<slot>` name cannot be dynamic.'
+- message: "`<slot>` name cannot be dynamic."
   line: 5
   column: 12
   suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/fixer-test01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/fixer-test01-errors.yaml
index 2bc7656fe..845b9c862 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/fixer-test01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/fixer-test01-errors.yaml
@@ -2,7 +2,7 @@
   line: 5
   column: 8
   suggestions:
-    - desc: 'Using destructuring like $: ({ $foo } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ $foo } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -20,7 +20,7 @@
   line: 6
   column: 7
   suggestions:
-    - desc: 'Using destructuring like $: ({ bar } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ bar } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -38,7 +38,7 @@
   line: 7
   column: 7
   suggestions:
-    - desc: 'Using destructuring like $: ({ baz } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ baz } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -56,7 +56,7 @@
   line: 8
   column: 7
   suggestions:
-    - desc: 'Using destructuring like $: ({ var } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ var } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -74,7 +74,7 @@
   line: 9
   column: 8
   suggestions:
-    - desc: 'Using destructuring like $: ({ null } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ null } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -92,7 +92,7 @@
   line: 10
   column: 13
   suggestions:
-    - desc: 'Using destructuring like $: ({ undefined } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ undefined } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member01-errors.yaml
index 1c3b81651..50db5d073 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member01-errors.yaml
@@ -2,7 +2,7 @@
   line: 5
   column: 11
   suggestions:
-    - desc: 'Using destructuring like $: ({ foo } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ foo } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -16,7 +16,7 @@
   line: 6
   column: 11
   suggestions:
-    - desc: 'Using destructuring like $: ({ foo } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ foo } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member02-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member02-errors.yaml
index d258ce3e1..ca80e933b 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member02-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member02-errors.yaml
@@ -19,7 +19,7 @@
 
         baz.foo: {bbb.foo}
         baz.bar: {$store.baz.bar}
-    - desc: 'Using destructuring like $: ({ foo } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ foo } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -58,7 +58,7 @@
 
         baz.foo: {bbb.foo}
         baz.bar: {$store.baz.bar}
-    - desc: 'Using destructuring like $: ({ bar } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ bar } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -97,7 +97,7 @@
 
         baz.foo: {bbb.foo}
         baz.bar: {bbb.bar}
-    - desc: 'Using destructuring like $: ({ baz } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ baz } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member03-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member03-errors.yaml
index 985e363a2..61e9b2798 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member03-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/member03-errors.yaml
@@ -2,7 +2,7 @@
   line: 9
   column: 11
   suggestions:
-    - desc: 'Using destructuring like $: ({ foo } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ foo } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -25,7 +25,7 @@
   line: 12
   column: 11
   suggestions:
-    - desc: 'Using destructuring like $: ({ bar } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ bar } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
@@ -48,7 +48,7 @@
   line: 15
   column: 11
   suggestions:
-    - desc: 'Using destructuring like $: ({ baz } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ baz } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test01-errors.yaml
index 5456e1c32..027d90368 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test01-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test01-errors.yaml
@@ -2,7 +2,7 @@
   line: 4
   column: 2
   suggestions:
-    - desc: 'Using destructuring like $: ({ bar } = $foo); will run faster'
+    - desc: "Using destructuring like $: ({ bar } = $foo); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test03-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test03-errors.yaml
index ac98b7da3..1e2522f7e 100644
--- a/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test03-errors.yaml
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-destructured-store-props/invalid/test03-errors.yaml
@@ -2,7 +2,7 @@
   line: 18
   column: 8
   suggestions:
-    - desc: 'Using destructuring like $: ({ baz } = $store); will run faster'
+    - desc: "Using destructuring like $: ({ baz } = $store); will run faster"
       messageId: fixUseDestructuring
       output: |
         <script>