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node_modules/@n8n/eslint-plugin-community-nodes/docs/rules/icon-validation.md

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+# Validate node and credential icon files exist, are SVG format, and light/dark icons are different (`@n8n/community-nodes/icon-validation`)
+
+💼 This rule is enabled in the following configs: ✅ `recommended`, ☑️ `recommendedWithoutN8nCloudSupport`.
+
+💡 This rule is manually fixable by [editor suggestions](https://eslint.org/docs/latest/use/core-concepts#rule-suggestions).
+
+<!-- end auto-generated rule header -->
+
+## Rule Details
+
+Validates that your node and credential icon files exist, are in SVG format, and use the correct `file:` protocol. Icons must be different files when providing light/dark theme variants.
+
+## Examples
+
+### ❌ Incorrect
+
+```typescript
+export class MyNode implements INodeType {
+  description: INodeTypeDescription = {
+    displayName: 'My Node',
+    name: 'myNode',
+    icon: 'icons/my-icon.png', // Missing 'file:' prefix, wrong format
+    // ...
+  };
+}
+```
+
+```typescript
+export class MyNode implements INodeType {
+  description: INodeTypeDescription = {
+    displayName: 'My Node',
+    name: 'myNode',
+    icon: {
+      light: 'file:icons/my-icon.svg',
+      dark: 'file:icons/my-icon.svg', // Same file for both themes
+    },
+    // ...
+  };
+}
+```
+
+### ✅ Correct
+
+```typescript
+export class MyNode implements INodeType {
+  description: INodeTypeDescription = {
+    displayName: 'My Node',
+    name: 'myNode',
+    icon: 'file:icons/my-service.svg', // Correct format
+    // ...
+  };
+}
+```
+
+```typescript
+export class MyNode implements INodeType {
+  description: INodeTypeDescription = {
+    displayName: 'My Node',
+    name: 'myNode',
+    icon: {
+      light: 'file:icons/my-service-light.svg',
+      dark: 'file:icons/my-service-dark.svg', // Different files
+    },
+    // ...
+  };
+}
+```