v1.0.3: let/const usage is prohibited

index.js

@@ -274,6 +274,33 @@ module.exports = {
 					}
 				};
 			}
+		},
+		// auto fixable
+		'prefer-var': {
+			meta: {
+				docs: {
+					description: 'Disallow let/const usage',
+					category: 'Z8 Stylistic Issues',
+					recommended: true,
+				},
+				fixable: 'code',
+				schema: [],
+			},
+			create: function(context) {
+				return {
+					VariableDeclaration(node) {
+						if (node.kind !== 'var') {
+							context.report({
+								node: node,
+								message: 'Prefer using `var` instead of `let` or `const`.',
+								fix: function(fixer) {
+									return fixer.replaceTextRange([node.start, node.start + node.kind.length], 'var');
+								}
+							});
+						}
+					}
+				};
+			}
 		}
 	},
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "eslint-plugin-z8",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "private": true,
   "main": "index.js",
   "dependencies": {