auto fix

lib/rules/no-arrow-function-lifecycle.js

@@ -23,22 +23,40 @@ module.exports = {
   },
 
   create: Components.detect((context, components) => {
+    function getText(node) {
+      const params = node.value.params.map((p) => p.name);
+
+      if (node.type === 'Property') {
+        return `: function(${params.join(', ')}) `;
+      }
+
+      if (node.type === 'ClassProperty') {
+        return `(${params.join(', ')}) `;
+      }
+
+      return null;
+    }
+
     /**
      * @param {Array} properties list of component properties
      */
     function reportNoArrowFunctionLifecycle(properties) {
       properties.forEach((node) => {
         const propertyName = astUtil.getPropertyName(node);
-        const nodeType = node.value && node.value.type;
+        const nodeType = node.value.type;
         const isLifecycleMethod = lifecycleMethods.includes(propertyName);
 
         if (nodeType === 'ArrowFunctionExpression' && isLifecycleMethod) {
+          const range = [node.key.range[1], node.value.body.range[0]];
+          const text = getText(node);
+
           context.report({
             node,
             message: '{{propertyName}} is a React lifecycle method, and should not be an arrow function or in a class field. Use an instance method instead.',
             data: {
               propertyName
-            }
+            },
+            fix: (fixer) => fixer.replaceTextRange(range, text)
           });
         }
       });

lib/rules/no-typos.js

@@ -163,7 +163,7 @@ module.exports = {
         }
       });
 
-      lifecycleMethods.forEach(method => {
+      lifecycleMethods.forEach((method) => {
         if (method.toLowerCase() === nodeKeyName.toLowerCase() && method !== nodeKeyName) {
           context.report({
             node,