nodejs
diff --git a/Collapse file
‎test/parallel/test-eslint-no-let-in-for-declaration.js‎
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+3Lines changed: 3 additions & 0 deletions b/Collapse file
‎test/parallel/test-eslint-no-let-in-for-declaration.js‎
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+3Lines changed: 3 additions & 0 deletions
diff --git a/Collapse file
‎tools/eslint-rules/no-let-in-for-declaration.js‎
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+13-3Lines changed: 13 additions & 3 deletions b/Collapse file
‎tools/eslint-rules/no-let-in-for-declaration.js‎
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+13-3Lines changed: 13 additions & 3 deletions
@@ -24,14 +24,17 @@ ruleTester.run('no-let-in-for-declaration', rule, {
   invalid: [
     {
       code: 'for (let foo = 1;;);',
+      output: 'for (var foo = 1;;);',
       errors: [{ message }]
     },
     {
       code: 'for (let foo in bar);',
+      output: 'for (var foo in bar);',
       errors: [{ message }]
     },
     {
       code: 'for (let foo of bar);',
+      output: 'for (var foo of bar);',
       errors: [{ message }]
     }
   ]
 
@@ -14,7 +14,7 @@
 
 module.exports = {
   create(context) {
-
+    const sourceCode = context.getSourceCode();
     const msg = 'Use of `let` as the loop variable in a for-loop is ' +
                 'not recommended. Please use `var` instead.';
 
@@ -23,7 +23,12 @@ module.exports = {
      */
     function testForLoop(node) {
       if (node.init && node.init.kind === 'let') {
-        context.report(node.init, msg);
+        context.report({
+          node: node.init,
+          message: msg,
+          fix: (fixer) =>
+            fixer.replaceText(sourceCode.getFirstToken(node.init), 'var')
+        });
       }
     }
 
@@ -33,7 +38,12 @@ module.exports = {
      */
     function testForInOfLoop(node) {
       if (node.left && node.left.kind === 'let') {
-        context.report(node.left, msg);
+        context.report({
+          node: node.left,
+          message: msg,
+          fix: (fixer) =>
+            fixer.replaceText(sourceCode.getFirstToken(node.left), 'var')
+        });
       }
     }
Original file line number	Diff line number	Diff line change
`@@ -24,14 +24,17 @@ ruleTester.run('no-let-in-for-declaration', rule, {`
`24`	`24`	`invalid: [`
`25`	`25`	`{`
`26`	`26`	`code: 'for (let foo = 1;;);',`
	`27`	`+ output: 'for (var foo = 1;;);',`
`27`	`28`	`errors: [{ message }]`
`28`	`29`	`},`
`29`	`30`	`{`
`30`	`31`	`code: 'for (let foo in bar);',`
	`32`	`+ output: 'for (var foo in bar);',`
`31`	`33`	`errors: [{ message }]`
`32`	`34`	`},`
`33`	`35`	`{`
`34`	`36`	`code: 'for (let foo of bar);',`
	`37`	`+ output: 'for (var foo of bar);',`
`35`	`38`	`errors: [{ message }]`
`36`	`39`	`}`
`37`	`40`	`]`