[New] jsx-no-leaked-render: add ignoreAttributes option

When true, validation of JSX attribute values is skipped.

Author: aleclarson

docs/rules/jsx-no-leaked-render.md

@@ -151,6 +151,10 @@ const Component = ({ elements }) => {
 
 The supported options are:
 
+### `ignoreAttributes`
+
+*TODO*
+
 ### `validStrategies`
 
 An array containing `"coerce"`, `"ternary"`, or both (default: `["ternary", "coerce"]`) - Decide which strategies are considered valid to prevent leaked renders (at least 1 is required). The "coerce" option will transform the conditional of the JSX expression to a boolean. The "ternary" option transforms the binary expression into a ternary expression returning `null` for falsy values. The first option from the array will be the strategy used when autofixing, so the order of the values matters.

lib/rules/jsx-no-leaked-render.js

@@ -49,6 +49,19 @@ function extractExpressionBetweenLogicalAnds(node) {
   );
 }
 
+function isWithinAttribute(node) {
+  const stopTypes = [
+    'JSXElement',
+    'JSXFragment',
+  ];
+  let parent = node.parent;
+  while (stopTypes.indexOf(parent.type) < 0) {
+    if (parent.type === 'JSXAttribute') return true;
+    parent = parent.parent;
+  }
+  return false;
+}
+
 function ruleFixer(context, fixStrategy, fixer, reportedNode, leftNode, rightNode) {
   const sourceCode = context.getSourceCode();
   const rightSideText = sourceCode.getText(rightNode);
@@ -107,6 +120,10 @@ module.exports = {
             uniqueItems: true,
             default: DEFAULT_VALID_STRATEGIES,
           },
+          ignoreAttributes: {
+            type: 'boolean',
+            default: false,
+          },
         },
         additionalProperties: false,
       },
@@ -120,6 +137,9 @@ module.exports = {
 
     return {
       'JSXExpressionContainer > LogicalExpression[operator="&&"]'(node) {
+        if (config.ignoreAttributes && isWithinAttribute(node)) {
+          return;
+        }
         const leftSide = node.left;
 
         const isCoerceValidLeftSide = COERCE_VALID_LEFT_SIDE_EXPRESSIONS
@@ -142,6 +162,9 @@ module.exports = {
         if (validStrategies.has(TERNARY_STRATEGY)) {
           return;
         }
+        if (config.ignoreAttributes && isWithinAttribute(node)) {
+          return;
+        }
 
         const isValidTernaryAlternate = TERNARY_INVALID_ALTERNATE_VALUES.indexOf(node.alternate.value) === -1;
         const isJSXElementAlternate = node.alternate.type === 'JSXElement';

tests/lib/rules/jsx-no-leaked-render.js

@@ -193,6 +193,16 @@ ruleTester.run('jsx-no-leaked-render', rule, {
       `,
       options: [{ validStrategies: ['coerce'] }],
     },
+
+    // See #3292
+    {
+      code: `
+        const Component = ({ enabled, checked }) => {
+          return <CheckBox checked={enabled && checked} />
+        }
+      `,
+      options: [{ ignoreAttributes: true }],
+    },
   ]),
 
   invalid: parsers.all([
@@ -789,5 +799,50 @@ ruleTester.run('jsx-no-leaked-render', rule, {
         column: 24,
       }],
     },
+
+    // See #3292
+    {
+      code: `
+        const Component = ({ enabled, checked }) => {
+          return <CheckBox checked={enabled && checked} />
+        }
+      `,
+      output: `
+        const Component = ({ enabled, checked }) => {
+          return <CheckBox checked={enabled ? checked : null} />
+        }
+      `,
+      errors: [{
+        message: 'Potential leaked value that might cause unintentionally rendered values or rendering crashes',
+        line: 3,
+        column: 37,
+      }],
+    },
+    {
+      code: `
+        const Component = ({ enabled }) => {
+          return (
+            <Foo bar={
+              <Something>{enabled && <MuchWow />}</Something>
+            } />
+          )
+        }
+      `,
+      output: `
+        const Component = ({ enabled }) => {
+          return (
+            <Foo bar={
+              <Something>{enabled ? <MuchWow /> : null}</Something>
+            } />
+          )
+        }
+      `,
+      options: [{ ignoreAttributes: true }],
+      errors: [{
+        message: 'Potential leaked value that might cause unintentionally rendered values or rendering crashes',
+        line: 5,
+        column: 27,
+      }],
+    },
   ]),
 });