[Fix] jsx-boolean-value: assumeUndefinedIsFalse with never must not allow explicit true value

Author: 6uliver

CHANGELOG.md

@@ -8,8 +8,10 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 ### Fixed
 * [`prop-types`]: null-check rootNode before calling getScope ([#3762][] @crnhrv)
 * [`boolean-prop-naming`]: avoid a crash with a spread prop ([#3733][] @ljharb)
+* [`jsx-boolean-value`]: `assumeUndefinedIsFalse` with `never` must not allow explicit `true` value ([#3757][] @6uliver)
 
 [#3762]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3762
+[#3757]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3757
 [#3733]: https://github.com/jsx-eslint/eslint-plugin-react/issues/3733
 
 ## [7.34.2] - 2024.05.24

lib/rules/jsx-boolean-value.js

@@ -132,7 +132,6 @@ module.exports = {
         }
         if (
           isNever(configuration, exceptions, propName)
-          && !configObject.assumeUndefinedIsFalse
           && value
           && value.type === 'JSXExpressionContainer'
           && value.expression.value === true

tests/lib/rules/jsx-boolean-value.js

@@ -52,6 +52,10 @@ ruleTester.run('jsx-boolean-value', rule, {
       code: '<App />;',
       options: ['never', { assumeUndefinedIsFalse: true }],
     },
+    {
+      code: '<App foo={false} />;',
+      options: ['never', { assumeUndefinedIsFalse: false }],
+    },
     {
       code: '<App foo={false} />;',
       options: ['never', { assumeUndefinedIsFalse: true, always: ['foo'] }],
@@ -145,6 +149,21 @@ ruleTester.run('jsx-boolean-value', rule, {
         },
       ],
     },
+    {
+      code: '<App foo={true} bak={false} />;',
+      output: '<App foo  />;',
+      options: ['never', { assumeUndefinedIsFalse: true }],
+      errors: [
+        {
+          messageId: 'omitBoolean',
+          data: { propName: 'foo' },
+        },
+        {
+          messageId: 'omitPropAndBoolean',
+          data: { propName: 'bak' },
+        },
+      ],
+    },
     {
       code: '<App foo={true} bar={false} baz={false} bak={false} />;',
       output: '<App foo={true} bar={false}   />;',