[Fix] static-property-placement: warn on nonstatic expected-statics

Fixes #2581

Author: ljharb

CHANGELOG.md

@@ -10,6 +10,7 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 * [`no-arrow-function-lifecycle`]: when converting from an arrow, remove the semi and wrapping parens ([#3337][] @ljharb)
 * [`jsx-key`]: Ignore elements inside `React.Children.toArray()` ([#1591][] @silvenon)
 * [`jsx-no-constructed-context-values`]: fix false positive for usage in non-components ([#3448][] @golopot)
+* [`static-property-placement`]: warn on nonstatic expected-statics ([#2581][] @ljharb)
 
 ### Changed
 * [Docs] [`no-unknown-property`]: fix typo in link ([#3445][] @denkristoffer)
@@ -22,6 +23,7 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 [#3444]: https://github.com/jsx-eslint/eslint-plugin-react/pull/3444
 [#3436]: https://github.com/jsx-eslint/eslint-plugin-react/issues/3436
 [#3337]: https://github.com/jsx-eslint/eslint-plugin-react/issues/3337
+[#2581]: https://github.com/jsx-eslint/eslint-plugin-react/issues/2581
 [#1591]: https://github.com/jsx-eslint/eslint-plugin-react/pull/1591
 
 ## [7.31.8] - 2022.09.08

lib/rules/static-property-placement.js

@@ -128,7 +128,13 @@ module.exports = {
       });
 
       // If name is set but the configured rule does not match expected then report error
-      if (name && config[name] !== expectedRule) {
+      if (
+        name
+        && (
+          config[name] !== expectedRule
+          || (!node.static && (config[name] === STATIC_PUBLIC_FIELD || config[name] === STATIC_GETTER))
+        )
+      ) {
         const messageId = ERROR_MESSAGES[config[name]];
         report(context, messages[messageId], messageId, {
           node,

tests/lib/rules/static-property-placement.js

@@ -2186,5 +2186,20 @@ ruleTester.run('static-property-placement', rule, {
         },
       ],
     },
+    {
+      code: `
+        class MyComponent extends React.Component {
+          displayName = 'Foo';
+        }
+      `,
+      features: ['class fields'],
+      options: [STATIC_PUBLIC_FIELD],
+      errors: [
+        {
+          messageId: 'notStaticClassProp',
+          data: { name: 'displayName' },
+        },
+      ],
+    },
   ]),
 });