[Fix] jsx-handler-names: properly substitute value into message

Author: G-Rath

CHANGELOG.md

@@ -8,6 +8,10 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 ### Added
 * component detection: add componentWrapperFunctions setting ([#2713][] @@jzabala @LandonSchropp)
 
+### Fixed
+* [`jsx-handler-names`]: properly substitute value into message ([#2975][] @G-Rath)
+
+[#2975]: https://github.com/yannickcr/eslint-plugin-react/pull/2975
 [#2713]: https://github.com/yannickcr/eslint-plugin-react/pull/2713
 
 ## [7.23.2] - 2021.04.08

lib/rules/jsx-handler-names.js

@@ -22,7 +22,7 @@ module.exports = {
 
     messages: {
       badHandlerName: 'Handler function for {{propKey}} prop key must be a camelCase name beginning with \'{{handlerPrefix}}\' only',
-      badPropKey: 'Prop key for {{propValue}} must begin with \'{{handlerPropPrefix}\''
+      badPropKey: 'Prop key for {{propValue}} must begin with \'{{handlerPropPrefix}}\''
     },
 
     schema: [{

tests/lib/rules/jsx-handler-names.js

@@ -210,6 +210,11 @@ ruleTester.run('jsx-handler-names', rule, {
     options: [{
       checkInlineFunction: true
     }]
+  }, {
+    code: '<TestComponent only={this.handleChange} />',
+    errors: [{
+      message: 'Prop key for handleChange must begin with \'on\''
+    }]
   }, {
     code: '<TestComponent only={this.handleChange} />',
     errors: [{