Fail CI build on prettier errors (jenkinsci#10101)

Author: basil

package.json

@@ -15,7 +15,7 @@
     "build": "yarn prod",
     "start": "yarn dev --watch",
     "lint:js": "eslint . && prettier --check .",
-    "lint:js-ci": "eslint . -f checkstyle -o target/eslint-warnings.xml && prettier --check .",
+    "lint:js-ci": "eslint . -f checkstyle -o target/eslint-warnings.xml",
     "lint:css": "stylelint src/main/scss",
     "lint:css-ci": "stylelint src/main/scss --custom-formatter stylelint-checkstyle-reporter -o target/stylelint-warnings.xml",
     "lint:ci": "yarn lint:js-ci && yarn lint:css-ci",

pom.xml

@@ -519,6 +519,18 @@ THE SOFTWARE.
                   <skip>${yarn.lint.skip}</skip>
                 </configuration>
               </execution>
+              <execution>
+                <id>prettier</id>
+                <goals>
+                  <goal>corepack</goal>
+                </goals>
+                <phase>test</phase>
+                <configuration>
+                  <arguments>yarn exec prettier --check .</arguments>
+                  <skip>${yarn.lint.skip}</skip>
+                  <testFailureIgnore>false</testFailureIgnore>
+                </configuration>
+              </execution>
             </executions>
           </plugin>
         </plugins>