Execute NPM during a Maven build.

pom.xml

 <!-- In my JEE project I use REACT with Babel and Webpack and I must build the javascript files before prepare the WAR.
 I have also configure webpack.config.js to build in a folder under my web application, e.g.:
 
 var DIST_PATH = path.resolve(ROOT_PATH, '../src/main/java/webapp/js/react');
 
 To setup REACT inside my project I used https://github.com/gesposito/bare-webpack
 
 -->
 <project>
    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>some-execution</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <executable>npm</executable>
                    <arguments>
                        <argument>run</argument>
                        <argument>build</argument>
                    </arguments>
                    <workingDirectory>react</workingDirectory>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>