vaadin-framework/shared/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-root</artifactId>
        <version>8.0-SNAPSHOT</version>
    </parent>
    <artifactId>vaadin-shared</artifactId>
    <name>vaadin-shared</name>
    <packaging>jar</packaging>

    <properties>
    </properties>

    <url>https://vaadin.com/</url>
    <description>Vaadin shared</description>

    <dependencies>
        <!-- Needed GWT dependencies. Required parts are packaged to jar -->
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-elemental</artifactId>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- Generated Version.java -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>templating-maven-plugin</artifactId>
                <version>1.0.0</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>filter-sources</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <!-- Copy needed GWT dependencies to package -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>unpack-dependencies</id>
                        <phase>generate-resources</phase>
                        <goals>
                            <goal>unpack</goal>
                        </goals>
                        <configuration>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>com.google.gwt</groupId>
                                    <artifactId>gwt-elemental</artifactId>
                                    <includes>
                                        elemental/json/**,
                                        elemental/util/Array*,
                                        elemental/util/Can*,
                                        elemental/util/Map*
                                    </includes>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>


            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <executions>
                    <!-- Copy .java files to package -->
                    <execution>
                        <id>copy-sources</id>
                        <!-- here the phase you need -->
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.outputDirectory}</outputDirectory>
                            <resources>
                                <resource>
                                    <directory>src/main/java</directory>
                                    <filtering>false</filtering>
                                </resource>
                                <resource>
                                    <directory>${project.build.directory}/generated-sources/java-templates</directory>
                                    <filtering>false</filtering>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <extensions>true</extensions>
                <configuration>
                    <instructions>
                        <Bundle-RequiredExecutionEnvironment>${osgi.execution.environment}</Bundle-RequiredExecutionEnvironment>
                        <Bundle-Version>${osgi.bundle.version}</Bundle-Version>
                        <Export-Package>com.vaadin.*;version="${osgi.bundle.version}",elemental.*;version="${osgi.bundle.version}"</Export-Package>
                        <Import-Package></Import-Package>
                        <Require-Bundle></Require-Bundle>
                    </instructions>
                </configuration>
                <executions>
                    <execution>
                        <id>bundle-manifest</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>manifest</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
                        <index>false</index>
                        <manifest>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-checkstyle-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>checkstyle</goal>
                        </goals>
                        <phase>process-sources</phase>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>