├── pom.xml
└── src
    ├── main
    │   ├── java
    │   │   └── com
    │   │       └── darshan
    │   │           └── SourceMapFilter.java
    │   ├── resources
    │   │   ├── readme.txt
    │   │   └── static-bundles.json
    │   └── webapp
    │       ├── css
    │       │   ├── custom.css
    │       │   └── style.css
    │       ├── index.html
    │       ├── js
    │       │   ├── custom.js
    │       │   └── script.js
    │       ├── META-INF
    │       │   └── context.xml
    │       └── WEB-INF
    │           └── web.xml
    └── test
        └── java

{
    "bundles": [
        {
            "type": "css",
            "name": "static-combined.css",
            "files": [
                "custom.css",
                "style.css"
            ]
        },
        {
            "type": "js",
            "name": "static-combined.js",
            "files": [
                "custom.js",
                "script.js"
            ]
        }
    ]
}

<plugin>
    <groupId>com.samaxes.maven</groupId>
    <artifactId>minify-maven-plugin</artifactId>
    <version>1.7.6</version>
    <executions>
        <execution>
            <id>bundle-minify</id>
            <phase>package</phase>
            <goals>
                <goal>minify</goal>
            </goals>
            <configuration>
                <webappSourceDir>${project.basedir}</webappSourceDir>
                <webappTargetDir>${project.basedir}</webappTargetDir>
                
                <cssSourceDir>css</cssSourceDir>
                <cssSourceFiles>
                    <cssSourceFile>custom.css</cssSourceFile>
                    <cssSourceFile>style.css</cssSourceFile>
                </cssSourceFiles>
                <cssTargetDir>css</cssTargetDir>
                <cssFinalFile>static-combined.css</cssFinalFile>
                <cssSourceDir>js</cssSourceDir>
                <jsSourceFiles>
                    <jsSourceFile>custom.js</jsSourceFile>
                    <jsSourceFile>script.js</jsSourceFile>
                </jsSourceFiles>
                <jsTargetDir>js</jsTargetDir>
                <jsFinalFile>static-combined.js</jsFinalFile>
            </configuration>
        </execution>
    </executions>
</plugin>