Please see below example for sample configuration.

<plugin>
	<groupId>com.goda5</groupId>
	<artifactId>jsModelGenerator</artifactId>
	<version>1.0-SNAPSHOT</version>
	<configuration>
		<packages>
			<package>com.expedia.copilot.domain</package>
		</packages>
		<targetJsFolder>/src/main/webapp/js/generatedModel/</targetJsFolder>
	</configuration>
	<executions>
		<execution>
			<phase>generate-sources</phase>
			<goals>
				<goal>generateJs</goal>
			</goals>
		</execution>
	</executions>
</plugin>

Which will generate Editing.js

function Editing(source, posStart, posEnd, value) {
	this.source = source;
	this.posStart = posStart;
	this.posEnd = posEnd;
	this.value = value;
}

From given input Editing.java

@JavascriptDomainModel
public class Editing {
	private String source;
	private int posStart;
	private int posEnd;
	private String value;
}