WebJar for acorn
'org.webjars.npm:acorn:3.0.4'
<dependency> <groupId>org.webjars.npm</groupId> <artifactId>acorn</artifactId> <version>3.0.4</version> </dependency>
<dependency org="org.webjars.npm" name="acorn" rev="3.0.4"/>
"org.webjars.npm", "acorn", "3.0.4"