<dependency>
  <groupId>org.webjars.npm</groupId>
  <artifactId>grunt-contrib-watch</artifactId>
  <version>0.6.1</version>
</dependency>

implementation 'org.webjars.npm:grunt-contrib-watch:0.6.1'

implementation("org.webjars.npm:grunt-contrib-watch:0.6.1")

libraryDependencies += "org.webjars.npm" % "grunt-contrib-watch" % "0.6.1"

@Grapes(
  @Grab(group='org.webjars.npm', module='grunt-contrib-watch', version='0.6.1')
)

<dependency org="org.webjars.npm" name="grunt-contrib-watch" rev="0.6.1" />

[org.webjars.npm/grunt-contrib-watch "0.6.1"]

'org.webjars.npm:grunt-contrib-watch:jar:0.6.1'