<dependency>
  <groupId>org.webjars.npm</groupId>
  <artifactId>rxjs</artifactId>
  <version>5.0.0-beta.12</version>
</dependency>

implementation 'org.webjars.npm:rxjs:5.0.0-beta.12'

implementation("org.webjars.npm:rxjs:5.0.0-beta.12")

libraryDependencies += "org.webjars.npm" % "rxjs" % "5.0.0-beta.12"

@Grapes(
  @Grab(group='org.webjars.npm', module='rxjs', version='5.0.0-beta.12')
)

<dependency org="org.webjars.npm" name="rxjs" rev="5.0.0-beta.12" />

[org.webjars.npm/rxjs "5.0.0-beta.12"]

'org.webjars.npm:rxjs:jar:5.0.0-beta.12'