<dependency>
  <groupId>org.webjars.npm</groupId>
  <artifactId>rxjs</artifactId>
  <version>6.6.7</version>
</dependency>

implementation 'org.webjars.npm:rxjs:6.6.7'

implementation("org.webjars.npm:rxjs:6.6.7")

libraryDependencies += "org.webjars.npm" % "rxjs" % "6.6.7"

@Grapes(
  @Grab(group='org.webjars.npm', module='rxjs', version='6.6.7')
)

<dependency org="org.webjars.npm" name="rxjs" rev="6.6.7" />

[org.webjars.npm/rxjs "6.6.7"]

'org.webjars.npm:rxjs:jar:6.6.7'