admin_local_tasks-1.0.0-rc1/admin_local_tasks.libraries.yml

base:
  version: 1.1.0
  js:
    https://unpkg.com/@popperjs/core@2: { external: true }
    https://unpkg.com/tippy.js@6: { external: true }
    assets/js/tooltips.js: {}
  css:
    component:
      assets/css/base.css: {}