mediacms-vjs-plugin is a custom plugin for Video.js.

The MediaCmsVjsPlugin.js source file starts with:

import { version as VERSION } from '../package.json';

import 'mediacms-vjs-plugin-font-icons/dist/mediacms-vjs-icons.css';
import './styles.scss';

As can be seen, there is no import of videojs. However, videojs is being used all over the code like:

function generatePlugin() {
    const videojsComponent = videojs.getComponent('Component');
    const videojsClickableComponent = videojs.getComponent('ClickableComponent');
    const videojsComponentButton = videojs.getComponent('Button');

    const __MediaCMSComponent__ = videojs.extend(videojsComponent, {
    

How is it possible to use videojs without importing it first?

Its package.json file specifies videojs as a peer dependency:

  "peerDependencies": {
    "video.js": "^7.12.3"
  },

Could it be that whenever there is a peer dependency, we don't have to import it explicitly?