v10/packages/html/src/define/media/container.ts

import { playerContext } from '../../player/context';
import { createContainerMixin } from '../../store/container-mixin';
import { MediaElement } from '../../ui/media-element';

const ContainerMixin = createContainerMixin(playerContext);

export class MediaContainerElement extends ContainerMixin(MediaElement) {
  static readonly tagName = 'media-container';
}

customElements.define(MediaContainerElement.tagName, MediaContainerElement);

declare global {
  interface HTMLElementTagNameMap {
    [MediaContainerElement.tagName]: MediaContainerElement;
  }
}