import VideoJSHelper from "../players/videojs.js";
import type { MinimalVideoData } from "../types/client.js";
export default class DataCampHelper extends VideoJSHelper {
    SUBTITLE_SOURCE: string;
    getVideoUrlFromInput(input: Element): string | null;
    getVideoUrlFromDocument(doc?: Document | Element): string | null;
    getVideoData(videoId: string): Promise<MinimalVideoData | undefined>;
    getVideoId(url: URL): Promise<string | undefined>;
}
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