import type * as Udemy from "@vot.js/shared/types/helpers/udemy";
import type { MinimalVideoData } from "../types/client.js";
import { BaseHelper } from "./base.js";
type UrlCandidate = {
    file?: string;
    src?: string;
    type?: string;
    label?: string | number;
    quality?: string | number;
    height?: string | number;
};
type CaptionWithDownloadUrl = Udemy.Caption & {
    download_url?: string;
    locale?: {
        locale?: string;
    };
};
type LectureWithViewHtml = Udemy.Lecture & {
    view_html?: string;
};
export default class UdemyHelper extends BaseHelper {
    API_ORIGIN: string;
    getModuleData(): Udemy.ModuleData | undefined;
    getLectureId(videoId?: string): string | undefined;
    getCourseId(moduleData?: Udemy.ModuleData): string | undefined;
    normalizeId(value: unknown): string | undefined;
    parseJson<T>(value: string): T | undefined;
    getViewHtmlCandidates(viewHtml?: string): UrlCandidate[];
    isErrorData<T extends object>(data: T | Udemy.ErrorData): data is Udemy.ErrorData;
    getLectureData(courseId: number | string, lectureId: number | string): Promise<LectureWithViewHtml | undefined>;
    getCourseLang(courseId: number | string): Promise<Udemy.Course | undefined>;
    findVideoUrl(sources: Udemy.MediaSource[] | undefined, streamUrls?: unknown, downloadUrls?: unknown, streamUrl?: unknown, externalUrl?: unknown, outputs?: unknown, viewHtml?: unknown): string | undefined;
    getCaptionLocale(caption: CaptionWithDownloadUrl): string | undefined;
    findSubtitleUrl(captions: unknown, detectedLanguage: string): string | undefined;
    getVideoData(videoId: string): Promise<MinimalVideoData | undefined>;
    getVideoId(url: URL): Promise<string>;
}
export {};
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