import TinyHtmlTemplate from '../TinyHtmlTemplate.mjs';
/**
 * TinyHtmlSource is a helper class for creating and validating <source> elements.
 * The <source> tag has contextual rules depending on its parent:
 *
 * - If inside <audio> or <video>, `src` is required, and `srcset`, `sizes`, `height`, `width` are forbidden.
 * - If inside <picture>, `srcset` is required, `sizes` is allowed, and `src` is forbidden.
 *
 * @example
 * // For <video>
 * const sourceVideo = new TinyHtmlSource({
 *   src: 'movie.mp4',
 *   type: 'video/mp4',
 *   context: 'video'
 * });
 *
 * // For <picture>
 * const sourcePicture = new TinyHtmlSource({
 *   srcset: 'image-200.jpg 200w, image-400.jpg 400w',
 *   sizes: '(max-width: 600px) 200px, 400px',
 *   type: 'image/jpeg',
 *   context: 'picture'
 * });
 *
 * @extends TinyHtmlTemplate<HTMLSourceElement>
 */
declare class TinyHtmlSource extends TinyHtmlTemplate<HTMLSourceElement> {
    /**
     * Creates a new TinyHtmlSource instance.
     * @param {Object} config - Configuration object.
     * @param {string} [config.type] - MIME type (optionally with codecs).
     * @param {string} [config.src] - Resource URL (required in audio/video, forbidden in picture).
     * @param {string} [config.srcset] - Comma-separated list of image candidates (required in picture).
     * @param {string} [config.sizes] - List of source sizes (only valid in picture with srcset).
     * @param {string} [config.media] - Media query for conditional loading.
     * @param {number} [config.height] - Intrinsic image height (only valid in picture).
     * @param {number} [config.width] - Intrinsic image width (only valid in picture).
     * @param {string|string[]|Set<string>} [config.tags=[]] - Initial CSS classes.
     * @param {string} [config.mainClass=""] - Main CSS class.
     * @param {"audio"|"video"|"picture"} [config.context] - Parent context type (used for validation).
     * @throws {TypeError|Error} If attributes are invalid or violate context rules.
     */
    constructor({ type, src, srcset, sizes, media, height, width, tags, mainClass, context, }?: {
        type?: string;
        src?: string;
        srcset?: string;
        sizes?: string;
        media?: string;
        height?: number;
        width?: number;
        tags?: string | string[] | Set<string>;
        mainClass?: string;
        context?: "audio" | "video" | "picture";
    });
    /** @param {string} type */
    set type(type: string);
    /** @returns {string|null} */
    get type(): string | null;
    /** @param {string} src */
    set src(src: string);
    /** @returns {string|null} */
    get src(): string | null;
    /** @param {string} srcset */
    set srcset(srcset: string);
    /** @returns {string|null} */
    get srcset(): string | null;
    /** @param {string} sizes */
    set sizes(sizes: string);
    /** @returns {string|null} */
    get sizes(): string | null;
    /** @param {string} media */
    set media(media: string);
    /** @returns {string|null} */
    get media(): string | null;
}
export default TinyHtmlSource;
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