import { NativeElement } from '@nonoun/native-core';
/**
 * Generic scrollable feed container with auto-scroll and virtual scroll.
 *
 * ```html
 * <n-feed align="end" scroll>
 *   <div>Item 1</div>
 *   <div>Item 2</div>
 * </n-feed>
 * ```
 *
 * @attr {'start'|'end'} align - Content alignment (default: start). `end` pushes content to bottom.
 * @attr {boolean} scroll - Enable scroll container (overflow-y: auto). CSS-only.
 * @attr {boolean} auto-scroll - Auto-scroll to bottom on new content (default: off)
 * @attr {boolean} virtual - Enable virtual scroll windowing
 * @attr {string} virtual-item-height - Estimated item height in px (default: 80)
 * @attr {string} virtual-overscan - Extra items to render outside viewport (default: 5)
 * @fires native:feed-scroll - Scroll pin state changed. Detail: `{ isPinned, scrollTop }`
 * @fires native:range-change - Virtual scroll range changed. Detail: `{ start, end, total }`
 */
export declare class NFeed extends NativeElement {
    #private;
    static observedAttributes: string[];
    get isPinned(): boolean;
    /** Scroll to the bottom of the feed. */
    scrollToBottom(smooth?: boolean): void;
    /** Data items for virtual rendering. */
    get items(): unknown[];
    set items(val: unknown[]);
    /** Callback that creates an HTMLElement from a data item. */
    get itemRenderer(): ((item: unknown, index: number) => HTMLElement) | null;
    set itemRenderer(fn: ((item: unknown, index: number) => HTMLElement) | null);
    attributeChangedCallback(name: string, old: string | null, val: string | null): void;
    setup(): void;
    teardown(): void;
}
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