import { EventEmitter } from '../../stencil-public-runtime';
import { SkipLinkPosition } from './exports';
/**
 * An accessibility utility that renders a visible-on-focus link allowing keyboard users to skip navigation and jump directly to main content.
 *
 * Example
 * ```
 * <r-skip-link>
 *   <a href="#main-content">Skip to main content</a>
 * </r-skip-link>
 *
 * <main id="main-content">
 *   <!-- page content -->
 * </main>
 * ```
 *
 * Visibility is the union of two independent sources: the link is visible while it contains
 * focus (default accessibility behaviour, resolved by CSS) or while `revealed` is set
 * (programmatic control). Because of that, `revealed` means "forced visible", not "is visible".
 *
 * While visible, the link is anchored to the viewport (`position: fixed`), so revealing it on a
 * scrolled page keeps it in view without scrolling the page. An ancestor with `transform`,
 * `filter`, `perspective`, `backdrop-filter`, or `contain: paint` becomes the containing block
 * and the link is anchored to that element instead of the viewport.
 *
 * @slot - Skip link label text
 */
export declare class SkipLink {
    host: HTMLRSkipLinkElement;
    /** Defines skip link position */
    position: SkipLinkPosition;
    /**
     * Forces the skip link to be visible, independently of focus.
     * The link is also visible while it contains focus, so `revealed="false"` does not
     * hide a link that is currently focused.
     */
    revealed: boolean;
    /** Tracks focus inside the skip link. Used for event emission only, visibility is resolved by CSS. */
    focused: boolean;
    /**
     * Emitted when the skip link becomes visible, either through `reveal()`/`revealed`
     * or because it received focus.
     */
    rReveal: EventEmitter<void>;
    /**
     * Emitted when the skip link becomes hidden, either through `hide()`/`revealed`
     * or because it lost focus.
     */
    rHide: EventEmitter<void>;
    /** Last emitted visibility, used to emit on transitions only. */
    private visible;
    /**
     * Reveals the skip link without waiting for focus.
     * Does not move focus. Calling it on an already visible link emits nothing.
     */
    reveal(): Promise<void>;
    /**
     * Hides the skip link and restores the default focus-driven behaviour.
     * While the link still contains focus it stays visible, and `rHide` is emitted once focus leaves.
     */
    hide(): Promise<void>;
    onRevealedChange(): void;
    onFocusIn(): void;
    onFocusOut(event: FocusEvent): void;
    componentDidLoad(): void;
    private syncVisibility;
    render(): any;
}