import{type PropertyValues,type TemplateResult}from'lit';import{LyraElement}from'../../../internal/lyra-element.js';
/** Reserved native browsing-context targets accepted by `lr-breadcrumb-item`. */
export type LyraBreadcrumbItemTarget='_blank'|'_parent'|'_self'|'_top';
/**
* `<lr-breadcrumb-item>` — one link, button, or current-page label in a breadcrumb.
* A host `aria-label` is forwarded by attribute presence to the non-current
* native link or button, including an explicitly empty value.
*
* @customElement lr-breadcrumb-item
* @slot - Item label.
* @slot start - Content before the label.
* @slot prefix - Shoelace-compatible alias for `start`.
* @slot end - Content after the label.
* @slot suffix - Shoelace-compatible alias for `end`.
* @slot separator - Decorative visual separator shown before non-first items; defaults to `/`.
*   Content is always inert and aria-hidden, so it must not supply interactive behavior, a focus
*   target, or form state.
* @csspart separator - Decorative separator shown before non-first items.
* @csspart base - The link, button, or current-page label.
* @csspart label - Wrapper around the default label slot.
* @csspart start - Wrapper around the `start` and `prefix` slots.
* @csspart prefix - Shoelace-compatible alias for `start`.
* @csspart end - Wrapper around the `end` and `suffix` slots.
* @csspart suffix - Shoelace-compatible alias for `end`.
* @cssprop [--lr-breadcrumb-current-color=var(--lr-color-text-quiet)] - Text color of the
*   current-page item (`current`/`aria-current="page"`). Declared as an inline `var()` fallback
*   (never on `:host`), so setting it on the element or an ancestor recolors only the current item
*   without hijacking the library-wide `--lr-color-text-quiet` token.
* @cssprop --lr-breadcrumb-item-active-bg - Link/button pressed background; defaults to the
*   former transparent active mix.
* @status stable
* @since 4.0.0
*/
export declare class LyraBreadcrumbItem extends LyraElement{static styles:import("lit").CSSResultGroup[];private _href;
/** Optional URL. A safe URL renders a native anchor; an unset URL renders a native button for
* non-current items. Assigning the upstream `undefined` spelling clears back to the canonical
* empty-string read value. */
get href():string;set href(value:string|undefined);
/** Native link target. When present, the rendered anchor always contributes
* `noopener noreferrer` to `rel` — author tokens are merged, not ignored (see `rel`). */
target?:LyraBreadcrumbItemTarget;
/** Author-settable link relationship, merged with a non-negotiable security floor: `opener` is
*  always stripped, and `noopener noreferrer` is force-added whenever `target` is set.
*
*  Defaults to `'noreferrer noopener'`, which is what BOTH `wa-breadcrumb-item` and
*  `sl-breadcrumb-item` declare — unlike `lr-button`, where the two upstreams disagree and Lyra
*  therefore keeps no default. */
rel:string;
/** Author tokens minus `opener`, plus the guard whenever `target` is set. `undefined` when
*  nothing remains, so the attribute is omitted rather than rendered empty. */
private get resolvedRel();current:boolean;private readonly slots;private semanticFocusOrigin?;connectedCallback():void;protected willUpdate(changed:PropertyValues<this>):void;protected updated(changed:PropertyValues<this>):void;disconnectedCallback():void;
/** Activates the internal link or button. Current-page labels remain inert. */
click():void;render():TemplateResult;}declare global{interface HTMLElementTagNameMap{'lr-breadcrumb-item':LyraBreadcrumbItem;}}