import{type TemplateResult}from'lit';import{LyraElement}from'../../../internal/lyra-element.js';
/**
* `<lr-breadcrumb>` — a responsive navigation trail.
*
* @customElement lr-breadcrumb
* @slot - `<lr-breadcrumb-item>` children.
* @slot separator - Decorative visual separator copied into each item that does not provide its own
*   separator. Generated copies are inert and aria-hidden, with identifiers, ID references, form
*   associations, and submission attributes removed. Source mutations patch identity-compatible
*   copies in place; do not use this slot for interactive content or form controls.
* @csspart base - Compatibility name for the navigation wrapper; use `breadcrumb`.
* @csspart breadcrumb - The navigation wrapper. It is the same node as `base`.
* @csspart list - The `role="list"` flex row wrapping the slotted items.
* @status stable
* @since 4.0.0
*/
export declare class LyraBreadcrumb extends LyraElement{static styles:import("lit").CSSResultGroup[];
/** Accessible-name override for the trail, mapped to the host's `aria-label` attribute the same
*  way every other Lyra component spells this member. The `<nav>` landmark that owns the role
*  lives in the shadow root and never inherits a host attribute automatically, so the value is
*  copied onto it. Both spellings work: an `aria-label` attribute on `<lr-breadcrumb>` (which the
*  attribute mapping also surfaces here) and a plain property assignment
*  (`el.accessibleLabel = 'Docs trail'`). Wins over `label` and over the localized default
*  ("Breadcrumb"); an explicitly empty `aria-label` attribute or an explicitly empty
*  `accessibleLabel`/`label` property assignment stays empty rather than falling through. */
accessibleLabel?:string;
/** Accessible name matching both pinned upstream breadcrumb contracts. A host `aria-label`
* remains the highest-priority override. An explicitly empty string stays empty rather than
* falling back to the localized default. */
label?:string;private generatedSeparators;private separatorObserver?;private separatorObserverDocument?;private firstItem?;connectedCallback():void;disconnectedCallback():void;private clearGeneratedSeparators;private setFirstItem;private observeSeparatorSources;private syncSeparators;render():TemplateResult;}declare global{interface HTMLElementTagNameMap{'lr-breadcrumb':LyraBreadcrumb;}}