import{type PropertyValues,type TemplateResult}from'lit';import{LyraElement}from'../../../internal/lyra-element.js';export interface LyraMutationObserverEventMap{'lr-mutation':CustomEvent<Readonly<{records:readonly MutationRecord[];mutationList:readonly MutationRecord[];}>>;}
/**
* `<lr-mutation-observer>` — observes element children in the default slot
* and forwards native mutation records as a composed event. It is useful for
* integrating third-party renderers while keeping observer cleanup declarative.
*
* @customElement lr-mutation-observer
* @slot - Elements to observe.
* @event lr-mutation - Observed DOM mutations; `detail.records` and
* `detail.mutationList` reference the same frozen readonly batch, whose native records retain
* identity.
* @csspart base - The non-layout wrapper around the observed slot.
* @status stable
* @since 4.0.0
*/
export declare class LyraMutationObserver extends LyraElement<LyraMutationObserverEventMap>{static styles:import("lit").CSSResultGroup[];protected static readonly immutableEventDetails:readonly string[];protected static readonly identityEventDetailCollectionItems:Readonly<{'lr-mutation':readonly string[];}>;disabled:boolean;childList:boolean;
/** Mapped attribute selector: `*` observes all attributes; otherwise use space-separated names. */
attr:string|null;attrOldValue:boolean;charData:boolean;charDataOldValue:boolean;
/**
* Lyra compatibility alias for `attr` (its unfiltered boolean form, equivalent to `attr: '*'`
* -- observes every attribute with no name filtering). Reflects like every other mapped
* observer attribute on this element so DOM introspection (`outerHTML`, attribute selectors,
* SSR re-serialization) stays consistent with a property assignment, not just a declarative one.
*/
observeAttributes:boolean;
/**
* Lyra compatibility alias for `charData`. Reflects like every other mapped observer attribute
* on this element so DOM introspection stays consistent with a property assignment, not just a
* declarative one.
*/
characterData:boolean;subtree:boolean;attributeFilter:string[];private observer?;private observerDocument?;private observerGeneration;connectedCallback():void;disconnectedCallback():void;adoptedCallback():void;protected updated(changed:PropertyValues):void;private onSlotChange;private disconnect;private observeTargets;render():TemplateResult;}declare global{interface HTMLElementTagNameMap{'lr-mutation-observer':LyraMutationObserver;}}