import type { LightningElement, LightningElementStyle } from '@plextv/react-lightning';
import type { YogaOptions } from './types/YogaOptions';
/** Lifecycle of Yoga nodes for Lightning elements. Main-thread only. */
export declare class LightningManager {
    private _elements;
    private _boundaries;
    private _flexRoots;
    /** childId -> yoga-side parentId. Lets boundary/flex-root marking stay sync without a worker round-trip. */
    private _yogaParents;
    /** Per-parent attached-children count. Lets `_yogaIndexFor` skip the O(n) sibling walk on append-at-end. */
    private _yogaChildCounts;
    private _yogaManager;
    init(yogaOptions?: YogaOptions): Promise<void>;
    /**
     * Detaches the element's subtree from yoga (and excludes future
     * descendants). A nested {@link markFlexRoot} re-enables flex below it.
     * No-op outside a flex root since those elements are already excluded.
     */
    markBoundary(element: LightningElement): () => void;
    unmarkBoundary(elementId: number): void;
    /**
     * Opts an element and its subtree into flex layout as an independent
     * yoga root. Flex is opt-in — without a flex root above it, an element
     * is invisible to yoga.
     */
    markFlexRoot(element: LightningElement): () => void;
    unmarkFlexRoot(elementId: number): void;
    /** True when the element should NOT participate in yoga (no flex root ancestor, or a boundary intervenes). */
    private _isInBoundary;
    /**
     * Yoga-side index for inserting at React's `reactIndex`, accounting for
     * skipped siblings (boundaries, flex roots). Append-at-end fast path
     * uses the cached count — turns O(N²) mass-mount into O(N).
     */
    private _yogaIndexFor;
    /** Maintains `_yogaParents` and `_yogaChildCounts` together so the fast path stays accurate. */
    private _setYogaParent;
    /** Counterpart of `_setYogaParent`. `parentId` passed explicitly since `_yogaParents.get` may already be cleared. */
    private _clearYogaParent;
    private _reattachChildren;
    trackElement(element: LightningElement): void;
    applyStyle(elementId: number, style?: Partial<LightningElementStyle> | null, skipRender?: boolean): void;
    private _applyUpdates;
}
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