import { VNode } from 'vue';
import { TeleportManagerHandle } from './teleport-manager';
/**
 * Register (or unregister) a TeleportManager for a specific grid element.
 * Called from TbwGrid on mount/unmount.
 *
 * @param gridEl - The `<tbw-grid>` DOM element that owns the TeleportManager.
 * @param tm - The TeleportManager handle, or `null` to unregister.
 */
export declare function setTeleportManager(gridEl: HTMLElement, tm: TeleportManagerHandle | null): void;
/**
 * Get the TeleportManager handle for a specific grid element.
 * If no grid element is provided, returns the first available handle
 * (single-grid convenience).
 */
export declare function getTeleportManager(gridEl?: HTMLElement): TeleportManagerHandle | null;
/**
 * Render a Vue VNode into a DOM container.
 *
 * - If a TeleportManager is available for the owning grid, creates a teleport
 *   (context-preserving).
 * - Otherwise, falls back to `createApp()` (isolated tree, no context).
 *
 * @param container - The DOM element to render into.
 * @param vnode - The Vue VNode to render.
 * @param existingKey - Reuse a previously-returned key for updates.
 * @param gridEl - Explicit grid element (avoids DOM traversal).
 * @returns The teleport key (for future updates or removal).
 */
export declare function renderToContainer(container: HTMLElement, vnode: VNode, existingKey?: string, gridEl?: HTMLElement): string;
/**
 * Remove a teleport (or fallback app) by key.
 */
export declare function removeFromContainer(key: string): void;
/**
 * Remove all teleports and fallback apps for a specific grid.
 * Preferred over `clearAllContainers()` in multi-grid scenarios.
 */
export declare function clearContainersForGrid(gridEl: HTMLElement): void;
/**
 * Remove all teleports and fallback apps across all grids.
 * Use `clearContainersForGrid()` in multi-grid scenarios instead.
 */
export declare function clearAllContainers(): void;
/**
 * Wrap a Vue-returning render function as a vanilla `(ctx) => HTMLElement | null`
 * suitable for any grid renderer slot (cell renderer, group header, pinned-row
 * panel, etc.). Returns `null` when the Vue function returns `null` /
 * `undefined`, so built-in conditional renderers can opt out.
 *
 * The wrapper is a `<div style="display:contents">` so it imposes no layout.
 * Each call mounts a fresh teleport entry — call sites that need to update the
 * same container instead should use `renderToContainer` directly with
 * `existingKey`.
 */
export declare function createNodeBridge<TCtx>(vueFn: (ctx: TCtx) => VNode | null | undefined): (ctx: TCtx) => HTMLElement | null;
/**
 * Reset the key counter. Only use in tests.
 * @internal
 */
export declare function resetKeyCounter(): void;
/**
 * Reset all bridge state. Only use in tests.
 * Clears all TeleportManager registrations, key mappings, and fallback apps.
 * @internal
 */
export declare function resetBridge(): void;
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