/**
 * DOM tree indexing for server-side directive discovery.
 *
 * @packageDocumentation
 */
import { Expression, Directive } from '../types.js';
import { ContextKey } from '../context-registry.js';
import type { DirectiveRegistry } from './render.js';
/**
 * An indexed directive instance found in the DOM.
 *
 * @internal
 */
export interface IndexedDirective {
    el: Element;
    name: string;
    directive: Directive | null;
    expr: Expression;
    priority: number;
    isNativeSlot?: boolean;
    isCustomElement?: boolean;
    using?: ContextKey<unknown>[];
}
/**
 * Build a CSS selector for all registered directives.
 * Uses the global directive registry to support any prefix (g-, l-, v-, etc.).
 * Also includes local registry entries with g- prefix for backward compatibility.
 *
 * @internal
 */
export declare function getSelector(localRegistry?: DirectiveRegistry): string;
/**
 * Index all directive elements in a subtree.
 * Discovers elements matching the selector and builds an ordered list
 * of directives to process.
 *
 * @param root - The DOM subtree root to scan
 * @param selector - CSS selector matching directive elements
 * @param registry - Local directive registry for backward compatibility
 * @param index - Accumulator for discovered directives (mutated in place)
 * @param indexed - Set tracking already-indexed elements (mutated in place)
 *
 * @internal
 */
export declare function indexTree(root: any, selector: string, registry: DirectiveRegistry, index: IndexedDirective[], indexed: Set<Element>): void;