/**
 * Core Annotation Engine
 * Handles text selection, range serialization, and annotation rendering
 */
import type { Annotation, AnnotationTarget } from "./types";
export declare class AnnotationEngine {
    private root;
    private rendered;
    constructor(root?: HTMLElement);
    /**
     * Create annotation from current text selection
     */
    createFromSelection(): AnnotationTarget | null;
    /**
     * Render annotation on page
     */
    render(annotation: Annotation): boolean;
    /**
     * Remove annotation from page
     */
    remove(annotationId: string): void;
    /**
     * Remove all annotations
     */
    removeAll(): void;
    /**
     * Clean up any malformed annotation marks (e.g., from previous versions)
     */
    cleanupMalformed(): void;
    /**
     * Find suitable container element for annotation
     */
    private findContainer;
    /**
     * Generate CSS selector for element
     */
    private generateSelector;
    /**
     * Get character offsets relative to container
     */
    private getOffsets;
    /**
     * Create Range from serialized target
     */
    private createRange;
    /**
     * Apply visual highlight to range
     */
    private applyHighlight;
    /**
     * Get all text nodes within a range with their offsets
     */
    private getTextNodesInRange;
    /**
     * Check if a node is within a range
     */
    private isNodeInRange;
    /**
     * Apply annotation styles
     */
    private applyStyle;
}
export declare const engine: AnnotationEngine;