import { OCRResult } from '../types';
/**
 * Unified OCR Engine for React Native/Expo
 * Uses Google ML Kit for native OCR
 */
export declare class UnifiedOCREngine {
    private engine;
    private initialized;
    constructor();
    /**
     * Initialize the OCR engine with specified languages
     */
    initialize(languages: string[]): Promise<void>;
    /**
     * Recognize text from image
     * @param imageInput Image URI (file:// or content://)
     */
    recognize(imageInput: string): Promise<OCRResult>;
    /**
     * Terminate the OCR engine
     */
    terminate(): Promise<void>;
    /**
     * Check if engine is initialized
     */
    isInitialized(): boolean;
    /**
     * Get the current engine type
     */
    getEngineType(): 'mlkit';
}
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