import type { ExtractionResult, ExtractionWarning } from '../types';
/**
 * Generic base class for all extractors (TypeScript and non-TypeScript)
 */
export declare abstract class BaseExtractor<TInput = unknown, TOutput = unknown> {
    protected config: unknown;
    constructor(config?: unknown);
    /**
     * Main extraction method - must be implemented by subclasses
     */
    abstract extract(input: TInput): Promise<ExtractionResult<TOutput>>;
    /**
     * Validate input before extraction - can be overridden
     */
    protected validateInput(input: TInput): boolean;
    /**
     * Handle extraction errors - can be overridden for custom error handling
     */
    protected handleError(error: unknown, context?: unknown): ExtractionResult<TOutput>;
    /**
     * Create a successful extraction result
     */
    protected createSuccessResult(data: TOutput, warnings?: ExtractionWarning[], sourceFile?: string, duration?: number): ExtractionResult<TOutput>;
    /**
     * Add warning to extraction result
     */
    protected addWarning(type: string, message: string, suggestion?: string): ExtractionWarning;
    /**
     * Clear any caches (useful for watch mode)
     */
    clearCache(): void;
}
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