/**
 * ext-document-kreuzberg: document text extraction for Veryfront.
 *
 * Provides the `DocumentExtractor` contract via kreuzberg. Deno extraction can
 * run inside an isolated Worker so a hung WASM call does not block the server.
 *
 * @module extensions/ext-document-kreuzberg
 */
import "../../../_dnt.polyfills.js";
import type { ExtensionFactory, ExtensionLogger } from "veryfront/extensions";
import type { DocumentExtractionOptions, DocumentExtractor, KreuzbergExtractor } from "veryfront/extensions/compat";
export declare const NATIVE_PROGRESS_IDLE_TIMEOUT_MS = 120000;
export declare const NATIVE_PROGRESS_HARD_TIMEOUT_MS: number;
/** Maximum time to wait for fallback worker extraction before aborting. */
export declare const EXTRACTION_TIMEOUT_MS: number;
declare function extractInWorkerDeno(buffer: ArrayBuffer, mimeType: string): Promise<string>;
export interface KreuzbergDocumentExtractorDeps {
    isDenoRuntime?: boolean;
    loadNativeKreuzberg?: () => Promise<KreuzbergExtractor>;
    extractInWorkerDeno?: typeof extractInWorkerDeno;
    extractWithNativeProgressDeno?: typeof extractWithNativeProgressDeno;
    logger?: Pick<ExtensionLogger, "warn">;
}
declare function extractWithNativeProgressDeno(buffer: ArrayBuffer, mimeType: string, options: DocumentExtractionOptions): Promise<string>;
export declare class KreuzbergDocumentExtractor implements DocumentExtractor {
    private readonly deps;
    constructor(deps?: KreuzbergDocumentExtractorDeps);
    importKreuzberg(): Promise<KreuzbergExtractor>;
    extractInWorker(buffer: ArrayBuffer, mimeType: string, options?: DocumentExtractionOptions): Promise<string>;
}
declare const extDocumentKreuzberg: ExtensionFactory;
export default extDocumentKreuzberg;
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