/**
 * @typedef {Object} ExtentDataOptions
 * @property {import('./source_resolver.js').SourceResolver} sourceResolver
 * @property {import('./parquet_bbox_reader.js').ParquetBboxReader} [bboxReader]
 * @property {import('./duckdb_adapter.js').DuckDBClient} [duckdb] - Required for parquet bbox queries
 */
export class ExtentData {
    /**
     * @param {ExtentDataOptions} options
     */
    constructor({ sourceResolver, bboxReader, duckdb }: ExtentDataOptions);
    _sourceResolver: import("./source_resolver.js").SourceResolver;
    _bboxReader: ParquetBboxReader;
    _duckdb: import("./duckdb_adapter.js").DuckDBClient;
    _cancelGeneration: number;
    _abortController: AbortController;
    /**
     * Attach or replace the DuckDB client used for parquet metadata fallback.
     * @param {import('./duckdb_adapter.js').DuckDBClient | null} duckdb
     */
    setDuckDB(duckdb: import("./duckdb_adapter.js").DuckDBClient | null): void;
    cancel(): void;
    /**
     * Fetch file-level and row-group-level extent data for a source.
     *
     * @param {object} options
     * @param {string} options.sourceUrl - Source route URL
      * @param {boolean} [options.includeRowGroups=true] - Whether to fetch row-group bboxes
      * @param {string} [options.bboxColumn] - Explicit bbox struct column name (e.g. 'bbox')
      *   to use for row-group stats when GeoParquet covering metadata is absent.
      * @param {(msg: string) => void} [options.onStatus] - Status callback
      * @param {AbortSignal} [options.signal] - Abort signal for cancelling extent loading.
      * @returns {Promise<{
      *   dataExtents: Object<string, number[]> | null,
      *   rgExtents: Object<string, Object<string, number[]>> | null
      * }>}
      */
    fetchExtents({ sourceUrl, includeRowGroups, bboxColumn, onStatus, signal }: {
        sourceUrl: string;
        includeRowGroups?: boolean;
        bboxColumn?: string;
        onStatus?: (msg: string) => void;
        signal?: AbortSignal;
    }): Promise<{
        dataExtents: {
            [x: string]: number[];
        } | null;
        rgExtents: {
            [x: string]: {
                [x: string]: number[];
            };
        } | null;
    }>;
    _isCancelled(runGeneration: any, signal: any): any;
    _throwIfCancelled(runGeneration: any, signal: any): void;
}
export type ExtentDataOptions = {
    sourceResolver: import("./source_resolver.js").SourceResolver;
    bboxReader?: import("./parquet_bbox_reader.js").ParquetBboxReader;
    /**
     * - Required for parquet bbox queries
     */
    duckdb?: import("./duckdb_adapter.js").DuckDBClient;
};
import { ParquetBboxReader } from './parquet_bbox_reader.js';