import { SQLiteHTTPPool, VFSHTTP } from 'sqlite-wasm-http';
import { Options as ImageTileOptions } from 'ol/source/TileImage.js';
import { Options as OLVectorTileOptions } from 'ol/source/VectorTile.js';
import TileGrid from 'ol/tilegrid/TileGrid.js';
import { FeatureLike } from 'ol/Feature.js';
type IfAny<T, Y, N> = 0 extends 1 & T ? Y : N;
type VectorTileOptions = IfAny<OLVectorTileOptions<FeatureLike>, OLVectorTileOptions, OLVectorTileOptions<FeatureLike>>;
/**
 * Options for creating a MBTilesRasterSource
 */
export interface MBTilesRasterOptions extends ImageTileOptions {
    /**
     * Number of parallel workers to use for retrieving tiles, @default 4
     */
    sqlWorkers?: number;
    /**
     * List of layer names to selectively include, @default everything
     */
    layers?: string[];
    tileUrlFunction?: never;
    tileLoadFunction?: never;
    /**
     * Alternative method of specifying minZoom, mutually exclusive with tileGrid, requires explicit projection.
     * This refers to the available zoom levels of the tiled data and it is different from the OpenLayers minZoom
     * parameter that applies to the layer.
     */
    minZoom?: number;
    /**
     * Alternative method of specifying maxZoom, mutually exclusive with tileGrid, requires explicit projection
     * This refers to the available zoom levels of the tiled data and it is different from the OpenLayers maxZoom
     * parameter that applies to the layer.
     */
    maxZoom?: number;
    /**
     * Optional tile grid, refer to the Openlayers manual
     */
    tileGrid?: TileGrid;
    /**
     * Optional already open SQLiteHTTP pool (mutually exclusive with url)
     */
    pool?: Promise<SQLiteHTTPPool>;
    /**
     * Optional MIME type for loaded tiles (see https://github.com/mmomtchev/ol-mbtiles/issues/68)
     */
    mime?: string;
}
/**
 * Options for creating a MBTilesVectorSource
 */
export interface MBTilesVectorOptions extends VectorTileOptions {
    /**
     * Number of parallel workers to use for retrieving tiles, @default 4
     */
    sqlWorkers?: number;
    /**
     * List of layer names to selectively include, @default everything
     */
    layers?: string[];
    /**
     * Minimum available zoom level.
     * This refers to the available zoom levels of the tiled data and it is different from the OpenLayers minZoom
     * parameter that applies to the layer.
     */
    minZoom?: number;
    /**
     * Maximum available zoom level.
     * This refers to the available zoom levels of the tiled data and it is different from the OpenLayers maxZoom
     * parameter that applies to the layer.
     */
    maxZoom?: number;
    /**
     * Optional already open SQLiteHTTP pool (mutually exclusive with url)
     */
    pool?: Promise<SQLiteHTTPPool>;
    tileUrlFunction?: never;
    tileLoadFunction?: never;
    format?: never;
}
/**
 * Shared options for all MBTiles
 */
export interface SQLOptions {
    /**
     * URL of the remote MBTiles source
     */
    url: string;
    /**
     * Number of parallel workers to use for retrieving tiles, @default 4
     */
    sqlWorkers?: number;
    /**
     * Maximum expected page size in bytes for SQLite3 files, @default 4096
     */
    maxSqlPageSize?: number;
    /**
     * Memory to use for SQLite cache in KB, @default 4096
     */
    sqlCacheSize?: number;
    /**
     * Use a specific backend type, @default 'shared'
     */
    backendType?: VFSHTTP.Options['backendType'];
}
export type MBTilesOptions = MBTilesVectorOptions | MBTilesRasterOptions;
export declare function httpPoolOptions(options?: SQLOptions): {
    workers: number;
    httpOptions: VFSHTTP.Options;
};
/**
 * Automatically import MBTiles metadata and return an options object
 * compatible with the source constructors.
 *
 * @param {(MBTilesRasterOptions | MBTilesVectorOptions) & SQLOptions} opt Any MBTiles{Raster|Vector}Source options to be overridden
 * @param {string} opt.url URL of the remote tileset
 * @returns {(MBTilesRasterOptions | MBTilesVectorOptions)}
 */
export declare function importMBTiles<T extends MBTilesOptions>(opt: SQLOptions & T): Promise<T & SQLOptions>;
export {};