import { BMapInstance } from '../types';
/** Map API 统一形状（BMap 与 BMapGL 兼容部分） @internal */
export type MapAPI = Pick<typeof BMap, 'Map' | 'Point' | 'LocalSearch' | 'Bounds'>;
/**
 * Check if BMap is available on window.
 * @internal
 */
export declare function isBMapLoaded(): boolean;
/**
 * Check if BMapGL (JSAPI GL) is available on window.
 * @internal
 */
export declare function isBMapGLLoaded(): boolean;
/**
 * Get BMap or BMapGL. Prefer BMapGL when loaded (examples use JSAPI GL).
 * Throws if neither is loaded.
 * @internal
 */
export declare function requireMapAPI(): MapAPI;
/**
 * Get BMap global. Throws if not loaded.
 * @internal
 */
export declare function requireBMap(): typeof BMap;
/**
 * Get BMapGL global. Throws if not loaded.
 * @internal
 */
export declare function requireBMapGL(): typeof BMapGL;
/**
 * Get map instance from option or throw. Used when a component requires a map.
 * @internal
 */
export declare function requireMap(map?: BMapInstance): BMapInstance;
/**
 * Get map if provided, otherwise undefined. Does not throw.
 * @internal
 */
export declare function getMap(map?: BMapInstance): BMapInstance | undefined;