import "./_dnt.polyfills.js";
import type { PromiseMaybe } from "./promise.js";
/**
 * 遍历 map 对象，将结果聚合 array 对象返回
 */
export declare const map_to_array: <K, V, R>(map: Map<K, V>, mapper: (value: V, key: K) => R) => R[];
export interface CommonMap<K = unknown, V = unknown> {
    has(key: K): boolean;
    get(key: K): V | undefined;
    set(key: K, value: V): unknown;
    delete(key: K): boolean;
}
type GetMapKey<T extends CommonMap> = T extends CommonMap<infer K> ? K : unknown;
type GetMapValue<T extends CommonMap> = T extends CommonMap<unknown, infer V> ? V : unknown;
/**
 * 读取一个map中的值，如果没有，就创建它
 */
export declare const map_get_or_put: <T extends CommonMap, K extends GetMapKey<T>>(map: T, key: K, put: (key: K, map: T) => GetMapValue<T>) => GetMapValue<T>;
/**
 * 删除一个map中的值，同时返回它
 */
export declare const map_delete_and_get: <T extends CommonMap, K extends GetMapKey<T>>(map: T, key: K) => GetMapValue<T> | undefined;
/**
 * 读取一个map中的值，如果没有，就异步地创建它
 * 使用该函数进行异步创建是会互斥上锁的（如果外部修改了map，写入了值，那么最终会以外部修改为准）
 */
export declare const map_get_or_put_async: <T extends CommonMap, K extends GetMapKey<T>>(map: T, key: K, put: (key: K, map: T) => PromiseMaybe<GetMapValue<T>>) => Promise<GetMapValue<T>>;
export {};
//# sourceMappingURL=map.d.ts.map