/** 键值对 */
export declare class KeyValue<K, V> {
    private keyToValue;
    private valueToKey;
    /**
     * `keys`和`values`数组中可以有相同的值, 若存在相同值, 则index越小的优先级越高
     */
    constructor(keys: K[], values: V[]);
    toKey(value: V): K;
    toValue(key: K): V;
}
export type KeySelector<T, K> = (this: T) => K;
/** 用key快速查找元素的数组 */
export declare class FastFindValues<T> {
    values: readonly T[];
    private maxSize4Debug;
    private map;
    constructor(values: readonly T[], maxSize4Debug?: number);
    /** 获取保存key-value映射的Map */
    getValueMap<K>(keySelector: KeySelector<T, K>): Map<K, T>;
    /**
     * 直接用key获取value
     * @param keySelector 从T中读取key的方法, 会用它当key, 缓存结果, 故多次调用需要使用相同的keySelector对象, 不要每次创建新的, 推荐直接使用T.prototype.getXxx作为keySelector
     */
    getOrNull<K>(keySelector: KeySelector<T, K>, key: K): T | undefined;
    get<K>(keySelector: KeySelector<T, K>, key: K): T;
}
/** 缓存的值 */
export declare class CachedValue<T> {
    private creator;
    private value;
    constructor(creator: () => T);
    get(): T;
}