import { Box } from "./box";
import { Voidable } from "./maybe";
/** Lazy initialization */
export declare class Lazy<T> implements Box<Voidable<T>> {
    #private;
    val: Voidable<T>;
    constructor(init: () => T);
    /** Get the value, if not initialized, the initialization function will be called */
    get(): T;
    /** Return is already initialized */
    got(): boolean;
    /** Reinitialize */
    reget(): T;
}
/** Lazy initialization */
export declare function lazy<T>(init: () => T): Lazy<T>;
/** Async Lazy */
export declare type ALazy<T> = Lazy<Promise<T>>;