/**
 * Handy class for managing asynchronous dependencies of classes.
 *
 * Will call the producer function once and only once when getValue is called,
 * returning the resultant value for every subsequent call.
 */
export declare class Lazy<T> {
    private producerFn;
    constructor(producerFn: () => T);
    private value;
    /**
     * Lazily get the value returned by the producer.
     * @returns The value returned from the producer function
     */
    getValue(): T;
}
/**
 * Handy class for managing asynchronous dependencies of classes.
 *
 * Will call asynchronous producer only after `getValue` is called.  If the
 * deferred code errors, we can try it again by re-calling `getValue` after
 * the promise rejects.
 */
export declare class AsyncRetryableLazy<T> {
    private producerFn;
    constructor(producerFn: () => Promise<T>);
    private promise?;
    /**
     * Lazily get the value returned by the async producer.
     *
     * @returns The value returned from the producer function
     */
    getValue(): Promise<T>;
}