/** Caches a value that must be loaded asynchronously. */
export default class CachedValue<T> {
    /** The cached value. */
    private cached;
    /** Loads the value to cache. */
    private loader;
    /** Construct given the loader. */
    constructor(loader: () => Promise<T>);
    /** Returns the cached value, loading it if needed. */
    value(): Promise<T>;
    /** Defines a cached value with the given loader. */
    static create<T>(loader: () => Promise<T>): CachedValue<T>;
}