import { Promised } from "./utils";
declare global {
    interface Generator<T = unknown, TReturn = any, TNext = unknown> {
        /**
         * Creates a dictionary from a generator according to a
         * specified key selector function.
         * @param key_selector A function to extract a key from each element.
         * @returns A dictionary that contains values of type selected from the input sequence.
         */
        dictionary<TKey extends number | string>(key_selector: (item: T) => TKey): Record<TKey, T>;
        /**
         * Creates a dictionary from a generator according to
         * specified key selector and element selector functions.
         * @param key_selector A function to extract a key from each element.
         * @param value_selector A transform function to produce a result element value from each element.
         * @returns A dictionary that contains values of type selected from the input sequence.
         */
        dictionary<TKey extends number | string, TResult>(key_selector: (item: T) => TKey, value_selector: (item: T) => TResult): Record<TKey, TResult>;
    }
    interface AsyncGenerator<T = unknown, TReturn = any, TNext = unknown> {
        /**
         * Creates a dictionary from a generator according to a
         * specified key selector function.
         * @param key_selector A function to extract a key from each element.
         * @returns A dictionary that contains values of type selected from the input sequence.
         */
        dictionary<TKey extends number | string>(key_selector: (item: T) => Promised<TKey>): Promise<Record<TKey, T>>;
        /**
         * Creates a dictionary from a generator according to
         * specified key selector and element selector functions.
         * @param key_selector A function to extract a key from each element.
         * @param value_selector A transform function to produce a result element value from each element.
         * @returns A dictionary that contains values of type selected from the input sequence.
         */
        dictionary<TKey extends number | string, TResult>(key_selector: (item: T) => Promised<TKey>, value_selector: (item: T) => Promised<TResult>): Promise<Record<TKey, TResult>>;
    }
}