export declare class Enumerable<TSource> implements Iterable<TSource> {
    [Symbol.iterator](): IterableIterator<TSource>;
    toString(): string;
    static from<T>(source: Iterable<T>): Enumerable<T>;
    static empty<TSource>(): Enumerable<TSource>;
    static range(start: number, count: number): Enumerable<number>;
    static repeat<TResult>(element: TResult, count: number): Enumerable<TResult>;
}