/**
 * Creates an iterable of numbers (positive and/or negative)
 * progressing from start up to, but not including, end. A step
 * of -1 is used if a negative start is specified without an end
 * or step. If end is not specified, it's set to start with start
 * then set to 0.
 */
export declare function range(startOrEnd: number, end: number, step?: number): AsyncGenerator<number, void, unknown>;