/**
 * Create an iterator of evenly spaced values.
 *
 * @param start - The starting value for the range, inclusive.
 *
 * @param stop - The stopping value for the range, exclusive.
 *
 * @param step - The distance between each value.
 *
 * @returns An iterator which produces evenly spaced values.
 *
 * #### Notes
 * In the single argument form of `range(stop)`, `start` defaults to
 * `0` and `step` defaults to `1`.
 *
 * In the two argument form of `range(start, stop)`, `step` defaults
 * to `1`.
 *
 * #### Example
 * ```typescript
 * import { range } from '@lumino/algorithm';
 *
 * let stream = range(2, 4);
 *
 * Array.from(stream);  // [2, 3]
 * ```
 */
export declare function range(start: number, stop?: number, step?: number): IterableIterator<number>;