@lou.codes/iterables/dist/range.js

🔁 Iterable and AsyncIterable utils

import { createIterableIterator } from "./createIterableIterator.js";
/**
 * Range iterable generator (from `from` to `to`).
 *
 * @category Generators
 * @example
 * ```typescript
 * [...range(1)(0)(5)]; // [0, 1, 2, 3, 4, 5]
 * [...range(1)(5)(0)]; // [5, 4, 3, 2, 1, 0]
 * ```
 * @param step Step size.
 * @returns Curried function with `step` set in context.
 */
export const range = step => from => to =>
	createIterableIterator(function* () {
		// eslint-disable-next-line functional/no-loop-statements
		for (
			let current = from;
			from < to ? current <= to : current >= to;
			// eslint-disable-next-line @typescript-eslint/restrict-plus-operands
			current += from < to ? step : -step
		) {
			yield current;
		}
	});