// Type definitions for shuffle-array
// Project: https://github.com/pazguille/shuffle-array
// Definitions by: rhysd <https://rhysd.github.io>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

declare module "shuffle-array" {
	/**
	 * copy - Sets if should return a shuffled copy of the given array. By default it's a falsy value.
	 * rng - Specifies a custom random number generator.
	 */
	interface ShuffleOption {
		copy?: boolean;
		rng?: () => number;
	}
	/**
	 * picks - Specifies how many random elements you want to pick. By default it picks 1.
	 * rng - Specifies a custom random number generator.
	 */
	interface PickOption {
		picks?: number;
		rng?: () => number;
	}
	interface ShuffleArray {
		/**
		 * Randomizes the order of the elements in a given array.
		 *
		 * arr - The given array.
		 * options - Optional configuration options.
		 */
		<T>(arr: T[], options?: ShuffleOption): T[];
		/**
		 * Pick one or more random elements from the given array.
		 *
		 * arr - The given array.
		 * options - Optional configuration options.
		 */
		pick<T>(arr: T[], options?: Object): T[];
	}
	var shuffle: ShuffleArray;
	export = shuffle;
}