/**
 * Flowtype definitions for arrays
 * Generated by Flowgen from a Typescript Definition
 * Flowgen v1.21.0
 */

declare export function difference<T>(
  a: $ReadOnlyArray<T>,
  b: $ReadOnlyArray<T>
): $ReadOnlyArray<T>;
declare export function intersection<T>(
  a: $ReadOnlyArray<T>,
  b: $ReadOnlyArray<T>
): $ReadOnlyArray<T>;
declare export function first(): boolean;