import { Semigroup } from '../typeclasses/Semigroup';
declare function concat<T>(a: T, b: T): T;
declare function concat<T>(a: T[], b: T[]): T[];
declare function concat(a: number, b: number): number;
declare function concat(a: string, b: string): string;
declare function concat(a: boolean, b: boolean): boolean;
declare function concat<T extends Semigroup<any>>(a: T, b: T): T;
export default concat;