export interface _<A> {
    "Array": Array<A>;
}
export declare type HKT = keyof _<any>;
export declare type $<F extends HKT, A> = _<A>[F];
import 'reflect-metadata';
export declare function datatype(name: string): (constructor: Function) => void;
export declare function datatypeOf(target: any): string;
export declare function kind<F extends HKT>(target: $<F, any>): F;