/**
 * Eq provides an interface for equality checking of types that
 * are typically wrappers for other values. (e.g. Monads).
 */
export interface Eq<A> {
    /**
     * eq (equality test).
     */
    eq(e: A): boolean;
}
/**
 * valueEq preforms the equality test on two objects
 * that have a property called 'value'.
 */
export declare const valueEq: <A>(l: {
    value: A;
}) => (r: {
    value: A;
}) => boolean;