/**
 * An `Equivalence<A, B>` defines an equivalence between two types `A` and `B`.
 * These types represent different ways to store the same information.
 *
 * Equivalences are symmetrical. So if `A` is equivalent to `B`, then `B` is
 * equivalent to `A`.
 */
export interface Equivalence<A, B> {
    readonly to: (a: A) => B;
    readonly from: (b: B) => A;
}
export declare function Equivalence<A, B>(to: (a: A) => B, from: (b: B) => A): {
    to: (a: A) => B;
    from: (b: B) => A;
};
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