import { HKT } from "@tsplus/stdlib/prelude/HKT";
/**
 * @tsplus type Extend
 */
export interface Extend<F extends HKT> extends HKT.Typeclass<F> {
    readonly Law: {
        readonly Extend: "Extend";
    };
    readonly extend: <R, E, A, B>(f: (fa: HKT.Kind<F, R, E, A>) => B) => (fa: HKT.Kind<F, R, E, A>) => HKT.Kind<F, R, E, B>;
}
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