import type { Semigroup } from "@principia/prelude";
import type { NonEmptyArray } from "./model";
/**
 * ```haskell
 * fold :: Semigroup s => s a -> NonEmptyArray a -> a
 * ```
 */
export declare const fold: <A>(S: Semigroup<A>) => (as: NonEmptyArray<A>) => A;
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