import type { Eq } from "@principia/prelude/Eq";
export declare const fromSet: <A>(s: Set<A>) => ReadonlySet<A>;
export declare const empty: ReadonlySet<never>;
export declare const singleton: <A>(a: A) => ReadonlySet<A>;
export declare const fromArray_: <A>(as: readonly A[], E: Eq<A>) => ReadonlySet<A>;
export declare const fromArray: <A>(E: Eq<A>) => (as: readonly A[]) => ReadonlySet<A>;
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