declare const UNSET: {};
type MergeTwo<T, U> = {
    [K in keyof T | keyof U]: K extends keyof U ? U[K] : K extends keyof T ? T[K] : never;
};
interface Merge {
    <A>(a: A): A;
    <A, B>(a: A, b: B): MergeTwo<A, B>;
    <A, B, C>(a: A, b: B, c: C): MergeTwo<MergeTwo<A, B>, C>;
    <A, B, C, D>(a: A, b: B, c: C, d: D): MergeTwo<MergeTwo<MergeTwo<A, B>, C>, D>;
    <A, B, C, D, E>(a: A, b: B, c: C, d: D, e: E): MergeTwo<MergeTwo<MergeTwo<MergeTwo<A, B>, C>, D>, E>;
    <A, B, C, D, E, F>(a: A, b: B, c: C, d: D, e: E, f: F): MergeTwo<MergeTwo<MergeTwo<MergeTwo<MergeTwo<A, B>, C>, D>, E>, F>;
    <A, B, C, D, E, F, G>(a: A, b: B, c: C, d: D, e: E, f: F, g: G): MergeTwo<MergeTwo<MergeTwo<MergeTwo<MergeTwo<MergeTwo<A, B>, C>, D>, E>, F>, G>;
    <A, B, C, D, E, F, G, H>(a: A, b: B, c: C, d: D, e: E, f: F, g: G, h: H): MergeTwo<MergeTwo<MergeTwo<MergeTwo<MergeTwo<MergeTwo<MergeTwo<A, B>, C>, D>, E>, F>, G>, H>;
    <A, B extends object>(a: A, ...args: B[]): unknown;
}
declare const merge: Merge;
export { merge, UNSET as mergeUNSET, };
export type { MergeTwo, };
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