import { AnyRecord, SagaPlugin } from '../types';
type OptionalPropertyNames<T> = {
    [K in keyof T]-?: ({} extends {
        [P in K]: T[K];
    } ? K : never);
}[keyof T];
type SpreadProperties<L, R, K extends keyof L & keyof R> = {
    [P in K]: L[P] | Exclude<R[P], undefined>;
};
type Id<T> = T extends infer U ? {
    [K in keyof U]: U[K];
} : never;
type SpreadTwo<L, R> = Id<Pick<L, Exclude<keyof L, keyof R>> & Pick<R, Exclude<keyof R, OptionalPropertyNames<R>>> & Pick<R, Exclude<OptionalPropertyNames<R>, keyof L>> & SpreadProperties<L, R, OptionalPropertyNames<R> & keyof L>>;
type Spread<A extends readonly [...any]> = A extends [infer L, ...infer R] ? SpreadTwo<L, Spread<R>> : unknown;
export declare const merge: <A extends (AnyRecord | undefined)[]>(...a: A) => Spread<A>;
export declare const mergePlugins: <A extends SagaPlugin[]>(...plugins: A) => {
    main: Spread<{ [P in keyof A]: A[P]["main"]; }>;
    lower: Spread<{ [P_1 in keyof A]: A[P_1]["lower"]; }>;
    higher: Spread<{ [P_2 in keyof A]: A[P_2]["higher"]; }>;
};
export {};