import type { Arr, Merged } from '@toolbox-ts/types/defs/array';
import type { AnyDefined, DefinedPrimitive } from '@toolbox-ts/types';
import type { StringRecord } from '@toolbox-ts/types/defs/object';
import type { CombineOptions } from './types.js';
export declare const mergeConcat: <A extends Arr, B extends Arr[] | Arr = A>(a: A, b: B) => Merged<A, B>;
export declare const mergePrepend: <A extends Arr, B extends Arr[] | Arr = A>(a: A, b: B) => Merged<A, B>;
export interface MergeUniqueOpts<A extends Arr, B extends Arr[] | Arr, K = unknown> {
    keyFn?: (item: Merged<A, B>[number]) => K;
    end?: 'concat' | 'prepend';
}
export declare const mergeUnique: <A extends Arr, B extends Arr[] | Arr = A, K = unknown>(a: A, b: B, { end, keyFn }?: MergeUniqueOpts<A, B, K>) => Merged<A, B>;
export interface CombineHandlers {
    primitive: (curr: AnyDefined, next: DefinedPrimitive) => unknown;
    array: (curr: Arr, next: Arr) => unknown;
    object: (curr: StringRecord, next: StringRecord) => unknown;
    objectType: (curr: AnyDefined, next: object) => unknown;
}
export declare const mergeCombine: <A extends Arr, B extends Arr = A, R = (A[number] | B[number])[]>(a: A, b: B, { handlers: handle, clone: cl }?: CombineOptions) => R;