export type ArrayComparisonCategory<T> = {
    unchanged: T[];
    added: T[];
    updated: T[];
    deleted: {
        [x: string]: T[keyof T];
    }[];
    notFound: {
        [x: string]: T[keyof T];
    }[];
};
export declare class ArrayComparisonCategorizer<T> {
    private incomingArray;
    private existingArray;
    private keyProperty;
    private arrayComparisonCategory;
    constructor(incomingArray: T[] | undefined, existingArray: T[] | undefined, keyProperty: keyof T);
    private get existingMap();
    private isExistingItem;
    private isMarkForDeletion;
    private isIdentifierPresent;
    compare(): ArrayComparisonCategory<T>;
    get category(): ArrayComparisonCategory<T> | null;
    merge(): T[];
}