type KeyFn<T> = (item: T) => any;
interface DiffResult<T> {
    added: T[];
    changed: {
        before: T;
        after: T;
    }[];
    unchanged: T[];
    removed: T[];
}
export declare function diffArrays<T>(oldArray: T[], newArray: T[], keyFn?: KeyFn<T>): DiffResult<T>;
export {};
//# sourceMappingURL=diffArrays.d.ts.map