import type { Delta } from "./types.js";
declare type Input = unknown;
export declare type ObjectHashFunction = (object: object, index?: number) => string;
export declare type DiffOptions = {
    /**
     * A function for generating a identifier from an object in order to produce more performant list update patches.
     */
    objectHash?: ObjectHashFunction;
    /** Whether you wanna force matching by array position. (Note: You do not wanna do this. Please specify a objectHash function :). */
    matchByPosition?: boolean;
    /**
     * Whether the previous value should be included in the diff.
     * This can drastically increase the patch size and should only be used for debugging
     * or cases where you need to perform more advanced consistency checks.
     *
     * Default: `false`
     * */
    includePreviousValue?: boolean;
};
export declare function diff(input: {
    left: Input;
    right: Input;
}, options?: DiffOptions): Delta;
export {};