export declare function hasOwnProperty(obj: any, key: any): boolean;
export declare function _objectKeys(obj: any): any[];
/**
 * Deeply clone the object.
 * https://jsperf.com/deep-copy-vs-json-stringify-json-parse/25 (recursiveDeepCopy)
 * @param  {any} obj value to clone
 * @return {any} cloned obj
 */
export declare function _deepClone(obj: any): any;
export declare function isInteger(str: string): boolean;
/**
 * Escapes a json pointer path
 * @param path The raw pointer
 * @return the Escaped path
 */
export declare function escapePathComponent(path: string): string;
/**
 * Unescapes a json pointer path
 * @param path The escaped pointer
 * @return The unescaped path
 */
export declare function unescapePathComponent(path: string): string;
export declare function _getPathRecursive(root: Object, obj: Object): string;
export declare function getPath(root: Object, obj: Object): string;
/**
 * Recursively checks whether an object has any undefined values inside.
 */
export declare function hasUndefined(obj: any): boolean;
export type JsonPatchErrorName = "SEQUENCE_NOT_AN_ARRAY" | "OPERATION_NOT_AN_OBJECT" | "OPERATION_OP_INVALID" | "OPERATION_PATH_INVALID" | "OPERATION_FROM_REQUIRED" | "OPERATION_VALUE_REQUIRED" | "OPERATION_VALUE_CANNOT_CONTAIN_UNDEFINED" | "OPERATION_PATH_CANNOT_ADD" | "OPERATION_PATH_UNRESOLVABLE" | "OPERATION_FROM_UNRESOLVABLE" | "OPERATION_PATH_ILLEGAL_ARRAY_INDEX" | "OPERATION_VALUE_OUT_OF_BOUNDS" | "TEST_OPERATION_FAILED";
export declare class PatchError extends Error {
    name: JsonPatchErrorName;
    index?: number | undefined;
    operation?: any;
    tree?: any;
    constructor(message: string, name: JsonPatchErrorName, index?: number | undefined, operation?: any, tree?: any);
}