import Dictionary from '../types/Dictionary';
/**
 * Simple object check.
 * Source: https://stackoverflow.com/questions/27936772/how-to-deep-merge-instead-of-shallow-merge
 * @param {Any} item
 * @param {Boolean} arrayIsObject
 * @returns {Boolean}
 */
export declare const isObject: (item: any, arrayIsObject?: boolean) => boolean;
/**
 * Check whether value is null or undefined is empty
 * @param {Any} value
 * @returns {Boolean}
 */
export declare const isNull: (value: any) => boolean;
/**
 * clone
 * deep clone javascript object
 * @param {Any} obj
 * @returns {Any}
 */
export declare const clone: (obj: any) => any;
/**
 * Deep merge two objects.
 * Source: https://stackoverflow.com/questions/27936772/how-to-deep-merge-instead-of-shallow-merge
 * @param {Object} target
 * @param {Object} sources
 * @returns {Object}
 */
export declare const mergeDeep: (target: Dictionary<any>, ...sources: Array<Dictionary<any>>) => Dictionary<any>;
/**
 * Deep compare two objects
 * Will not work with circular objects and only compares method names
 * @param {Any} obj1
 * @param {Any} obj2
 * @returns {Boolean}
 */
export declare const deepCompare: (obj1: any, obj2: any) => boolean;
/**
 * Call value if callable else return value
 * @param {Any} value
 * @param {any} context
 * @param {Any} args
 * @returns {Any}
 */
export declare const funcEval: (value: any, context?: any, ...args: Array<any>) => any;
/**
 * Call value if callable else use value to resolve Promise
 * @param {Any} value
 * @param {Any} context
 * @param {Any} args
 * @returns {Promise}
 */
export declare const promiseEval: (value: any, context?: any, ...args: Array<any>) => Promise<any>;
/**
 * Format string with placeholders
 * E.g. "Test String {value}" + {value: 5} = "Test String 5"
 * https://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format/18234317
 */
export declare const format: (str: string, args: Dictionary<any>) => string;
export declare const NO_VALUE: {};