Util functions from lodash in pure JS:: _.isObject, _.isString, _.isNumber, _.isFunction, _.isBoolean, _.isArray, _.isRegExp

util-types.js

/**
 * util-types could be used to replace some methods of lodash such as:
 * _.isObject
 * _.isString
 * _.isNumber
 * _.isFunction
 * _.isBoolean
 * _.isArray
 * _.isRegExp
 */

/**
 * getType receive a value and return the type of the value (e.g [] => Array || {} => Object)
 * @param {any} value - Value that will be checked the type
 * @return {string} return the type of value (e.g. String, Object, Array, ...)
 */
export const getType = (value) => Object.prototype.toString.call(value).match(/^\[object\s(.*)\]$/)[1];

/**
 * isObject check the value for Object type
 * @param {any} value - A value that will be checked if is an object
 * @return {boolean} return true when the value is an object
 */
export const isObject = (value) => getType(value) === 'Object';

/**
 * isString check the value for String type
 * @param {any} value - A value that will be checked if is a String
 * @return {boolean} return true when the value is a string
 */
export const isString = (value) => getType(value) === 'String';

/**
 * isNumber check the value for Number type
 * @param {any} value - A value that will be checked if is a Number
 * @return {boolean} return true when the value is a Number
 */
export const isNumber = (value) => getType(value) === 'Number';

/**
 * isFunction check the value for Function type
 * @param {any} value - A value that will be checked if is a Function
 * @return {boolean} return true when the value is a Function
 */
export const isFunction = (value) => getType(value) === 'Function';

/**
 * isBoolean check the value for Boolean type
 * @param {any} value - A value that will be checked if is a Boolean
 * @return {boolean} return true when the value is a Boolean
 */
export const isBoolean = (value) => getType(value) === 'Boolean';

/**
 * isArray check the value for Array type
 * @param {any} value - A value that will be checked if is an Array
 * @return {boolean} return true when the value is an Array
 */
export const isArray = (value) => Array.isArray(value);

/**
 * isRegExp check the value for RegExp type
 * @param {any} value - A value that will be checked if is a RegExp
 * @return {boolean} return true when the value is a RegExp
 */
export const isRegExp = (value) => getType(value) === 'RegExp';

export default {
  getType,
  isObject,
  isString,
  isNumber,
  isFunction,
  isBoolean,
  isArray
};