@bigfishtv/cockpit/src/utils/typeUtils.js

/**
 * Type Definition Utilities
 * @module Utilities/typeUtils
 */

/**
 * Returns true/false if provided value is numeric
 * @param  {*} value - Can be anything
 * @return {Boolean}
 */
export function isNumeric(val) {
	return !isNaN(parseFloat(val)) && isFinite(val)
}

/**
 * Returns true/false if provided value is an array
 * @param  {*} value - Can be anything
 * @return {Boolean}
 */
export function isArray(val) {
	return val instanceof Array
}

/**
 * Returns true/false if provided value is object (not array)
 * @param  {*} value - Can be anything
 * @return {Boolean}
 */
export function isObject(val) {
	return val !== null && typeof val === 'object' && !isArray(val)
}

/**
 * Returns true/false if provided value is a string
 * @param  {*} value - Can be anything
 * @return {Boolean}
 */
export function isString(val) {
	return typeof val === 'string'
}

/**
 * Returns true/false if provided value is a function
 * @param  {*} value - Can be anything
 * @return {Boolean}
 */
export function isFunction(val) {
	return typeof val === 'function'
}

/**
 * Works the same way as PHP's empty function
 * Recursively goes through an object/array and checks all key values
 * @param  {Object}  object Object/array
 * @return {Boolean}
 */
export function isEmpty(object) {
	if (!isObject(object) && !isArray(object)) return false

	let empty = true
	const keys = Object.keys(object)
	for (let key of keys) {
		const value = object[key]
		if (!(typeof value == 'undefined' || value === null || value === '')) empty = false
		else if (isObject(value) || isArray(value)) empty = isEmpty(value)
	}
	return empty
}

/**
 * Checks if provided variable is string and is url
 * @param  {String}
 * @return {Boolean}
 */
export function isUrl(str) {
	if (!isString(str)) return false
	const parser = document.createElement('a')
	parser.href = str
	return parser.host && parser.host != window.location.host
}