export const isValidURL = (url) => { const pattern = new RegExp('^(https?:\\/\\/)?' // protocol + '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' // domain name + '((\\d{1,3}\\.){3}\\d{1,3}))' // OR ip (v4) address + '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' // port and path + '(\\?[;&a-z\\d%_.~+=-]*)?' // query string + '(\\#[-a-z\\d_]*)?$', 'i'); // fragment locator return !!pattern.test(url); };