export const isValidUrl = (url: string) => { try { new URL(url) return true } catch (_) { return false } } export const isValidImageUrl = (url: string) => { const regex = /\.(jpeg|jpg|gif|png)$/ return regex.test(url) } export const isReachable = async (url: string) => { try { const response = await fetch(url, { method: 'HEAD' }) return response.ok } catch (error) { return false } }