import isURL from 'validator/lib/isURL'; import { send, sendError, fetch } from '../../../util/http'; import { VercelRequest, VercelResponse } from '@vercel/node'; export default async function handler( req: VercelRequest, res: VercelResponse ): Promise { const { query, existIf = '404' } = req.query; const availableStatus = (existIf as string).split(',').map((s) => s.trim()); if (!query || typeof query !== 'string') { return sendError(res, new Error('no query given')); } if (!isURL(query)) { return sendError(res, new Error('Invalid URL: ' + query)); } try { const response = await fetch(`https://${query}`); const availability = availableStatus.includes(response.status.toString()); send(res, { availability }); } catch (err: any) { if ((err as any).code === 'ENOTFOUND') { return send(res, { availability: true }); } sendError(res, err); } }