import {send, sendError, fetch, NowRequest, NowResponse} from '../util/http'; export default async function handler(req: NowRequest, res: NowResponse) { const {query} = req.query; if (!query) { return sendError(res, new Error('No query given')); } if (/[^a-zA-Z0-9_-]/.test(query)) { return sendError(res, new Error('Invalid characters')); } try { const response = await fetch( `https://${encodeURIComponent(query)}.slack.com`, ); const availability = response.status !== 200; send(res, {availability}); } catch (err) { sendError(res, err); } }