require('isomorphic-fetch') const invariant = require('invariant') const CloudflareEmail = process.env.CLOUDFLARE_EMAIL const CloudflareKey = process.env.CLOUDFLARE_KEY const RayID = process.argv[2] invariant(CloudflareEmail, 'Missing the $CLOUDFLARE_EMAIL environment variable') invariant(CloudflareKey, 'Missing the $CLOUDFLARE_KEY environment variable') invariant( RayID, 'Missing the RAY_ID argument; use `heroku run node show-log.js RAY_ID`' ) function getZones(domain) { return fetch(`https://api.cloudflare.com/client/v4/zones?name=${domain}`, { method: 'GET', headers: { 'X-Auth-Email': CloudflareEmail, 'X-Auth-Key': CloudflareKey } }) .then(res => res.json()) .then(data => data.result) } function getLog(zoneId, rayId) { return fetch( `https://api.cloudflare.com/client/v4/zones/${zoneId}/logs/requests/${rayId}`, { method: 'GET', headers: { 'X-Auth-Email': CloudflareEmail, 'X-Auth-Key': CloudflareKey } } ).then(res => (res.status === 404 ? 'NOT FOUND' : res.json())) } getZones('unpkg.com').then(zones => { getLog(zones[0].id, RayID).then(entry => { console.log(entry) }) })