Credit to WoWAnalyzer for this snippet
const HTTP_CODES = {
OK: 200,
BAD_REQUEST: 400,
UNAUTHORIZED: 401,
CLOUDFLARE: {
UNKNOWN_ERROR: 520,
WEB_SERVER_IS_DOWN: 521,
CONNECTION_TIMED_OUT: 522,
ORIGIN_IS_UNREACHABLE: 523,
A_TIMEOUT_OCCURED: 524,
},
};