void set_status_message_from_code(JSContext *cx, JSObject *obj, uint16_t code) {
  auto phrase = "";

  switch (code) {
  case 100: // 100 Continue - https://tools.ietf.org/html/rfc7231#section-6.2.1
    phrase = "Continue";
    break;
  case 101: // 101 Switching Protocols - https://tools.ietf.org/html/rfc7231#section-6.2.2
    phrase = "Switching Protocols";
    break;
  case 102: // 102 Processing - https://tools.ietf.org/html/rfc2518
    phrase = "Processing";
    break;
  case 200: // 200 OK - https://tools.ietf.org/html/rfc7231#section-6.3.1
    phrase = "OK";
    break;
  case 201: // 201 Created - https://tools.ietf.org/html/rfc7231#section-6.3.2
    phrase = "Created";
    break;
  case 202: // 202 Accepted - https://tools.ietf.org/html/rfc7231#section-6.3.3
    phrase = "Accepted";
    break;
  case 203: // 203 Non-Authoritative Information - https://tools.ietf.org/html/rfc7231#section-6.3.4
    phrase = "Non Authoritative Information";
    break;
  case 204: // 204 No Content - https://tools.ietf.org/html/rfc7231#section-6.3.5
    phrase = "No Content";
    break;
  case 205: // 205 Reset Content - https://tools.ietf.org/html/rfc7231#section-6.3.6
    phrase = "Reset Content";
    break;
  case 206: // 206 Partial Content - https://tools.ietf.org/html/rfc7233#section-4.1
    phrase = "Partial Content";
    break;
  case 207: // 207 Multi-Status - https://tools.ietf.org/html/rfc4918
    phrase = "Multi-Status";
    break;
  case 208: // 208 Already Reported - https://tools.ietf.org/html/rfc5842
    phrase = "Already Reported";
    break;
  case 226: // 226 IM Used - https://tools.ietf.org/html/rfc3229
    phrase = "IM Used";
    break;
  case 300: // 300 Multiple Choices - https://tools.ietf.org/html/rfc7231#section-6.4.1
    phrase = "Multiple Choices";
    break;
  case 301: // 301 Moved Permanently - https://tools.ietf.org/html/rfc7231#section-6.4.2
    phrase = "Moved Permanently";
    break;
  case 302: // 302 Found - https://tools.ietf.org/html/rfc7231#section-6.4.3
    phrase = "Found";
    break;
  case 303: // 303 See Other - https://tools.ietf.org/html/rfc7231#section-6.4.4
    phrase = "See Other";
    break;
  case 304: // 304 Not Modified - https://tools.ietf.org/html/rfc7232#section-4.1
    phrase = "Not Modified";
    break;
  case 305: // 305 Use Proxy - https://tools.ietf.org/html/rfc7231#section-6.4.5
    phrase = "Use Proxy";
    break;
  case 307: // 307 Temporary Redirect - https://tools.ietf.org/html/rfc7231#section-6.4.7
    phrase = "Temporary Redirect";
    break;
  case 308: // 308 Permanent Redirect - https://tools.ietf.org/html/rfc7238
    phrase = "Permanent Redirect";
    break;
  case 400: // 400 Bad Request - https://tools.ietf.org/html/rfc7231#section-6.5.1
    phrase = "Bad Request";
    break;
  case 401: // 401 Unauthorized - https://tools.ietf.org/html/rfc7235#section-3.1
    phrase = "Unauthorized";
    break;
  case 402: // 402 Payment Required - https://tools.ietf.org/html/rfc7231#section-6.5.2
    phrase = "Payment Required";
    break;
  case 403: // 403 Forbidden - https://tools.ietf.org/html/rfc7231#section-6.5.3
    phrase = "Forbidden";
    break;
  case 404: // 404 Not Found - https://tools.ietf.org/html/rfc7231#section-6.5.4
    phrase = "Not Found";
    break;
  case 405: // 405 Method Not Allowed - https://tools.ietf.org/html/rfc7231#section-6.5.5
    phrase = "Method Not Allowed";
    break;
  case 406: // 406 Not Acceptable - https://tools.ietf.org/html/rfc7231#section-6.5.6
    phrase = "Not Acceptable";
    break;
  case 407: // 407 Proxy Authentication Required - https://tools.ietf.org/html/rfc7235#section-3.2
    phrase = "Proxy Authentication Required";
    break;
  case 408: // 408 Request Timeout - https://tools.ietf.org/html/rfc7231#section-6.5.7
    phrase = "Request Timeout";
    break;
  case 409: // 409 Conflict - https://tools.ietf.org/html/rfc7231#section-6.5.8
    phrase = "Conflict";
    break;
  case 410: // 410 Gone - https://tools.ietf.org/html/rfc7231#section-6.5.9
    phrase = "Gone";
    break;
  case 411: // 411 Length Required - https://tools.ietf.org/html/rfc7231#section-6.5.10
    phrase = "Length Required";
    break;
  case 412: // 412 Precondition Failed - https://tools.ietf.org/html/rfc7232#section-4.2
    phrase = "Precondition Failed";
    break;
  case 413: // 413 Payload Too Large - https://tools.ietf.org/html/rfc7231#section-6.5.11
    phrase = "Payload Too Large";
    break;
  case 414: // 414 URI Too Long - https://tools.ietf.org/html/rfc7231#section-6.5.12
    phrase = "URI Too Long";
    break;
  case 415: // 415 Unsupported Media Type - https://tools.ietf.org/html/rfc7231#section-6.5.13
    phrase = "Unsupported Media Type";
    break;
  case 416: // 416 Range Not Satisfiable - https://tools.ietf.org/html/rfc7233#section-4.4
    phrase = "Range Not Satisfiable";
    break;
  case 417: // 417 Expectation Failed - https://tools.ietf.org/html/rfc7231#section-6.5.14
    phrase = "Expectation Failed";
    break;
  case 418: // 418 I'm a teapot - https://tools.ietf.org/html/rfc2324
    phrase = "I'm a teapot";
    break;
  case 421: // 421 Misdirected Request - http://tools.ietf.org/html/rfc7540#section-9.1.2
    phrase = "Misdirected Request";
    break;
  case 422: // 422 Unprocessable Entity - https://tools.ietf.org/html/rfc4918
    phrase = "Unprocessable Entity";
    break;
  case 423: // 423 Locked - https://tools.ietf.org/html/rfc4918
    phrase = "Locked";
    break;
  case 424: // 424 Failed Dependency - https://tools.ietf.org/html/rfc4918
    phrase = "Failed Dependency";
    break;
  case 426: // 426 Upgrade Required - https://tools.ietf.org/html/rfc7231#section-6.5.15
    phrase = "Upgrade Required";
    break;
  case 428: // 428 Precondition Required - https://tools.ietf.org/html/rfc6585
    phrase = "Precondition Required";
    break;
  case 429: // 429 Too Many Requests - https://tools.ietf.org/html/rfc6585
    phrase = "Too Many Requests";
    break;
  case 431: // 431 Request Header Fields Too Large - https://tools.ietf.org/html/rfc6585
    phrase = "Request Header Fields Too Large";
    break;
  case 451: // 451 Unavailable For Legal Reasons - http://tools.ietf.org/html/rfc7725
    phrase = "Unavailable For Legal Reasons";
    break;
  case 500: // 500 Internal Server Error - https://tools.ietf.org/html/rfc7231#section-6.6.1
    phrase = "Internal Server Error";
    break;
  case 501: // 501 Not Implemented - https://tools.ietf.org/html/rfc7231#section-6.6.2
    phrase = "Not Implemented";
    break;
  case 502: // 502 Bad Gateway - https://tools.ietf.org/html/rfc7231#section-6.6.3
    phrase = "Bad Gateway";
    break;
  case 503: // 503 Service Unavailable - https://tools.ietf.org/html/rfc7231#section-6.6.4
    phrase = "Service Unavailable";
    break;
  case 504: // 504 Gateway Timeout - https://tools.ietf.org/html/rfc7231#section-6.6.5
    phrase = "Gateway Timeout";
    break;
  case 505: // 505 HTTP Version Not Supported - https://tools.ietf.org/html/rfc7231#section-6.6.6
    phrase = "HTTP Version Not Supported";
    break;
  case 506: // 506 Variant Also Negotiates - https://tools.ietf.org/html/rfc2295
    phrase = "Variant Also Negotiates";
    break;
  case 507: // 507 Insufficient Storage - https://tools.ietf.org/html/rfc4918
    phrase = "Insufficient Storage";
    break;
  case 508: // 508 Loop Detected - https://tools.ietf.org/html/rfc5842
    phrase = "Loop Detected";
    break;
  case 510: // 510 Not Extended - https://tools.ietf.org/html/rfc2774
    phrase = "Not Extended";
    break;
  case 511: // 511 Network Authentication Required - https://tools.ietf.org/html/rfc6585
    phrase = "Network Authentication Required";
    break;
  default:
    phrase = "";
    break;
  }
  JS::SetReservedSlot(obj, Slots::StatusMessage,
                      JS::StringValue(JS_NewStringCopyN(cx, phrase, strlen(phrase))));
}