http-code-util

Constants enumerating the HTTP status codes.

All status codes defined in RFC1945 (HTTP/1.0), RFC2616 (HTTP/1.1), RFC2518 (WebDAV), RFC6585 (Additional HTTP Status Codes), and RFC7538 (Permanent Redirect) are supported.

Installation

npm install http-code-util --save

Usage (express 4.x)

import {
  ReasonPhrases,
  StatusCodes,
  getReasonPhrase,
  getStatusCode,
} from 'http-code-util';

response.status(StatusCodes.OK).send(ReasonPhrases.OK);

response.status(StatusCodes.INTERNAL_SERVER_ERROR).send({
  error: getReasonPhrase(StatusCodes.INTERNAL_SERVER_ERROR),
});

response.status(getStatusCode('Internal Server Error')).send({
  error: 'Internal Server Error',
});

Codes

Code	Constant	Reason Phrase	Explenation
100	CONTINUE	Continue	The server has received the request headers, and the client should proceed to send the request body.
101	SWITCHING_PROTOCOLS	Switching Protocols	The requester has asked the server to switch protocols, and the server has agreed to do so.
102	PROCESSING	Processing	(WebDAV) The server has received and is processing the request, but no response is available yet.
103	EARLY_HINTS	Early Hints	Used to return some response headers before final HTTP message.
200	OK	OK	The request has succeeded.
201	CREATED	Created	The request has been fulfilled, resulting in the creation of a new resource.
202	ACCEPTED	Accepted	The request has been accepted for processing, but the processing has not been completed.
203	NON_AUTHORITATIVE_INFORMATION	Non-Authoritative Information	The request was successful but the enclosed payload has been modified from that of the origin server's 200 (OK) response.
204	NO_CONTENT	No Content	The server successfully processed the request, and is not returning any content.
205	RESET_CONTENT	Reset Content	The server successfully processed the request, asks that the requester reset its document view, and is not returning any content.
206	PARTIAL_CONTENT	Partial Content	The server is delivering only part of the resource (byte serving) due to a range header sent by the client.
207	MULTI_STATUS	Multi-Status	(WebDAV) The message body that follows is by default an XML message and can contain a number of separate response codes, depending on how many sub-requests were made.
208	ALREADY_REPORTED	Already Reported	(WebDAV) The members of a DAV binding have already been enumerated in a previous reply to this request, and are not being included again.
226	IM_USED	IM Used	The server has fulfilled a request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.
300	MULTIPLE_CHOICES	Multiple Choices	The request has more than one possible response. The user-agent or user should choose one of them.
301	MOVED_PERMANENTLY	Moved Permanently	The URL of the requested resource has been changed permanently. The new URL is given in the response.
302	FOUND	Found	The URL of the requested resource has been changed temporarily. The new URL is given in the response.
303	SEE_OTHER	See Other	The response to the request can be found under another URL using a GET method.
304	NOT_MODIFIED	Not Modified	Indicates that the resource has not been modified since the version specified by the request headers.
305	USE_PROXY	Use Proxy	The requested resource is only available through a proxy, the address for which is provided in the response.
306	SWITCH_PROXY	Switch Proxy	No longer used. Originally meant "Subsequent requests should use the specified proxy."
307	TEMPORARY_REDIRECT	Temporary Redirect	The URL of the requested resource has been changed temporarily. The new URL is given in the response. The request method should not be changed when reissuing the original request.
308	PERMANENT_REDIRECT	Permanent Redirect	The URL of the requested resource has been changed permanently. The new URL is given in the response. The request method should not be changed when reissuing the original request.
400	BAD_REQUEST	Bad Request	The server could not understand the request due to invalid syntax.
401	UNAUTHORIZED	Unauthorized	The client must authenticate itself to get the requested response.
402	PAYMENT_REQUIRED	Payment Required	This response code is reserved for future use.
403	FORBIDDEN	Forbidden	The client does not have access rights to the content.
404	NOT_FOUND	Not Found	The server can not find the requested resource.
405	METHOD_NOT_ALLOWED	Method Not Allowed	The request method is known by the server but has been disabled and cannot be used.
406	NOT_ACCEPTABLE	Not Acceptable	The server cannot produce a response matching the list of acceptable values defined in the request's proactive content negotiation headers.
407	PROXY_AUTHENTICATION_REQUIRED	Proxy Authentication Required	The client must first authenticate itself with the proxy.
408	REQUEST_TIMEOUT	Request Timeout	The server would like to shut down this unused connection.
409	CONFLICT	Conflict	The request could not be completed due to a conflict with the current state of the target resource.
410	GONE	Gone	The content has been permanently deleted from server, with no forwarding address.
411	LENGTH_REQUIRED	Length Required	The server refuses to accept the request without a defined Content-Length header.
412	PRECONDITION_FAILED	Precondition Failed	The client has indicated preconditions in its headers which the server does not meet.
413	PAYLOAD_TOO_LARGE	Payload Too Large	Request entity is larger than limits defined by server.
414	URI_TOO_LONG	URI Too Long	The URI requested by the client is longer than the server is willing to interpret.
415	UNSUPPORTED_MEDIA_TYPE	Unsupported Media Type	The media format of the requested data is not supported by the server.
416	RANGE_NOT_SATISFIABLE	Range Not Satisfiable	The range specified by the Range header field in the request can't be fulfilled.
417	EXPECTATION_FAILED	Expectation Failed	The expectation indicated by the Expect request header field can't be met by the server.
418	IM_A_TEAPOT	I'm a teapot	Any attempt to brew coffee with a teapot should result in the error code "418 I'm a teapot".
421	MISDIRECTED_REQUEST	Misdirected Request	The request was directed at a server that is not able to produce a response.
422	UNPROCESSABLE_ENTITY	Unprocessable Entity	(WebDAV) The request was well-formed but was unable to be followed due to semantic errors.
423	LOCKED	Locked	(WebDAV) The resource that is being accessed is locked.
424	FAILED_DEPENDENCY	Failed Dependency	(WebDAV) The request failed due to failure of a previous request.
425	TOO_EARLY	Too Early	Indicates that the server is unwilling to risk processing a request that might be replayed.
426	UPGRADE_REQUIRED	Upgrade Required	The client should switch to a different protocol such as TLS/1.0.
428	PRECONDITION_REQUIRED	Precondition Required	The origin server requires the request to be conditional.
429	TOO_MANY_REQUESTS	Too Many Requests	The user has sent too many requests in a given amount of time ("rate limiting").
431	REQUEST_HEADER_FIELDS_TOO_LARGE	Request Header Fields Too Large	The server is unwilling to process the request because its header fields are too large.
444	CONNECTION_CLOSED_WITHOUT_RESPONSE	Connection Closed Without Response	The server closed the connection without sending any response to the client.
449	RETRY_WITH	Retry With	The server cannot honour the request because the user has not provided the required information.
450	BLOCKED_BY_WINDOWS_PARENTAL_CONTROLS	Blocked by Windows Parental Controls	The request was blocked by Windows Parental Controls.
451	UNAVAILABLE_FOR_LEGAL_REASONS	Unavailable For Legal Reasons	The user requests an illegal resource, such as a web page censored by a government.
499	CLIENT_CLOSED_REQUEST	Client Closed Request	The client has closed the request before the server could send a response.
500	INTERNAL_SERVER_ERROR	Internal Server Error	The server has encountered a situation it doesn't know how to handle.
501	NOT_IMPLEMENTED	Not Implemented	The request method is not supported by the server and cannot be handled.
502	BAD_GATEWAY	Bad Gateway	The server, while acting as a gateway or proxy, received an invalid response from the upstream server.
503	SERVICE_UNAVAILABLE	Service Unavailable	The server is not ready to handle the request.
504	GATEWAY_TIMEOUT	Gateway Timeout	The server, while acting as a gateway or proxy, did not get a response in time from the upstream server.
505	HTTP_VERSION_NOT_SUPPORTED	HTTP Version Not Supported	The HTTP version used in the request is not supported by the server.
506	VARIANT_ALSO_NEGOTIATES	Variant Also Negotiates	The server has an internal configuration error: the chosen variant resource is configured to engage in transparent content negotiation itself, and is therefore not a proper end point in the negotiation process.
507	INSUFFICIENT_STORAGE	Insufficient Storage	(WebDAV) The server is unable to store the representation needed to complete the request.
508	LOOP_DETECTED	Loop Detected	(WebDAV) The server detected an infinite loop while processing the request.
510	NOT_EXTENDED	Not Extended	Further extensions to the request are required for the server to fulfill it.
511	NETWORK_AUTHENTICATION_REQUIRED	Network Authentication Required	The client needs to authenticate to gain network access.
599	NETWORK_CONNECT_TIMEOUT_ERROR	Network Connect Timeout Error	The network connection has timed out.

Additional Usage Examples

All constants can also be accessed directly

import { HTTP_200_CODE, HTTP_200_NAME } from 'http-code-util';

response.status(HTTP_200_CODE).send(HTTP_200_NAME);

Helper Functions

Function	Description	Affects bundle size
getStatusCode(phrase)	Returns the corresponding HTTP status code, or undefined if not found.	🟡
getReasonphrase(code)	Returns the corresponding HTTP status phrase, or undefined if not found.	🟡
getDescription(code)	Returns the corresponding HTTP status description, or undefined if not found.	🔴
getStatusInfo(code)	Returns an object o the corresponding HTTP status code, phrase and description, or undefined if not found.	🔴
isSuccess(code)	Returns true if the HTTP code is a success code (between 200 and 299).	🟢
isRedirect(code)	Returns true if the HTTP code is a redirect code (between 300 and 399).	🟢
isInformational(code)	Returns true if the HTTP code is an informational code (between 100 and 199).	🟢
isClientError(code)	Returns true if the HTTP code is a client error code (between 400 and 499).	🟢
isServerError(code)	Returns true if the HTTP code is a server error code (between 500 and 599).	🟢
isOk(code)	Returns true if the HTTP code is 200 (OK).	🟢
isError(code)	Returns true if the HTTP code is a client or server error code.	🟢
hasContent(code)	Returns true if the HTTP code has content (not 204, 205, 304, or an error).	🟢
isInformationalOrSuccess(code)	Returns true if the HTTP code is informational or a success code.	🟢
isValid(code)	Returns true if the HTTP code is a known HTTP code code.	🟡

Treeshaking and bundlesize legend

Color	Treeshaking impact	Impact on bundle size
🟢	No or only specific code constants will get bundled.	almost none
🟡	All status codes and status phrases get bundled.	small
🔴	All status codes, status phrases and status descriptions get bundled.	big

Usage Examples

import {
  isSuccess,
  isRedirect,
  isInformational,
  isClientError,
  isServerError,
  isOk,
  isError,
  hasContent,
  isInformationalOrSuccess,
  isValid,
} from 'http-code-util';

console.log(isSuccess(200)); // true
console.log(isRedirect(302)); // true
console.log(isInformational(100)); // true
console.log(isClientError(404)); // true
console.log(isServerError(500)); // true
console.log(isOk(200)); // true
console.log(isError(404)); // true
console.log(hasContent(200)); // true
console.log(isInformationalOrSuccess(200)); // true
console.log(isValid(200)); // true

License

This project is licensed under the MIT License - see the LICENSE file for details.