http-status-codes

What is http-status-codes?

The http-status-codes npm package provides an easy-to-use collection of HTTP status codes and reason phrases, which are useful when writing server-side code. It helps developers to avoid hardcoding numeric status codes and instead use descriptive constants, improving code readability and maintainability.

What are http-status-codes's main functionalities?

Status Code Enumeration

Provides an enumeration of HTTP status codes, allowing developers to use descriptive constants instead of numeric codes.

const { StatusCodes } = require('http-status-codes');

console.log(StatusCodes.OK); // 200
console.log(StatusCodes.NOT_FOUND); // 404
console.log(StatusCodes.INTERNAL_SERVER_ERROR); // 500

Reason Phrase Lookup

Allows developers to get the standard reason phrase for a given HTTP status code.

const { getReasonPhrase } = require('http-status-codes');

console.log(getReasonPhrase(200)); // 'OK'
console.log(getReasonPhrase(404)); // 'Not Found'
console.log(getReasonPhrase(500)); // 'Internal Server Error'

Status Code Lookup

Enables developers to retrieve the numeric status code for a given reason phrase.

const { getStatusCode } = require('http-status-codes');

console.log(getStatusCode('OK')); // 200
console.log(getStatusCode('Not Found')); // 404
console.log(getStatusCode('Internal Server Error')); // 500

Other packages similar to http-status-codes

statuses

A utility to interact with HTTP status codes. It provides similar functionality to http-status-codes, allowing for both numeric code and text message retrieval. It also supports looking up codes based on the message.

http-codes

Another simple package that provides HTTP status codes and messages. It is similar to http-status-codes but with a smaller footprint, offering a basic mapping between codes and their default messages.

README

http-status-codes

Constants enumerating the HTTP status codes. Based on the Java Apache HttpStatus API.

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.

TypeScript or JavaScript. Completely library agnostic. No dependencies.

Installation

npm install http-status-codes --save

Usage (express 4.x)

import {
	ReasonPhrases,
	StatusCodes,
	getReasonPhrase,
	getStatusCode,
} from 'http-status-codes';

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
100	CONTINUE	Continue
101	SWITCHING_PROTOCOLS	Switching Protocols
102	PROCESSING	Processing
200	OK	OK
201	CREATED	Created
202	ACCEPTED	Accepted
203	NON_AUTHORITATIVE_INFORMATION	Non Authoritative Information
204	NO_CONTENT	No Content
205	RESET_CONTENT	Reset Content
206	PARTIAL_CONTENT	Partial Content
207	MULTI_STATUS	Multi-Status
300	MULTIPLE_CHOICES	Multiple Choices
301	MOVED_PERMANENTLY	Moved Permanently
302	MOVED_TEMPORARILY	Moved Temporarily
303	SEE_OTHER	See Other
304	NOT_MODIFIED	Not Modified
305	USE_PROXY	Use Proxy
307	TEMPORARY_REDIRECT	Temporary Redirect
308	PERMANENT_REDIRECT	Permanent Redirect
400	BAD_REQUEST	Bad Request
401	UNAUTHORIZED	Unauthorized
402	PAYMENT_REQUIRED	Payment Required
403	FORBIDDEN	Forbidden
404	NOT_FOUND	Not Found
405	METHOD_NOT_ALLOWED	Method Not Allowed
406	NOT_ACCEPTABLE	Not Acceptable
407	PROXY_AUTHENTICATION_REQUIRED	Proxy Authentication Required
408	REQUEST_TIMEOUT	Request Timeout
409	CONFLICT	Conflict
410	GONE	Gone
411	LENGTH_REQUIRED	Length Required
412	PRECONDITION_FAILED	Precondition Failed
413	REQUEST_TOO_LONG	Request Entity Too Large
414	REQUEST_URI_TOO_LONG	Request-URI Too Long
415	UNSUPPORTED_MEDIA_TYPE	Unsupported Media Type
416	REQUESTED_RANGE_NOT_SATISFIABLE	Requested Range Not Satisfiable
417	EXPECTATION_FAILED	Expectation Failed
418	IM_A_TEAPOT	I'm a teapot
419	INSUFFICIENT_SPACE_ON_RESOURCE	Insufficient Space on Resource
420	METHOD_FAILURE	Method Failure
422	UNPROCESSABLE_ENTITY	Unprocessable Entity
423	LOCKED	Locked
424	FAILED_DEPENDENCY	Failed Dependency
428	PRECONDITION_REQUIRED	Precondition Required
429	TOO_MANY_REQUESTS	Too Many Requests
431	REQUEST_HEADER_FIELDS_TOO_LARGE	Request Header Fields Too Large
451	UNAVAILABLE_FOR_LEGAL_REASONS	Unavailable For Legal Reasons
500	INTERNAL_SERVER_ERROR	Internal Server Error
501	NOT_IMPLEMENTED	Not Implemented
502	BAD_GATEWAY	Bad Gateway
503	SERVICE_UNAVAILABLE	Service Unavailable
504	GATEWAY_TIMEOUT	Gateway Timeout
505	HTTP_VERSION_NOT_SUPPORTED	HTTP Version Not Supported
507	INSUFFICIENT_STORAGE	Insufficient Storage
511	NETWORK_AUTHENTICATION_REQUIRED	Network Authentication Required

Migrating from v1.x.x

http-status-codes v2 is mostly backwards compatible with v1. There is a single breaking change and two recommended changes.

[Breaking Change] 'Server Error'

The reason phrase for the status code 500 has been changed from "Server Error" to "Internal Server Error". This is the correct phrase according to RFC7231. If you are migrating from v1, and have code that relies on the result of getStatusText(500) or getReasonPhrase('Server Error'), then this could affect you.

[Non-breaking change] getStatusText renamed getReasonPhrase

The function getStatusText has been renamed to getReasonPhrase. The old function is still available, but may be deprecated in a future version. To fix this simply rename instances of getStatusText() to getReasonPhrase(). The function is otherwise the same as it was before.

[Non-breaking change] StatusCodes

In http-status-codes v1, Status Codes were exported directly from the top-level module. i.e. HttpStatus.OK. In v2 all Status Codes live under an object called StatusCodes. i.e. HttpStatus.StatusCodes.OK. We made this change to cater to TypeScript users who prefer a dedicated value with an enum type. The previous values are still exported, but we won't continue to update them. Please migrate if you're using the old-style imports.

Proposing a new status code

If you'd like to propose a new status code, feel free to update "codes.json" with the necessary information and open a pull request. There is no need to modify source code or even this README. This is done automatically by npm run update-codes.

In general, we try to include only codes that have an official RFC and have been approved, however exceptions can be made if the code is already in widespread use in the wild.

Steps to build and publish

npm run update-codes
npm run test
npm run build
npm version [major | minor | patch]
npm publish