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+# Statuses
+
+[![NPM Version][npm-image]][npm-url]
+[![NPM Downloads][downloads-image]][downloads-url]
+[![Node.js Version][node-version-image]][node-version-url]
+[![Build Status][travis-image]][travis-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+HTTP status utility for node.
+
+## API
+
+```js
+var status = require('statuses')
+```
+
+### var code = status(Integer || String)
+
+If `Integer` or `String` is a valid HTTP code or status message, then the appropriate `code` will be returned. Otherwise, an error will be thrown.
+
+```js
+status(403) // => 403
+status('403') // => 403
+status('forbidden') // => 403
+status('Forbidden') // => 403
+status(306) // throws, as it's not supported by node.js
+```
+
+### status.codes
+
+Returns an array of all the status codes as `Integer`s.
+
+### var msg = status[code]
+
+Map of `code` to `status message`. `undefined` for invalid `code`s.
+
+```js
+status[404] // => 'Not Found'
+```
+
+### var code = status[msg]
+
+Map of `status message` to `code`. `msg` can either be title-cased or lower-cased. `undefined` for invalid `status message`s.
+
+```js
+status['not found'] // => 404
+status['Not Found'] // => 404
+```
+
+### status.redirect[code]
+
+Returns `true` if a status code is a valid redirect status.
+
+```js
+status.redirect[200] // => undefined
+status.redirect[301] // => true
+```
+
+### status.empty[code]
+
+Returns `true` if a status code expects an empty body.
+
+```js
+status.empty[200] // => undefined
+status.empty[204] // => true
+status.empty[304] // => true
+```
+
+### status.retry[code]
+
+Returns `true` if you should retry the rest.
+
+```js
+status.retry[501] // => undefined
+status.retry[503] // => true
+```
+
+### statuses/codes.json
+
+```js
+var codes = require('statuses/codes.json')
+```
+
+This is a JSON file of the status codes
+taken from `require('http').STATUS_CODES`.
+This is saved so that codes are consistent even in older node.js versions.
+For example, `308` will be added in v0.12.
+
+## Adding Status Codes
+
+The status codes are primarily sourced from http://www.iana.org/assignments/http-status-codes/http-status-codes-1.csv.
+Additionally, custom codes are added from http://en.wikipedia.org/wiki/List_of_HTTP_status_codes.
+These are added manually in the `lib/*.json` files.
+If you would like to add a status code, add it to the appropriate JSON file.
+
+To rebuild `codes.json`, run the following:
+
+```bash
+# update src/iana.json
+npm run fetch
+# build codes.json
+npm run build
+```
+
+[npm-image]: https://img.shields.io/npm/v/statuses.svg
+[npm-url]: https://npmjs.org/package/statuses
+[node-version-image]: https://img.shields.io/badge/node.js-%3E%3D_0.6-brightgreen.svg
+[node-version-url]: https://nodejs.org/en/download
+[travis-image]: https://img.shields.io/travis/jshttp/statuses.svg
+[travis-url]: https://travis-ci.org/jshttp/statuses
+[coveralls-image]: https://img.shields.io/coveralls/jshttp/statuses.svg
+[coveralls-url]: https://coveralls.io/r/jshttp/statuses?branch=master
+[downloads-image]: https://img.shields.io/npm/dm/statuses.svg
+[downloads-url]: https://npmjs.org/package/statuses