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136 lines
4.7 KiB
Markdown
136 lines
4.7 KiB
Markdown
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# http-errors
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[![NPM Version][npm-image]][npm-url]
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[![NPM Downloads][downloads-image]][downloads-url]
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[![Node.js Version][node-version-image]][node-version-url]
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[![Build Status][travis-image]][travis-url]
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[![Test Coverage][coveralls-image]][coveralls-url]
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Create HTTP errors for Express, Koa, Connect, etc. with ease.
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## Install
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This is a [Node.js](https://nodejs.org/en/) module available through the
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[npm registry](https://www.npmjs.com/). Installation is done using the
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[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
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```bash
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$ npm install http-errors
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```
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## Example
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```js
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var createError = require('http-errors')
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var express = require('express')
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var app = express()
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app.use(function (req, res, next) {
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if (!req.user) return next(createError(401, 'Please login to view this page.'))
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next()
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})
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```
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## API
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This is the current API, currently extracted from Koa and subject to change.
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All errors inherit from JavaScript `Error` and the exported `createError.HttpError`.
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### Error Properties
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- `expose` - can be used to signal if `message` should be sent to the client,
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defaulting to `false` when `status` >= 500
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- `headers` - can be an object of header names to values to be sent to the
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client, defaulting to `undefined`. When defined, the key names should all
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be lower-cased
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- `message` - the traditional error message, which should be kept short and all
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single line
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- `status` - the status code of the error, mirroring `statusCode` for general
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compatibility
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- `statusCode` - the status code of the error, defaulting to `500`
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### createError([status], [message], [properties])
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<!-- eslint-disable no-undef, no-unused-vars -->
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```js
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var err = createError(404, 'This video does not exist!')
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```
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- `status: 500` - the status code as a number
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- `message` - the message of the error, defaulting to node's text for that status code.
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- `properties` - custom properties to attach to the object
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### new createError\[code || name\](\[msg]\))
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<!-- eslint-disable no-undef, no-unused-vars -->
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```js
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var err = new createError.NotFound()
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```
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- `code` - the status code as a number
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- `name` - the name of the error as a "bumpy case", i.e. `NotFound` or `InternalServerError`.
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#### List of all constructors
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|Status Code|Constructor Name |
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|-----------|-----------------------------|
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|400 |BadRequest |
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|401 |Unauthorized |
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|402 |PaymentRequired |
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|403 |Forbidden |
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|404 |NotFound |
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|405 |MethodNotAllowed |
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|406 |NotAcceptable |
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|407 |ProxyAuthenticationRequired |
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|408 |RequestTimeout |
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|409 |Conflict |
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|410 |Gone |
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|411 |LengthRequired |
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|412 |PreconditionFailed |
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|413 |PayloadTooLarge |
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|414 |URITooLong |
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|415 |UnsupportedMediaType |
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|416 |RangeNotSatisfiable |
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|417 |ExpectationFailed |
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|418 |ImATeapot |
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|421 |MisdirectedRequest |
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|422 |UnprocessableEntity |
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|423 |Locked |
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|424 |FailedDependency |
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|425 |UnorderedCollection |
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|426 |UpgradeRequired |
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|428 |PreconditionRequired |
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|429 |TooManyRequests |
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|431 |RequestHeaderFieldsTooLarge |
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|451 |UnavailableForLegalReasons |
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|500 |InternalServerError |
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|501 |NotImplemented |
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|502 |BadGateway |
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|503 |ServiceUnavailable |
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|504 |GatewayTimeout |
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|505 |HTTPVersionNotSupported |
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|506 |VariantAlsoNegotiates |
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|507 |InsufficientStorage |
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|508 |LoopDetected |
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|509 |BandwidthLimitExceeded |
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|510 |NotExtended |
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|511 |NetworkAuthenticationRequired|
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## License
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[MIT](LICENSE)
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[npm-image]: https://img.shields.io/npm/v/http-errors.svg
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[npm-url]: https://npmjs.org/package/http-errors
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[node-version-image]: https://img.shields.io/node/v/http-errors.svg
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[node-version-url]: https://nodejs.org/en/download/
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[travis-image]: https://img.shields.io/travis/jshttp/http-errors.svg
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[travis-url]: https://travis-ci.org/jshttp/http-errors
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[coveralls-image]: https://img.shields.io/coveralls/jshttp/http-errors.svg
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[coveralls-url]: https://coveralls.io/r/jshttp/http-errors
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[downloads-image]: https://img.shields.io/npm/dm/http-errors.svg
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[downloads-url]: https://npmjs.org/package/http-errors
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