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2.4.0 / 2019-04-17
==================
* deps: bytes@3.1.0
- Add petabyte (`pb`) support
* deps: http-errors@1.7.2
- Set constructor name when possible
- deps: setprototypeof@1.1.1
- deps: statuses@'>= 1.5.0 < 2'
* deps: iconv-lite@0.4.24
- Added encoding MIK
2.3.3 / 2018-05-08
==================
* deps: http-errors@1.6.3
- deps: depd@~1.1.2
- deps: setprototypeof@1.1.0
- deps: statuses@'>= 1.3.1 < 2'
* deps: iconv-lite@0.4.23
- Fix loading encoding with year appended
- Fix deprecation warnings on Node.js 10+
2.3.2 / 2017-09-09
==================
* deps: iconv-lite@0.4.19
- Fix ISO-8859-1 regression
- Update Windows-1255
2.3.1 / 2017-09-07
==================
* deps: bytes@3.0.0
* deps: http-errors@1.6.2
- deps: depd@1.1.1
* perf: skip buffer decoding on overage chunk
2.3.0 / 2017-08-04
==================
* Add TypeScript definitions
* Use `http-errors` for standard emitted errors
* deps: bytes@2.5.0
* deps: iconv-lite@0.4.18
- Add support for React Native
- Add a warning if not loaded as utf-8
- Fix CESU-8 decoding in Node.js 8
- Improve speed of ISO-8859-1 encoding
2.2.0 / 2017-01-02
==================
* deps: iconv-lite@0.4.15
- Added encoding MS-31J
- Added encoding MS-932
- Added encoding MS-936
- Added encoding MS-949
- Added encoding MS-950
- Fix GBK/GB18030 handling of Euro character
2.1.7 / 2016-06-19
==================
* deps: bytes@2.4.0
* perf: remove double-cleanup on happy path
2.1.6 / 2016-03-07
==================
* deps: bytes@2.3.0
- Drop partial bytes on all parsed units
- Fix parsing byte string that looks like hex
2.1.5 / 2015-11-30
==================
* deps: bytes@2.2.0
* deps: iconv-lite@0.4.13
2.1.4 / 2015-09-27
==================
* Fix masking critical errors from `iconv-lite`
* deps: iconv-lite@0.4.12
- Fix CESU-8 decoding in Node.js 4.x
2.1.3 / 2015-09-12
==================
* Fix sync callback when attaching data listener causes sync read
- Node.js 0.10 compatibility issue
2.1.2 / 2015-07-05
==================
* Fix error stack traces to skip `makeError`
* deps: iconv-lite@0.4.11
- Add encoding CESU-8
2.1.1 / 2015-06-14
==================
* Use `unpipe` module for unpiping requests
2.1.0 / 2015-05-28
==================
* deps: iconv-lite@0.4.10
- Improved UTF-16 endianness detection
- Leading BOM is now removed when decoding
- The encoding UTF-16 without BOM now defaults to UTF-16LE when detection fails
2.0.2 / 2015-05-21
==================
* deps: bytes@2.1.0
- Slight optimizations
2.0.1 / 2015-05-10
==================
* Fix a false-positive when unpiping in Node.js 0.8
2.0.0 / 2015-05-08
==================
* Return a promise without callback instead of thunk
* deps: bytes@2.0.1
- units no longer case sensitive when parsing
1.3.4 / 2015-04-15
==================
* Fix hanging callback if request aborts during read
* deps: iconv-lite@0.4.8
- Add encoding alias UNICODE-1-1-UTF-7
1.3.3 / 2015-02-08
==================
* deps: iconv-lite@0.4.7
- Gracefully support enumerables on `Object.prototype`
1.3.2 / 2015-01-20
==================
* deps: iconv-lite@0.4.6
- Fix rare aliases of single-byte encodings
1.3.1 / 2014-11-21
==================
* deps: iconv-lite@0.4.5
- Fix Windows-31J and X-SJIS encoding support
1.3.0 / 2014-07-20
==================
* Fully unpipe the stream on error
- Fixes `Cannot switch to old mode now` error on Node.js 0.10+
1.2.3 / 2014-07-20
==================
* deps: iconv-lite@0.4.4
- Added encoding UTF-7
1.2.2 / 2014-06-19
==================
* Send invalid encoding error to callback
1.2.1 / 2014-06-15
==================
* deps: iconv-lite@0.4.3
- Added encodings UTF-16BE and UTF-16 with BOM
1.2.0 / 2014-06-13
==================
* Passing string as `options` interpreted as encoding
* Support all encodings from `iconv-lite`
1.1.7 / 2014-06-12
==================
* use `string_decoder` module from npm
1.1.6 / 2014-05-27
==================
* check encoding for old streams1
* support node.js < 0.10.6
1.1.5 / 2014-05-14
==================
* bump bytes
1.1.4 / 2014-04-19
==================
* allow true as an option
* bump bytes
1.1.3 / 2014-03-02
==================
* fix case when length=null
1.1.2 / 2013-12-01
==================
* be less strict on state.encoding check
1.1.1 / 2013-11-27
==================
* add engines
1.1.0 / 2013-11-27
==================
* add err.statusCode and err.type
* allow for encoding option to be true
* pause the stream instead of dumping on error
* throw if the stream's encoding is set
1.0.1 / 2013-11-19
==================
* dont support streams1, throw if dev set encoding
1.0.0 / 2013-11-17
==================
* rename `expected` option to `length`
0.2.0 / 2013-11-15
==================
* republish
0.1.1 / 2013-11-15
==================
* use bytes
0.1.0 / 2013-11-11
==================
* generator support
0.0.3 / 2013-10-10
==================
* update repo
0.0.2 / 2013-09-14
==================
* dump stream on bad headers
* listen to events after defining received and buffers
0.0.1 / 2013-09-14
==================
* Initial release

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The MIT License (MIT)
Copyright (c) 2013-2014 Jonathan Ong <me@jongleberry.com>
Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# raw-body
[![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]
Gets the entire buffer of a stream either as a `Buffer` or a string.
Validates the stream's length against an expected length and maximum limit.
Ideal for parsing request bodies.
## Install
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
```sh
$ npm install raw-body
```
### TypeScript
This module includes a [TypeScript](https://www.typescriptlang.org/)
declaration file to enable auto complete in compatible editors and type
information for TypeScript projects. This module depends on the Node.js
types, so install `@types/node`:
```sh
$ npm install @types/node
```
## API
<!-- eslint-disable no-unused-vars -->
```js
var getRawBody = require('raw-body')
```
### getRawBody(stream, [options], [callback])
**Returns a promise if no callback specified and global `Promise` exists.**
Options:
- `length` - The length of the stream.
If the contents of the stream do not add up to this length,
an `400` error code is returned.
- `limit` - The byte limit of the body.
This is the number of bytes or any string format supported by
[bytes](https://www.npmjs.com/package/bytes),
for example `1000`, `'500kb'` or `'3mb'`.
If the body ends up being larger than this limit,
a `413` error code is returned.
- `encoding` - The encoding to use to decode the body into a string.
By default, a `Buffer` instance will be returned when no encoding is specified.
Most likely, you want `utf-8`, so setting `encoding` to `true` will decode as `utf-8`.
You can use any type of encoding supported by [iconv-lite](https://www.npmjs.org/package/iconv-lite#readme).
You can also pass a string in place of options to just specify the encoding.
If an error occurs, the stream will be paused, everything unpiped,
and you are responsible for correctly disposing the stream.
For HTTP requests, no handling is required if you send a response.
For streams that use file descriptors, you should `stream.destroy()` or `stream.close()` to prevent leaks.
## Errors
This module creates errors depending on the error condition during reading.
The error may be an error from the underlying Node.js implementation, but is
otherwise an error created by this module, which has the following attributes:
* `limit` - the limit in bytes
* `length` and `expected` - the expected length of the stream
* `received` - the received bytes
* `encoding` - the invalid encoding
* `status` and `statusCode` - the corresponding status code for the error
* `type` - the error type
### Types
The errors from this module have a `type` property which allows for the progamatic
determination of the type of error returned.
#### encoding.unsupported
This error will occur when the `encoding` option is specified, but the value does
not map to an encoding supported by the [iconv-lite](https://www.npmjs.org/package/iconv-lite#readme)
module.
#### entity.too.large
This error will occur when the `limit` option is specified, but the stream has
an entity that is larger.
#### request.aborted
This error will occur when the request stream is aborted by the client before
reading the body has finished.
#### request.size.invalid
This error will occur when the `length` option is specified, but the stream has
emitted more bytes.
#### stream.encoding.set
This error will occur when the given stream has an encoding set on it, making it
a decoded stream. The stream should not have an encoding set and is expected to
emit `Buffer` objects.
## Examples
### Simple Express example
```js
var contentType = require('content-type')
var express = require('express')
var getRawBody = require('raw-body')
var app = express()
app.use(function (req, res, next) {
getRawBody(req, {
length: req.headers['content-length'],
limit: '1mb',
encoding: contentType.parse(req).parameters.charset
}, function (err, string) {
if (err) return next(err)
req.text = string
next()
})
})
// now access req.text
```
### Simple Koa example
```js
var contentType = require('content-type')
var getRawBody = require('raw-body')
var koa = require('koa')
var app = koa()
app.use(function * (next) {
this.text = yield getRawBody(this.req, {
length: this.req.headers['content-length'],
limit: '1mb',
encoding: contentType.parse(this.req).parameters.charset
})
yield next
})
// now access this.text
```
### Using as a promise
To use this library as a promise, simply omit the `callback` and a promise is
returned, provided that a global `Promise` is defined.
```js
var getRawBody = require('raw-body')
var http = require('http')
var server = http.createServer(function (req, res) {
getRawBody(req)
.then(function (buf) {
res.statusCode = 200
res.end(buf.length + ' bytes submitted')
})
.catch(function (err) {
res.statusCode = 500
res.end(err.message)
})
})
server.listen(3000)
```
### Using with TypeScript
```ts
import * as getRawBody from 'raw-body';
import * as http from 'http';
const server = http.createServer((req, res) => {
getRawBody(req)
.then((buf) => {
res.statusCode = 200;
res.end(buf.length + ' bytes submitted');
})
.catch((err) => {
res.statusCode = err.statusCode;
res.end(err.message);
});
});
server.listen(3000);
```
## License
[MIT](LICENSE)
[npm-image]: https://img.shields.io/npm/v/raw-body.svg
[npm-url]: https://npmjs.org/package/raw-body
[node-version-image]: https://img.shields.io/node/v/raw-body.svg
[node-version-url]: https://nodejs.org/en/download/
[travis-image]: https://img.shields.io/travis/stream-utils/raw-body/master.svg
[travis-url]: https://travis-ci.org/stream-utils/raw-body
[coveralls-image]: https://img.shields.io/coveralls/stream-utils/raw-body/master.svg
[coveralls-url]: https://coveralls.io/r/stream-utils/raw-body?branch=master
[downloads-image]: https://img.shields.io/npm/dm/raw-body.svg
[downloads-url]: https://npmjs.org/package/raw-body

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import { Readable } from 'stream';
declare namespace getRawBody {
export type Encoding = string | true;
export interface Options {
/**
* The expected length of the stream.
*/
length?: number | string | null;
/**
* The byte limit of the body. This is the number of bytes or any string
* format supported by `bytes`, for example `1000`, `'500kb'` or `'3mb'`.
*/
limit?: number | string | null;
/**
* The encoding to use to decode the body into a string. By default, a
* `Buffer` instance will be returned when no encoding is specified. Most
* likely, you want `utf-8`, so setting encoding to `true` will decode as
* `utf-8`. You can use any type of encoding supported by `iconv-lite`.
*/
encoding?: Encoding | null;
}
export interface RawBodyError extends Error {
/**
* The limit in bytes.
*/
limit?: number;
/**
* The expected length of the stream.
*/
length?: number;
expected?: number;
/**
* The received bytes.
*/
received?: number;
/**
* The encoding.
*/
encoding?: string;
/**
* The corresponding status code for the error.
*/
status: number;
statusCode: number;
/**
* The error type.
*/
type: string;
}
}
/**
* Gets the entire buffer of a stream either as a `Buffer` or a string.
* Validates the stream's length against an expected length and maximum
* limit. Ideal for parsing request bodies.
*/
declare function getRawBody(
stream: Readable,
callback: (err: getRawBody.RawBodyError, body: Buffer) => void
): void;
declare function getRawBody(
stream: Readable,
options: (getRawBody.Options & { encoding: getRawBody.Encoding }) | getRawBody.Encoding,
callback: (err: getRawBody.RawBodyError, body: string) => void
): void;
declare function getRawBody(
stream: Readable,
options: getRawBody.Options,
callback: (err: getRawBody.RawBodyError, body: Buffer) => void
): void;
declare function getRawBody(
stream: Readable,
options: (getRawBody.Options & { encoding: getRawBody.Encoding }) | getRawBody.Encoding
): Promise<string>;
declare function getRawBody(
stream: Readable,
options?: getRawBody.Options
): Promise<Buffer>;
export = getRawBody;

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/*!
* raw-body
* Copyright(c) 2013-2014 Jonathan Ong
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var bytes = require('bytes')
var createError = require('http-errors')
var iconv = require('iconv-lite')
var unpipe = require('unpipe')
/**
* Module exports.
* @public
*/
module.exports = getRawBody
/**
* Module variables.
* @private
*/
var ICONV_ENCODING_MESSAGE_REGEXP = /^Encoding not recognized: /
/**
* Get the decoder for a given encoding.
*
* @param {string} encoding
* @private
*/
function getDecoder (encoding) {
if (!encoding) return null
try {
return iconv.getDecoder(encoding)
} catch (e) {
// error getting decoder
if (!ICONV_ENCODING_MESSAGE_REGEXP.test(e.message)) throw e
// the encoding was not found
throw createError(415, 'specified encoding unsupported', {
encoding: encoding,
type: 'encoding.unsupported'
})
}
}
/**
* Get the raw body of a stream (typically HTTP).
*
* @param {object} stream
* @param {object|string|function} [options]
* @param {function} [callback]
* @public
*/
function getRawBody (stream, options, callback) {
var done = callback
var opts = options || {}
if (options === true || typeof options === 'string') {
// short cut for encoding
opts = {
encoding: options
}
}
if (typeof options === 'function') {
done = options
opts = {}
}
// validate callback is a function, if provided
if (done !== undefined && typeof done !== 'function') {
throw new TypeError('argument callback must be a function')
}
// require the callback without promises
if (!done && !global.Promise) {
throw new TypeError('argument callback is required')
}
// get encoding
var encoding = opts.encoding !== true
? opts.encoding
: 'utf-8'
// convert the limit to an integer
var limit = bytes.parse(opts.limit)
// convert the expected length to an integer
var length = opts.length != null && !isNaN(opts.length)
? parseInt(opts.length, 10)
: null
if (done) {
// classic callback style
return readStream(stream, encoding, length, limit, done)
}
return new Promise(function executor (resolve, reject) {
readStream(stream, encoding, length, limit, function onRead (err, buf) {
if (err) return reject(err)
resolve(buf)
})
})
}
/**
* Halt a stream.
*
* @param {Object} stream
* @private
*/
function halt (stream) {
// unpipe everything from the stream
unpipe(stream)
// pause stream
if (typeof stream.pause === 'function') {
stream.pause()
}
}
/**
* Read the data from the stream.
*
* @param {object} stream
* @param {string} encoding
* @param {number} length
* @param {number} limit
* @param {function} callback
* @public
*/
function readStream (stream, encoding, length, limit, callback) {
var complete = false
var sync = true
// check the length and limit options.
// note: we intentionally leave the stream paused,
// so users should handle the stream themselves.
if (limit !== null && length !== null && length > limit) {
return done(createError(413, 'request entity too large', {
expected: length,
length: length,
limit: limit,
type: 'entity.too.large'
}))
}
// streams1: assert request encoding is buffer.
// streams2+: assert the stream encoding is buffer.
// stream._decoder: streams1
// state.encoding: streams2
// state.decoder: streams2, specifically < 0.10.6
var state = stream._readableState
if (stream._decoder || (state && (state.encoding || state.decoder))) {
// developer error
return done(createError(500, 'stream encoding should not be set', {
type: 'stream.encoding.set'
}))
}
var received = 0
var decoder
try {
decoder = getDecoder(encoding)
} catch (err) {
return done(err)
}
var buffer = decoder
? ''
: []
// attach listeners
stream.on('aborted', onAborted)
stream.on('close', cleanup)
stream.on('data', onData)
stream.on('end', onEnd)
stream.on('error', onEnd)
// mark sync section complete
sync = false
function done () {
var args = new Array(arguments.length)
// copy arguments
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i]
}
// mark complete
complete = true
if (sync) {
process.nextTick(invokeCallback)
} else {
invokeCallback()
}
function invokeCallback () {
cleanup()
if (args[0]) {
// halt the stream on error
halt(stream)
}
callback.apply(null, args)
}
}
function onAborted () {
if (complete) return
done(createError(400, 'request aborted', {
code: 'ECONNABORTED',
expected: length,
length: length,
received: received,
type: 'request.aborted'
}))
}
function onData (chunk) {
if (complete) return
received += chunk.length
if (limit !== null && received > limit) {
done(createError(413, 'request entity too large', {
limit: limit,
received: received,
type: 'entity.too.large'
}))
} else if (decoder) {
buffer += decoder.write(chunk)
} else {
buffer.push(chunk)
}
}
function onEnd (err) {
if (complete) return
if (err) return done(err)
if (length !== null && received !== length) {
done(createError(400, 'request size did not match content length', {
expected: length,
length: length,
received: received,
type: 'request.size.invalid'
}))
} else {
var string = decoder
? buffer + (decoder.end() || '')
: Buffer.concat(buffer)
done(null, string)
}
}
function cleanup () {
buffer = null
stream.removeListener('aborted', onAborted)
stream.removeListener('data', onData)
stream.removeListener('end', onEnd)
stream.removeListener('error', onEnd)
stream.removeListener('close', cleanup)
}
}

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{
"_args": [
[
"raw-body@2.4.0",
"D:\\Documents\\UniWork\\Year 4\\Semester 2\\SEG3125\\Labs\\Lab 6\\Survey_Analysis"
]
],
"_from": "raw-body@2.4.0",
"_id": "raw-body@2.4.0",
"_inBundle": false,
"_integrity": "sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==",
"_location": "/raw-body",
"_phantomChildren": {},
"_requested": {
"type": "version",
"registry": true,
"raw": "raw-body@2.4.0",
"name": "raw-body",
"escapedName": "raw-body",
"rawSpec": "2.4.0",
"saveSpec": null,
"fetchSpec": "2.4.0"
},
"_requiredBy": [
"/body-parser"
],
"_resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.0.tgz",
"_spec": "2.4.0",
"_where": "D:\\Documents\\UniWork\\Year 4\\Semester 2\\SEG3125\\Labs\\Lab 6\\Survey_Analysis",
"author": {
"name": "Jonathan Ong",
"email": "me@jongleberry.com",
"url": "http://jongleberry.com"
},
"bugs": {
"url": "https://github.com/stream-utils/raw-body/issues"
},
"contributors": [
{
"name": "Douglas Christopher Wilson",
"email": "doug@somethingdoug.com"
},
{
"name": "Raynos",
"email": "raynos2@gmail.com"
}
],
"dependencies": {
"bytes": "3.1.0",
"http-errors": "1.7.2",
"iconv-lite": "0.4.24",
"unpipe": "1.0.0"
},
"description": "Get and validate the raw body of a readable stream.",
"devDependencies": {
"bluebird": "3.5.4",
"eslint": "5.16.0",
"eslint-config-standard": "12.0.0",
"eslint-plugin-import": "2.16.0",
"eslint-plugin-markdown": "1.0.0",
"eslint-plugin-node": "8.0.1",
"eslint-plugin-promise": "4.1.1",
"eslint-plugin-standard": "4.0.0",
"istanbul": "0.4.5",
"mocha": "6.1.3",
"readable-stream": "2.3.6",
"safe-buffer": "5.1.2"
},
"engines": {
"node": ">= 0.8"
},
"files": [
"HISTORY.md",
"LICENSE",
"README.md",
"index.d.ts",
"index.js"
],
"homepage": "https://github.com/stream-utils/raw-body#readme",
"license": "MIT",
"name": "raw-body",
"repository": {
"type": "git",
"url": "git+https://github.com/stream-utils/raw-body.git"
},
"scripts": {
"lint": "eslint --plugin markdown --ext js,md .",
"test": "mocha --trace-deprecation --reporter spec --bail --check-leaks test/",
"test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --trace-deprecation --reporter dot --check-leaks test/",
"test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --trace-deprecation --reporter spec --check-leaks test/"
},
"version": "2.4.0"
}