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-
-node-fetch
-==========
-
-[![npm version][npm-image]][npm-url]
-[![build status][travis-image]][travis-url]
-[![coverage status][codecov-image]][codecov-url]
-
-A light-weight module that brings `window.fetch` to Node.js
-
-
-# Motivation
-
-Instead of implementing `XMLHttpRequest` in Node.js to run browser-specific [Fetch polyfill](https://github.com/github/fetch), why not go from native `http` to `Fetch` API directly? Hence `node-fetch`, minimal code for a `window.fetch` compatible API on Node.js runtime.
-
-See Matt Andrews' [isomorphic-fetch](https://github.com/matthew-andrews/isomorphic-fetch) for isomorphic usage (exports `node-fetch` for server-side, `whatwg-fetch` for client-side).
-
-
-# Features
-
-- Stay consistent with `window.fetch` API.
-- Make conscious trade-off when following [whatwg fetch spec](https://fetch.spec.whatwg.org/) and [stream spec](https://streams.spec.whatwg.org/) implementation details, document known difference.
-- Use native promise, but allow substituting it with [insert your favorite promise library].
-- Use native stream for body, on both request and response.
-- Decode content encoding (gzip/deflate) properly, and convert string output (such as `res.text()` and `res.json()`) to UTF-8 automatically.
-- Useful extensions such as timeout, redirect limit, response size limit, [explicit errors](https://github.com/bitinn/node-fetch/blob/master/ERROR-HANDLING.md) for troubleshooting.
-
-
-# Difference from client-side fetch
-
-- See [Known Differences](https://github.com/bitinn/node-fetch/blob/master/LIMITS.md) for details.
-- If you happen to use a missing feature that `window.fetch` offers, feel free to open an issue.
-- Pull requests are welcomed too!
-
-
-# Install
-
-`npm install node-fetch --save`
-
-
-# Usage
-
-```javascript
-var fetch = require('node-fetch');
-
-// if you are on node v0.10, set a Promise library first, eg.
-// fetch.Promise = require('bluebird');
-
-// plain text or html
-
-fetch('https://github.com/')
-	.then(function(res) {
-		return res.text();
-	}).then(function(body) {
-		console.log(body);
-	});
-
-// json
-
-fetch('https://api.github.com/users/github')
-	.then(function(res) {
-		return res.json();
-	}).then(function(json) {
-		console.log(json);
-	});
-
-// catching network error
-// 3xx-5xx responses are NOT network errors, and should be handled in then()
-// you only need one catch() at the end of your promise chain
-
-fetch('http://domain.invalid/')
-	.catch(function(err) {
-		console.log(err);
-	});
-
-// stream
-// the node.js way is to use stream when possible
-
-fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png')
-	.then(function(res) {
-		var dest = fs.createWriteStream('./octocat.png');
-		res.body.pipe(dest);
-	});
-
-// buffer
-// if you prefer to cache binary data in full, use buffer()
-// note that buffer() is a node-fetch only API
-
-var fileType = require('file-type');
-fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png')
-	.then(function(res) {
-		return res.buffer();
-	}).then(function(buffer) {
-		fileType(buffer);
-	});
-
-// meta
-
-fetch('https://github.com/')
-	.then(function(res) {
-		console.log(res.ok);
-		console.log(res.status);
-		console.log(res.statusText);
-		console.log(res.headers.raw());
-		console.log(res.headers.get('content-type'));
-	});
-
-// post
-
-fetch('http://httpbin.org/post', { method: 'POST', body: 'a=1' })
-	.then(function(res) {
-		return res.json();
-	}).then(function(json) {
-		console.log(json);
-	});
-
-// post with stream from resumer
-
-var resumer = require('resumer');
-var stream = resumer().queue('a=1').end();
-fetch('http://httpbin.org/post', { method: 'POST', body: stream })
-	.then(function(res) {
-		return res.json();
-	}).then(function(json) {
-		console.log(json);
-	});
-
-// post with form-data (detect multipart)
-
-var FormData = require('form-data');
-var form = new FormData();
-form.append('a', 1);
-fetch('http://httpbin.org/post', { method: 'POST', body: form })
-	.then(function(res) {
-		return res.json();
-	}).then(function(json) {
-		console.log(json);
-	});
-
-// post with form-data (custom headers)
-// note that getHeaders() is non-standard API
-
-var FormData = require('form-data');
-var form = new FormData();
-form.append('a', 1);
-fetch('http://httpbin.org/post', { method: 'POST', body: form, headers: form.getHeaders() })
-	.then(function(res) {
-		return res.json();
-	}).then(function(json) {
-		console.log(json);
-	});
-
-// node 0.12+, yield with co
-
-var co = require('co');
-co(function *() {
-	var res = yield fetch('https://api.github.com/users/github');
-	var json = yield res.json();
-	console.log(res);
-});
-```
-
-See [test cases](https://github.com/bitinn/node-fetch/blob/master/test/test.js) for more examples.
-
-
-# API
-
-## fetch(url, options)
-
-Returns a `Promise`
-
-### Url
-
-Should be an absolute url, eg `http://example.com/`
-
-### Options
-
-default values are shown, note that only `method`, `headers`, `redirect` and `body` are allowed in `window.fetch`, others are node.js extensions.
-
-```
-{
-	method: 'GET'
-	, headers: {}        // request header. format {a:'1'} or {b:['1','2','3']}
-	, redirect: 'follow' // set to `manual` to extract redirect headers, `error` to reject redirect
-	, follow: 20         // maximum redirect count. 0 to not follow redirect
-	, timeout: 0         // req/res timeout in ms, it resets on redirect. 0 to disable (OS limit applies)
-	, compress: true     // support gzip/deflate content encoding. false to disable
-	, size: 0            // maximum response body size in bytes. 0 to disable
-	, body: empty        // request body. can be a string, buffer, readable stream
-	, agent: null        // http.Agent instance, allows custom proxy, certificate etc.
-}
-```
-
-
-# License
-
-MIT
-
-
-# Acknowledgement
-
-Thanks to [github/fetch](https://github.com/github/fetch) for providing a solid implementation reference.
-
-
-[npm-image]: https://img.shields.io/npm/v/node-fetch.svg?style=flat-square
-[npm-url]: https://www.npmjs.com/package/node-fetch
-[travis-image]: https://img.shields.io/travis/bitinn/node-fetch.svg?style=flat-square
-[travis-url]: https://travis-ci.org/bitinn/node-fetch
-[codecov-image]: https://img.shields.io/codecov/c/github/bitinn/node-fetch.svg?style=flat-square
-[codecov-url]: https://codecov.io/gh/bitinn/node-fetch