update packages

6 files changed, 0 insertions, 1976 deletions

diff --git a/node_modules/node-fetch/lib/body.js b/node_modules/node-fetch/lib/body.js
deleted file mode 100644
index 19bc003fe..000000000
--- a/node_modules/node-fetch/lib/body.js
+++ /dev/null
@@ -1,261 +0,0 @@
-
-/**
- * body.js
- *
- * Body interface provides common methods for Request and Response
- */
-
-var convert = require('encoding').convert;
-var bodyStream = require('is-stream');
-var PassThrough = require('stream').PassThrough;
-var FetchError = require('./fetch-error');
-
-module.exports = Body;
-
-/**
- * Body class
- *
- * @param   Stream  body  Readable stream
- * @param   Object  opts  Response options
- * @return  Void
- */
-function Body(body, opts) {
-
-	opts = opts || {};
-
-	this.body = body;
-	this.bodyUsed = false;
-	this.size = opts.size || 0;
-	this.timeout = opts.timeout || 0;
-	this._raw = [];
-	this._abort = false;
-
-}
-
-/**
- * Decode response as json
- *
- * @return  Promise
- */
-Body.prototype.json = function() {
-
-	var self = this;
-
-	return this._decode().then(function(buffer) {
-		try {
-			return JSON.parse(buffer.toString());
-		} catch (err) {
-			return Body.Promise.reject(new FetchError('invalid json response body at ' + self.url + ' reason: ' + err.message, 'invalid-json'));
-		}
-	});
-
-};
-
-/**
- * Decode response as text
- *
- * @return  Promise
- */
-Body.prototype.text = function() {
-
-	return this._decode().then(function(buffer) {
-		return buffer.toString();
-	});
-
-};
-
-/**
- * Decode response as buffer (non-spec api)
- *
- * @return  Promise
- */
-Body.prototype.buffer = function() {
-
-	return this._decode();
-
-};
-
-/**
- * Decode buffers into utf-8 string
- *
- * @return  Promise
- */
-Body.prototype._decode = function() {
-
-	var self = this;
-
-	if (this.bodyUsed) {
-		return Body.Promise.reject(new Error('body used already for: ' + this.url));
-	}
-
-	this.bodyUsed = true;
-	this._bytes = 0;
-	this._abort = false;
-	this._raw = [];
-
-	return new Body.Promise(function(resolve, reject) {
-		var resTimeout;
-
-		// body is string
-		if (typeof self.body === 'string') {
-			self._bytes = self.body.length;
-			self._raw = [new Buffer(self.body)];
-			return resolve(self._convert());
-		}
-
-		// body is buffer
-		if (self.body instanceof Buffer) {
-			self._bytes = self.body.length;
-			self._raw = [self.body];
-			return resolve(self._convert());
-		}
-
-		// allow timeout on slow response body
-		if (self.timeout) {
-			resTimeout = setTimeout(function() {
-				self._abort = true;
-				reject(new FetchError('response timeout at ' + self.url + ' over limit: ' + self.timeout, 'body-timeout'));
-			}, self.timeout);
-		}
-
-		// handle stream error, such as incorrect content-encoding
-		self.body.on('error', function(err) {
-			reject(new FetchError('invalid response body at: ' + self.url + ' reason: ' + err.message, 'system', err));
-		});
-
-		// body is stream
-		self.body.on('data', function(chunk) {
-			if (self._abort || chunk === null) {
-				return;
-			}
-
-			if (self.size && self._bytes + chunk.length > self.size) {
-				self._abort = true;
-				reject(new FetchError('content size at ' + self.url + ' over limit: ' + self.size, 'max-size'));
-				return;
-			}
-
-			self._bytes += chunk.length;
-			self._raw.push(chunk);
-		});
-
-		self.body.on('end', function() {
-			if (self._abort) {
-				return;
-			}
-
-			clearTimeout(resTimeout);
-			resolve(self._convert());
-		});
-	});
-
-};
-
-/**
- * Detect buffer encoding and convert to target encoding
- * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding
- *
- * @param   String  encoding  Target encoding
- * @return  String
- */
-Body.prototype._convert = function(encoding) {
-
-	encoding = encoding || 'utf-8';
-
-	var ct = this.headers.get('content-type');
-	var charset = 'utf-8';
-	var res, str;
-
-	// header
-	if (ct) {
-		// skip encoding detection altogether if not html/xml/plain text
-		if (!/text\/html|text\/plain|\+xml|\/xml/i.test(ct)) {
-			return Buffer.concat(this._raw);
-		}
-
-		res = /charset=([^;]*)/i.exec(ct);
-	}
-
-	// no charset in content type, peek at response body for at most 1024 bytes
-	if (!res && this._raw.length > 0) {
-		for (var i = 0; i < this._raw.length; i++) {
-			str += this._raw[i].toString()
-			if (str.length > 1024) {
-				break;
-			}
-		}
-		str = str.substr(0, 1024);
-	}
-
-	// html5
-	if (!res && str) {
-		res = /<meta.+?charset=(['"])(.+?)\1/i.exec(str);
-	}
-
-	// html4
-	if (!res && str) {
-		res = /<meta[\s]+?http-equiv=(['"])content-type\1[\s]+?content=(['"])(.+?)\2/i.exec(str);
-
-		if (res) {
-			res = /charset=(.*)/i.exec(res.pop());
-		}
-	}
-
-	// xml
-	if (!res && str) {
-		res = /<\?xml.+?encoding=(['"])(.+?)\1/i.exec(str);
-	}
-
-	// found charset
-	if (res) {
-		charset = res.pop();
-
-		// prevent decode issues when sites use incorrect encoding
-		// ref: https://hsivonen.fi/encoding-menu/
-		if (charset === 'gb2312' || charset === 'gbk') {
-			charset = 'gb18030';
-		}
-	}
-
-	// turn raw buffers into a single utf-8 buffer
-	return convert(
-		Buffer.concat(this._raw)
-		, encoding
-		, charset
-	);
-
-};
-
-/**
- * Clone body given Res/Req instance
- *
- * @param   Mixed  instance  Response or Request instance
- * @return  Mixed
- */
-Body.prototype._clone = function(instance) {
-	var p1, p2;
-	var body = instance.body;
-
-	// don't allow cloning a used body
-	if (instance.bodyUsed) {
-		throw new Error('cannot clone body after it is used');
-	}
-
-	// check that body is a stream and not form-data object
-	// note: we can't clone the form-data object without having it as a dependency
-	if (bodyStream(body) && typeof body.getBoundary !== 'function') {
-		// tee instance body
-		p1 = new PassThrough();
-		p2 = new PassThrough();
-		body.pipe(p1);
-		body.pipe(p2);
-		// set instance body to teed body and return the other teed body
-		instance.body = p1;
-		body = p2;
-	}
-
-	return body;
-}
-
-// expose Promise
-Body.Promise = global.Promise;
diff --git a/node_modules/node-fetch/lib/fetch-error.js b/node_modules/node-fetch/lib/fetch-error.js
deleted file mode 100644
index a48eb828c..000000000
--- a/node_modules/node-fetch/lib/fetch-error.js
+++ /dev/null
@@ -1,33 +0,0 @@
-
-/**
- * fetch-error.js
- *
- * FetchError interface for operational errors
- */
-
-module.exports = FetchError;
-
-/**
- * Create FetchError instance
- *
- * @param   String      message      Error message for human
- * @param   String      type         Error type for machine
- * @param   String      systemError  For Node.js system error
- * @return  FetchError
- */
-function FetchError(message, type, systemError) {
-
-	this.name = this.constructor.name;
-	this.message = message;
-	this.type = type;
-
-	// when err.type is `system`, err.code contains system error code
-	if (systemError) {
-		this.code = this.errno = systemError.code;
-	}
-
-	// hide custom error implementation details from end-users
-	Error.captureStackTrace(this, this.constructor);
-}
-
-require('util').inherits(FetchError, Error);
diff --git a/node_modules/node-fetch/lib/headers.js b/node_modules/node-fetch/lib/headers.js
deleted file mode 100644
index af20749b8..000000000
--- a/node_modules/node-fetch/lib/headers.js
+++ /dev/null
@@ -1,141 +0,0 @@
-
-/**
- * headers.js
- *
- * Headers class offers convenient helpers
- */
-
-module.exports = Headers;
-
-/**
- * Headers class
- *
- * @param   Object  headers  Response headers
- * @return  Void
- */
-function Headers(headers) {
-
-	var self = this;
-	this._headers = {};
-
-	// Headers
-	if (headers instanceof Headers) {
-		headers = headers.raw();
-	}
-
-	// plain object
-	for (var prop in headers) {
-		if (!headers.hasOwnProperty(prop)) {
-			continue;
-		}
-
-		if (typeof headers[prop] === 'string') {
-			this.set(prop, headers[prop]);
-
-		} else if (typeof headers[prop] === 'number' && !isNaN(headers[prop])) {
-			this.set(prop, headers[prop].toString());
-
-		} else if (Array.isArray(headers[prop])) {
-			headers[prop].forEach(function(item) {
-				self.append(prop, item.toString());
-			});
-		}
-	}
-
-}
-
-/**
- * Return first header value given name
- *
- * @param   String  name  Header name
- * @return  Mixed
- */
-Headers.prototype.get = function(name) {
-	var list = this._headers[name.toLowerCase()];
-	return list ? list[0] : null;
-};
-
-/**
- * Return all header values given name
- *
- * @param   String  name  Header name
- * @return  Array
- */
-Headers.prototype.getAll = function(name) {
-	if (!this.has(name)) {
-		return [];
-	}
-
-	return this._headers[name.toLowerCase()];
-};
-
-/**
- * Iterate over all headers
- *
- * @param   Function  callback  Executed for each item with parameters (value, name, thisArg)
- * @param   Boolean   thisArg   `this` context for callback function
- * @return  Void
- */
-Headers.prototype.forEach = function(callback, thisArg) {
-	Object.getOwnPropertyNames(this._headers).forEach(function(name) {
-		this._headers[name].forEach(function(value) {
-			callback.call(thisArg, value, name, this)
-		}, this)
-	}, this)
-}
-
-/**
- * Overwrite header values given name
- *
- * @param   String  name   Header name
- * @param   String  value  Header value
- * @return  Void
- */
-Headers.prototype.set = function(name, value) {
-	this._headers[name.toLowerCase()] = [value];
-};
-
-/**
- * Append a value onto existing header
- *
- * @param   String  name   Header name
- * @param   String  value  Header value
- * @return  Void
- */
-Headers.prototype.append = function(name, value) {
-	if (!this.has(name)) {
-		this.set(name, value);
-		return;
-	}
-
-	this._headers[name.toLowerCase()].push(value);
-};
-
-/**
- * Check for header name existence
- *
- * @param   String   name  Header name
- * @return  Boolean
- */
-Headers.prototype.has = function(name) {
-	return this._headers.hasOwnProperty(name.toLowerCase());
-};
-
-/**
- * Delete all header values given name
- *
- * @param   String  name  Header name
- * @return  Void
- */
-Headers.prototype['delete'] = function(name) {
-	delete this._headers[name.toLowerCase()];
-};
-
-/**
- * Return raw headers (non-spec api)
- *
- * @return  Object
- */
-Headers.prototype.raw = function() {
-	return this._headers;
-};
diff --git a/node_modules/node-fetch/lib/index.js b/node_modules/node-fetch/lib/index.js
deleted file mode 100644
index f10085472..000000000
--- a/node_modules/node-fetch/lib/index.js
+++ /dev/null
@@ -1,1416 +0,0 @@
-'use strict';
-
-Object.defineProperty(exports, '__esModule', { value: true });
-
-// Based on https://github.com/tmpvar/jsdom/blob/aa85b2abf07766ff7bf5c1f6daafb3726f2f2db5/lib/jsdom/living/blob.js
-// (MIT licensed)
-
-const BUFFER = Symbol('buffer');
-const TYPE = Symbol('type');
-const CLOSED = Symbol('closed');
-
-class Blob {
-	constructor() {
-		Object.defineProperty(this, Symbol.toStringTag, {
-			value: 'Blob',
-			writable: false,
-			enumerable: false,
-			configurable: true
-		});
-
-		this[CLOSED] = false;
-		this[TYPE] = '';
-
-		const blobParts = arguments[0];
-		const options = arguments[1];
-
-		const buffers = [];
-
-		if (blobParts) {
-			const a = blobParts;
-			const length = Number(a.length);
-			for (let i = 0; i < length; i++) {
-				const element = a[i];
-				let buffer;
-				if (element instanceof Buffer) {
-					buffer = element;
-				} else if (ArrayBuffer.isView(element)) {
-					buffer = Buffer.from(element.buffer, element.byteOffset, element.byteLength);
-				} else if (element instanceof ArrayBuffer) {
-					buffer = Buffer.from(element);
-				} else if (element instanceof Blob) {
-					buffer = element[BUFFER];
-				} else {
-					buffer = Buffer.from(typeof element === 'string' ? element : String(element));
-				}
-				buffers.push(buffer);
-			}
-		}
-
-		this[BUFFER] = Buffer.concat(buffers);
-
-		let type = options && options.type !== undefined && String(options.type).toLowerCase();
-		if (type && !/[^\u0020-\u007E]/.test(type)) {
-			this[TYPE] = type;
-		}
-	}
-	get size() {
-		return this[CLOSED] ? 0 : this[BUFFER].length;
-	}
-	get type() {
-		return this[TYPE];
-	}
-	get isClosed() {
-		return this[CLOSED];
-	}
-	slice() {
-		const size = this.size;
-
-		const start = arguments[0];
-		const end = arguments[1];
-		let relativeStart, relativeEnd;
-		if (start === undefined) {
-			relativeStart = 0;
-		} else if (start < 0) {
-			relativeStart = Math.max(size + start, 0);
-		} else {
-			relativeStart = Math.min(start, size);
-		}
-		if (end === undefined) {
-			relativeEnd = size;
-		} else if (end < 0) {
-			relativeEnd = Math.max(size + end, 0);
-		} else {
-			relativeEnd = Math.min(end, size);
-		}
-		const span = Math.max(relativeEnd - relativeStart, 0);
-
-		const buffer = this[BUFFER];
-		const slicedBuffer = buffer.slice(relativeStart, relativeStart + span);
-		const blob = new Blob([], { type: arguments[2] });
-		blob[BUFFER] = slicedBuffer;
-		blob[CLOSED] = this[CLOSED];
-		return blob;
-	}
-	close() {
-		this[CLOSED] = true;
-	}
-}
-
-Object.defineProperty(Blob.prototype, Symbol.toStringTag, {
-	value: 'BlobPrototype',
-	writable: false,
-	enumerable: false,
-	configurable: true
-});
-
-/**
- * fetch-error.js
- *
- * FetchError interface for operational errors
- */
-
-/**
- * Create FetchError instance
- *
- * @param   String      message      Error message for human
- * @param   String      type         Error type for machine
- * @param   String      systemError  For Node.js system error
- * @return  FetchError
- */
-function FetchError(message, type, systemError) {
-  Error.call(this, message);
-
-  this.message = message;
-  this.type = type;
-
-  // when err.type is `system`, err.code contains system error code
-  if (systemError) {
-    this.code = this.errno = systemError.code;
-  }
-
-  // hide custom error implementation details from end-users
-  Error.captureStackTrace(this, this.constructor);
-}
-
-FetchError.prototype = Object.create(Error.prototype);
-FetchError.prototype.constructor = FetchError;
-FetchError.prototype.name = 'FetchError';
-
-/**
- * body.js
- *
- * Body interface provides common methods for Request and Response
- */
-
-const Stream = require('stream');
-
-var _require$1 = require('stream');
-
-const PassThrough$1 = _require$1.PassThrough;
-
-
-const DISTURBED = Symbol('disturbed');
-
-let convert;
-try {
-	convert = require('encoding').convert;
-} catch (e) {}
-
-/**
- * Body class
- *
- * Cannot use ES6 class because Body must be called with .call().
- *
- * @param   Stream  body  Readable stream
- * @param   Object  opts  Response options
- * @return  Void
- */
-function Body(body) {
-	var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
-	    _ref$size = _ref.size;
-
-	let size = _ref$size === undefined ? 0 : _ref$size;
-	var _ref$timeout = _ref.timeout;
-	let timeout = _ref$timeout === undefined ? 0 : _ref$timeout;
-
-	if (body == null) {
-		// body is undefined or null
-		body = null;
-	} else if (typeof body === 'string') {
-		// body is string
-	} else if (isURLSearchParams(body)) {
-		// body is a URLSearchParams
-	} else if (body instanceof Blob) {
-		// body is blob
-	} else if (Buffer.isBuffer(body)) {
-		// body is buffer
-	} else if (body instanceof Stream) {
-		// body is stream
-	} else {
-		// none of the above
-		// coerce to string
-		body = String(body);
-	}
-	this.body = body;
-	this[DISTURBED] = false;
-	this.size = size;
-	this.timeout = timeout;
-}
-
-Body.prototype = {
-	get bodyUsed() {
-		return this[DISTURBED];
-	},
-
-	/**
-  * Decode response as ArrayBuffer
-  *
-  * @return  Promise
-  */
-	arrayBuffer() {
-		return consumeBody.call(this).then(function (buf) {
-			return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
-		});
-	},
-
-	/**
-  * Return raw response as Blob
-  *
-  * @return Promise
-  */
-	blob() {
-		let ct = this.headers && this.headers.get('content-type') || '';
-		return consumeBody.call(this).then(function (buf) {
-			return Object.assign(
-			// Prevent copying
-			new Blob([], {
-				type: ct.toLowerCase()
-			}), {
-				[BUFFER]: buf
-			});
-		});
-	},
-
-	/**
-  * Decode response as json
-  *
-  * @return  Promise
-  */
-	json() {
-		var _this = this;
-
-		return consumeBody.call(this).then(function (buffer) {
-			try {
-				return JSON.parse(buffer.toString());
-			} catch (err) {
-				return Body.Promise.reject(new FetchError(`invalid json response body at ${_this.url} reason: ${err.message}`, 'invalid-json'));
-			}
-		});
-	},
-
-	/**
-  * Decode response as text
-  *
-  * @return  Promise
-  */
-	text() {
-		return consumeBody.call(this).then(function (buffer) {
-			return buffer.toString();
-		});
-	},
-
-	/**
-  * Decode response as buffer (non-spec api)
-  *
-  * @return  Promise
-  */
-	buffer() {
-		return consumeBody.call(this);
-	},
-
-	/**
-  * Decode response as text, while automatically detecting the encoding and
-  * trying to decode to UTF-8 (non-spec api)
-  *
-  * @return  Promise
-  */
-	textConverted() {
-		var _this2 = this;
-
-		return consumeBody.call(this).then(function (buffer) {
-			return convertBody(buffer, _this2.headers);
-		});
-	}
-
-};
-
-Body.mixIn = function (proto) {
-	for (const name of Object.getOwnPropertyNames(Body.prototype)) {
-		// istanbul ignore else: future proof
-		if (!(name in proto)) {
-			const desc = Object.getOwnPropertyDescriptor(Body.prototype, name);
-			Object.defineProperty(proto, name, desc);
-		}
-	}
-};
-
-/**
- * Decode buffers into utf-8 string
- *
- * @return  Promise
- */
-function consumeBody(body) {
-	var _this3 = this;
-
-	if (this[DISTURBED]) {
-		return Body.Promise.reject(new Error(`body used already for: ${this.url}`));
-	}
-
-	this[DISTURBED] = true;
-
-	// body is null
-	if (this.body === null) {
-		return Body.Promise.resolve(Buffer.alloc(0));
-	}
-
-	// body is string
-	if (typeof this.body === 'string') {
-		return Body.Promise.resolve(Buffer.from(this.body));
-	}
-
-	// body is blob
-	if (this.body instanceof Blob) {
-		return Body.Promise.resolve(this.body[BUFFER]);
-	}
-
-	// body is buffer
-	if (Buffer.isBuffer(this.body)) {
-		return Body.Promise.resolve(this.body);
-	}
-
-	// istanbul ignore if: should never happen
-	if (!(this.body instanceof Stream)) {
-		return Body.Promise.resolve(Buffer.alloc(0));
-	}
-
-	// body is stream
-	// get ready to actually consume the body
-	let accum = [];
-	let accumBytes = 0;
-	let abort = false;
-
-	return new Body.Promise(function (resolve, reject) {
-		let resTimeout;
-
-		// allow timeout on slow response body
-		if (_this3.timeout) {
-			resTimeout = setTimeout(function () {
-				abort = true;
-				reject(new FetchError(`Response timeout while trying to fetch ${_this3.url} (over ${_this3.timeout}ms)`, 'body-timeout'));
-			}, _this3.timeout);
-		}
-
-		// handle stream error, such as incorrect content-encoding
-		_this3.body.on('error', function (err) {
-			reject(new FetchError(`Invalid response body while trying to fetch ${_this3.url}: ${err.message}`, 'system', err));
-		});
-
-		_this3.body.on('data', function (chunk) {
-			if (abort || chunk === null) {
-				return;
-			}
-
-			if (_this3.size && accumBytes + chunk.length > _this3.size) {
-				abort = true;
-				reject(new FetchError(`content size at ${_this3.url} over limit: ${_this3.size}`, 'max-size'));
-				return;
-			}
-
-			accumBytes += chunk.length;
-			accum.push(chunk);
-		});
-
-		_this3.body.on('end', function () {
-			if (abort) {
-				return;
-			}
-
-			clearTimeout(resTimeout);
-			resolve(Buffer.concat(accum));
-		});
-	});
-}
-
-/**
- * Detect buffer encoding and convert to target encoding
- * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding
- *
- * @param   Buffer  buffer    Incoming buffer
- * @param   String  encoding  Target encoding
- * @return  String
- */
-function convertBody(buffer, headers) {
-	if (typeof convert !== 'function') {
-		throw new Error('The package `encoding` must be installed to use the textConverted() function');
-	}
-
-	const ct = headers.get('content-type');
-	let charset = 'utf-8';
-	let res, str;
-
-	// header
-	if (ct) {
-		res = /charset=([^;]*)/i.exec(ct);
-	}
-
-	// no charset in content type, peek at response body for at most 1024 bytes
-	str = buffer.slice(0, 1024).toString();
-
-	// html5
-	if (!res && str) {
-		res = /<meta.+?charset=(['"])(.+?)\1/i.exec(str);
-	}
-
-	// html4
-	if (!res && str) {
-		res = /<meta[\s]+?http-equiv=(['"])content-type\1[\s]+?content=(['"])(.+?)\2/i.exec(str);
-
-		if (res) {
-			res = /charset=(.*)/i.exec(res.pop());
-		}
-	}
-
-	// xml
-	if (!res && str) {
-		res = /<\?xml.+?encoding=(['"])(.+?)\1/i.exec(str);
-	}
-
-	// found charset
-	if (res) {
-		charset = res.pop();
-
-		// prevent decode issues when sites use incorrect encoding
-		// ref: https://hsivonen.fi/encoding-menu/
-		if (charset === 'gb2312' || charset === 'gbk') {
-			charset = 'gb18030';
-		}
-	}
-
-	// turn raw buffers into a single utf-8 buffer
-	return convert(buffer, 'UTF-8', charset).toString();
-}
-
-/**
- * Detect a URLSearchParams object
- * ref: https://github.com/bitinn/node-fetch/issues/296#issuecomment-307598143
- *
- * @param   Object  obj     Object to detect by type or brand
- * @return  String
- */
-function isURLSearchParams(obj) {
-	// Duck-typing as a necessary condition.
-	if (typeof obj !== 'object' || typeof obj.append !== 'function' || typeof obj.delete !== 'function' || typeof obj.get !== 'function' || typeof obj.getAll !== 'function' || typeof obj.has !== 'function' || typeof obj.set !== 'function') {
-		return false;
-	}
-
-	// Brand-checking and more duck-typing as optional condition.
-	return obj.constructor.name === 'URLSearchParams' || Object.prototype.toString.call(obj) === '[object URLSearchParams]' || typeof obj.sort === 'function';
-}
-
-/**
- * Clone body given Res/Req instance
- *
- * @param   Mixed  instance  Response or Request instance
- * @return  Mixed
- */
-function clone(instance) {
-	let p1, p2;
-	let body = instance.body;
-
-	// don't allow cloning a used body
-	if (instance.bodyUsed) {
-		throw new Error('cannot clone body after it is used');
-	}
-
-	// check that body is a stream and not form-data object
-	// note: we can't clone the form-data object without having it as a dependency
-	if (body instanceof Stream && typeof body.getBoundary !== 'function') {
-		// tee instance body
-		p1 = new PassThrough$1();
-		p2 = new PassThrough$1();
-		body.pipe(p1);
-		body.pipe(p2);
-		// set instance body to teed body and return the other teed body
-		instance.body = p1;
-		body = p2;
-	}
-
-	return body;
-}
-
-/**
- * Performs the operation "extract a `Content-Type` value from |object|" as
- * specified in the specification:
- * https://fetch.spec.whatwg.org/#concept-bodyinit-extract
- *
- * This function assumes that instance.body is present and non-null.
- *
- * @param   Mixed  instance  Response or Request instance
- */
-function extractContentType(instance) {
-	const body = instance.body;
-
-	// istanbul ignore if: Currently, because of a guard in Request, body
-	// can never be null. Included here for completeness.
-
-	if (body === null) {
-		// body is null
-		return null;
-	} else if (typeof body === 'string') {
-		// body is string
-		return 'text/plain;charset=UTF-8';
-	} else if (isURLSearchParams(body)) {
-		// body is a URLSearchParams
-		return 'application/x-www-form-urlencoded;charset=UTF-8';
-	} else if (body instanceof Blob) {
-		// body is blob
-		return body.type || null;
-	} else if (Buffer.isBuffer(body)) {
-		// body is buffer
-		return null;
-	} else if (typeof body.getBoundary === 'function') {
-		// detect form data input from form-data module
-		return `multipart/form-data;boundary=${body.getBoundary()}`;
-	} else {
-		// body is stream
-		// can't really do much about this
-		return null;
-	}
-}
-
-function getTotalBytes(instance) {
-	const body = instance.body;
-
-	// istanbul ignore if: included for completion
-
-	if (body === null) {
-		// body is null
-		return 0;
-	} else if (typeof body === 'string') {
-		// body is string
-		return Buffer.byteLength(body);
-	} else if (isURLSearchParams(body)) {
-		// body is URLSearchParams
-		return Buffer.byteLength(String(body));
-	} else if (body instanceof Blob) {
-		// body is blob
-		return body.size;
-	} else if (Buffer.isBuffer(body)) {
-		// body is buffer
-		return body.length;
-	} else if (body && typeof body.getLengthSync === 'function') {
-		// detect form data input from form-data module
-		if (body._lengthRetrievers && body._lengthRetrievers.length == 0 || // 1.x
-		body.hasKnownLength && body.hasKnownLength()) {
-			// 2.x
-			return body.getLengthSync();
-		}
-		return null;
-	} else {
-		// body is stream
-		// can't really do much about this
-		return null;
-	}
-}
-
-function writeToStream(dest, instance) {
-	const body = instance.body;
-
-
-	if (body === null) {
-		// body is null
-		dest.end();
-	} else if (typeof body === 'string') {
-		// body is string
-		dest.write(body);
-		dest.end();
-	} else if (isURLSearchParams(body)) {
-		// body is URLSearchParams
-		dest.write(Buffer.from(String(body)));
-		dest.end();
-	} else if (body instanceof Blob) {
-		// body is blob
-		dest.write(body[BUFFER]);
-		dest.end();
-	} else if (Buffer.isBuffer(body)) {
-		// body is buffer
-		dest.write(body);
-		dest.end();
-	} else {
-		// body is stream
-		body.pipe(dest);
-	}
-}
-
-// expose Promise
-Body.Promise = global.Promise;
-
-/**
- * A set of utilities borrowed from Node.js' _http_common.js
- */
-
-/**
- * Verifies that the given val is a valid HTTP token
- * per the rules defined in RFC 7230
- * See https://tools.ietf.org/html/rfc7230#section-3.2.6
- *
- * Allowed characters in an HTTP token:
- * ^_`a-z  94-122
- * A-Z     65-90
- * -       45
- * 0-9     48-57
- * !       33
- * #$%&'   35-39
- * *+      42-43
- * .       46
- * |       124
- * ~       126
- *
- * This implementation of checkIsHttpToken() loops over the string instead of
- * using a regular expression since the former is up to 180% faster with v8 4.9
- * depending on the string length (the shorter the string, the larger the
- * performance difference)
- *
- * Additionally, checkIsHttpToken() is currently designed to be inlinable by v8,
- * so take care when making changes to the implementation so that the source
- * code size does not exceed v8's default max_inlined_source_size setting.
- **/
-/* istanbul ignore next */
-function isValidTokenChar(ch) {
-  if (ch >= 94 && ch <= 122) return true;
-  if (ch >= 65 && ch <= 90) return true;
-  if (ch === 45) return true;
-  if (ch >= 48 && ch <= 57) return true;
-  if (ch === 34 || ch === 40 || ch === 41 || ch === 44) return false;
-  if (ch >= 33 && ch <= 46) return true;
-  if (ch === 124 || ch === 126) return true;
-  return false;
-}
-/* istanbul ignore next */
-function checkIsHttpToken(val) {
-  if (typeof val !== 'string' || val.length === 0) return false;
-  if (!isValidTokenChar(val.charCodeAt(0))) return false;
-  const len = val.length;
-  if (len > 1) {
-    if (!isValidTokenChar(val.charCodeAt(1))) return false;
-    if (len > 2) {
-      if (!isValidTokenChar(val.charCodeAt(2))) return false;
-      if (len > 3) {
-        if (!isValidTokenChar(val.charCodeAt(3))) return false;
-        for (var i = 4; i < len; i++) {
-          if (!isValidTokenChar(val.charCodeAt(i))) return false;
-        }
-      }
-    }
-  }
-  return true;
-}
-/**
- * True if val contains an invalid field-vchar
- *  field-value    = *( field-content / obs-fold )
- *  field-content  = field-vchar [ 1*( SP / HTAB ) field-vchar ]
- *  field-vchar    = VCHAR / obs-text
- *
- * checkInvalidHeaderChar() is currently designed to be inlinable by v8,
- * so take care when making changes to the implementation so that the source
- * code size does not exceed v8's default max_inlined_source_size setting.
- **/
-/* istanbul ignore next */
-function checkInvalidHeaderChar(val) {
-  val += '';
-  if (val.length < 1) return false;
-  var c = val.charCodeAt(0);
-  if (c <= 31 && c !== 9 || c > 255 || c === 127) return true;
-  if (val.length < 2) return false;
-  c = val.charCodeAt(1);
-  if (c <= 31 && c !== 9 || c > 255 || c === 127) return true;
-  if (val.length < 3) return false;
-  c = val.charCodeAt(2);
-  if (c <= 31 && c !== 9 || c > 255 || c === 127) return true;
-  for (var i = 3; i < val.length; ++i) {
-    c = val.charCodeAt(i);
-    if (c <= 31 && c !== 9 || c > 255 || c === 127) return true;
-  }
-  return false;
-}
-
-/**
- * headers.js
- *
- * Headers class offers convenient helpers
- */
-
-function sanitizeName(name) {
-	name += '';
-	if (!checkIsHttpToken(name)) {
-		throw new TypeError(`${name} is not a legal HTTP header name`);
-	}
-	return name.toLowerCase();
-}
-
-function sanitizeValue(value) {
-	value += '';
-	if (checkInvalidHeaderChar(value)) {
-		throw new TypeError(`${value} is not a legal HTTP header value`);
-	}
-	return value;
-}
-
-const MAP = Symbol('map');
-class Headers {
-	/**
-  * Headers class
-  *
-  * @param   Object  headers  Response headers
-  * @return  Void
-  */
-	constructor() {
-		let init = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;
-
-		this[MAP] = Object.create(null);
-
-		if (init instanceof Headers) {
-			const rawHeaders = init.raw();
-			const headerNames = Object.keys(rawHeaders);
-
-			for (const headerName of headerNames) {
-				for (const value of rawHeaders[headerName]) {
-					this.append(headerName, value);
-				}
-			}
-
-			return;
-		}
-
-		// We don't worry about converting prop to ByteString here as append()
-		// will handle it.
-		if (init == null) {
-			// no op
-		} else if (typeof init === 'object') {
-			const method = init[Symbol.iterator];
-			if (method != null) {
-				if (typeof method !== 'function') {
-					throw new TypeError('Header pairs must be iterable');
-				}
-
-				// sequence<sequence<ByteString>>
-				// Note: per spec we have to first exhaust the lists then process them
-				const pairs = [];
-				for (const pair of init) {
-					if (typeof pair !== 'object' || typeof pair[Symbol.iterator] !== 'function') {
-						throw new TypeError('Each header pair must be iterable');
-					}
-					pairs.push(Array.from(pair));
-				}
-
-				for (const pair of pairs) {
-					if (pair.length !== 2) {
-						throw new TypeError('Each header pair must be a name/value tuple');
-					}
-					this.append(pair[0], pair[1]);
-				}
-			} else {
-				// record<ByteString, ByteString>
-				for (const key of Object.keys(init)) {
-					const value = init[key];
-					this.append(key, value);
-				}
-			}
-		} else {
-			throw new TypeError('Provided initializer must be an object');
-		}
-
-		Object.defineProperty(this, Symbol.toStringTag, {
-			value: 'Headers',
-			writable: false,
-			enumerable: false,
-			configurable: true
-		});
-	}
-
-	/**
-  * Return first header value given name
-  *
-  * @param   String  name  Header name
-  * @return  Mixed
-  */
-	get(name) {
-		const list = this[MAP][sanitizeName(name)];
-		if (!list) {
-			return null;
-		}
-
-		return list.join(', ');
-	}
-
-	/**
-  * Iterate over all headers
-  *
-  * @param   Function  callback  Executed for each item with parameters (value, name, thisArg)
-  * @param   Boolean   thisArg   `this` context for callback function
-  * @return  Void
-  */
-	forEach(callback) {
-		let thisArg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;
-
-		let pairs = getHeaderPairs(this);
-		let i = 0;
-		while (i < pairs.length) {
-			var _pairs$i = pairs[i];
-			const name = _pairs$i[0],
-			      value = _pairs$i[1];
-
-			callback.call(thisArg, value, name, this);
-			pairs = getHeaderPairs(this);
-			i++;
-		}
-	}
-
-	/**
-  * Overwrite header values given name
-  *
-  * @param   String  name   Header name
-  * @param   String  value  Header value
-  * @return  Void
-  */
-	set(name, value) {
-		this[MAP][sanitizeName(name)] = [sanitizeValue(value)];
-	}
-
-	/**
-  * Append a value onto existing header
-  *
-  * @param   String  name   Header name
-  * @param   String  value  Header value
-  * @return  Void
-  */
-	append(name, value) {
-		if (!this.has(name)) {
-			this.set(name, value);
-			return;
-		}
-
-		this[MAP][sanitizeName(name)].push(sanitizeValue(value));
-	}
-
-	/**
-  * Check for header name existence
-  *
-  * @param   String   name  Header name
-  * @return  Boolean
-  */
-	has(name) {
-		return !!this[MAP][sanitizeName(name)];
-	}
-
-	/**
-  * Delete all header values given name
-  *
-  * @param   String  name  Header name
-  * @return  Void
-  */
-	delete(name) {
-		delete this[MAP][sanitizeName(name)];
-	}
-
-	/**
-  * Return raw headers (non-spec api)
-  *
-  * @return  Object
-  */
-	raw() {
-		return this[MAP];
-	}
-
-	/**
-  * Get an iterator on keys.
-  *
-  * @return  Iterator
-  */
-	keys() {
-		return createHeadersIterator(this, 'key');
-	}
-
-	/**
-  * Get an iterator on values.
-  *
-  * @return  Iterator
-  */
-	values() {
-		return createHeadersIterator(this, 'value');
-	}
-
-	/**
-  * Get an iterator on entries.
-  *
-  * This is the default iterator of the Headers object.
-  *
-  * @return  Iterator
-  */
-	[Symbol.iterator]() {
-		return createHeadersIterator(this, 'key+value');
-	}
-}
-Headers.prototype.entries = Headers.prototype[Symbol.iterator];
-
-Object.defineProperty(Headers.prototype, Symbol.toStringTag, {
-	value: 'HeadersPrototype',
-	writable: false,
-	enumerable: false,
-	configurable: true
-});
-
-function getHeaderPairs(headers, kind) {
-	const keys = Object.keys(headers[MAP]).sort();
-	return keys.map(kind === 'key' ? function (k) {
-		return [k];
-	} : function (k) {
-		return [k, headers.get(k)];
-	});
-}
-
-const INTERNAL = Symbol('internal');
-
-function createHeadersIterator(target, kind) {
-	const iterator = Object.create(HeadersIteratorPrototype);
-	iterator[INTERNAL] = {
-		target,
-		kind,
-		index: 0
-	};
-	return iterator;
-}
-
-const HeadersIteratorPrototype = Object.setPrototypeOf({
-	next() {
-		// istanbul ignore if
-		if (!this || Object.getPrototypeOf(this) !== HeadersIteratorPrototype) {
-			throw new TypeError('Value of `this` is not a HeadersIterator');
-		}
-
-		var _INTERNAL = this[INTERNAL];
-		const target = _INTERNAL.target,
-		      kind = _INTERNAL.kind,
-		      index = _INTERNAL.index;
-
-		const values = getHeaderPairs(target, kind);
-		const len = values.length;
-		if (index >= len) {
-			return {
-				value: undefined,
-				done: true
-			};
-		}
-
-		const pair = values[index];
-		this[INTERNAL].index = index + 1;
-
-		let result;
-		if (kind === 'key') {
-			result = pair[0];
-		} else if (kind === 'value') {
-			result = pair[1];
-		} else {
-			result = pair;
-		}
-
-		return {
-			value: result,
-			done: false
-		};
-	}
-}, Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]())));
-
-Object.defineProperty(HeadersIteratorPrototype, Symbol.toStringTag, {
-	value: 'HeadersIterator',
-	writable: false,
-	enumerable: false,
-	configurable: true
-});
-
-/**
- * response.js
- *
- * Response class provides content decoding
- */
-
-var _require$2 = require('http');
-
-const STATUS_CODES = _require$2.STATUS_CODES;
-
-/**
- * Response class
- *
- * @param   Stream  body  Readable stream
- * @param   Object  opts  Response options
- * @return  Void
- */
-
-class Response {
-	constructor() {
-		let body = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
-		let opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
-
-		Body.call(this, body, opts);
-
-		this.url = opts.url;
-		this.status = opts.status || 200;
-		this.statusText = opts.statusText || STATUS_CODES[this.status];
-
-		this.headers = new Headers(opts.headers);
-
-		Object.defineProperty(this, Symbol.toStringTag, {
-			value: 'Response',
-			writable: false,
-			enumerable: false,
-			configurable: true
-		});
-	}
-
-	/**
-  * Convenience property representing if the request ended normally
-  */
-	get ok() {
-		return this.status >= 200 && this.status < 300;
-	}
-
-	/**
-  * Clone this response
-  *
-  * @return  Response
-  */
-	clone() {
-
-		return new Response(clone(this), {
-			url: this.url,
-			status: this.status,
-			statusText: this.statusText,
-			headers: this.headers,
-			ok: this.ok
-		});
-	}
-}
-
-Body.mixIn(Response.prototype);
-
-Object.defineProperty(Response.prototype, Symbol.toStringTag, {
-	value: 'ResponsePrototype',
-	writable: false,
-	enumerable: false,
-	configurable: true
-});
-
-/**
- * request.js
- *
- * Request class contains server only options
- */
-
-var _require$3 = require('url');
-
-const format_url = _require$3.format;
-const parse_url = _require$3.parse;
-
-
-const PARSED_URL = Symbol('url');
-
-/**
- * Request class
- *
- * @param   Mixed   input  Url or Request instance
- * @param   Object  init   Custom options
- * @return  Void
- */
-class Request {
-	constructor(input) {
-		let init = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
-
-		let parsedURL;
-
-		// normalize input
-		if (!(input instanceof Request)) {
-			if (input && input.href) {
-				// in order to support Node.js' Url objects; though WHATWG's URL objects
-				// will fall into this branch also (since their `toString()` will return
-				// `href` property anyway)
-				parsedURL = parse_url(input.href);
-			} else {
-				// coerce input to a string before attempting to parse
-				parsedURL = parse_url(`${input}`);
-			}
-			input = {};
-		} else {
-			parsedURL = parse_url(input.url);
-		}
-
-		let method = init.method || input.method || 'GET';
-
-		if ((init.body != null || input instanceof Request && input.body !== null) && (method === 'GET' || method === 'HEAD')) {
-			throw new TypeError('Request with GET/HEAD method cannot have body');
-		}
-
-		let inputBody = init.body != null ? init.body : input instanceof Request && input.body !== null ? clone(input) : null;
-
-		Body.call(this, inputBody, {
-			timeout: init.timeout || input.timeout || 0,
-			size: init.size || input.size || 0
-		});
-
-		// fetch spec options
-		this.method = method.toUpperCase();
-		this.redirect = init.redirect || input.redirect || 'follow';
-		this.headers = new Headers(init.headers || input.headers || {});
-
-		if (init.body != null) {
-			const contentType = extractContentType(this);
-			if (contentType !== null && !this.headers.has('Content-Type')) {
-				this.headers.append('Content-Type', contentType);
-			}
-		}
-
-		// server only options
-		this.follow = init.follow !== undefined ? init.follow : input.follow !== undefined ? input.follow : 20;
-		this.compress = init.compress !== undefined ? init.compress : input.compress !== undefined ? input.compress : true;
-		this.counter = init.counter || input.counter || 0;
-		this.agent = init.agent || input.agent;
-
-		this[PARSED_URL] = parsedURL;
-		Object.defineProperty(this, Symbol.toStringTag, {
-			value: 'Request',
-			writable: false,
-			enumerable: false,
-			configurable: true
-		});
-	}
-
-	get url() {
-		return format_url(this[PARSED_URL]);
-	}
-
-	/**
-  * Clone this request
-  *
-  * @return  Request
-  */
-	clone() {
-		return new Request(this);
-	}
-}
-
-Body.mixIn(Request.prototype);
-
-Object.defineProperty(Request.prototype, Symbol.toStringTag, {
-	value: 'RequestPrototype',
-	writable: false,
-	enumerable: false,
-	configurable: true
-});
-
-function getNodeRequestOptions(request) {
-	const parsedURL = request[PARSED_URL];
-	const headers = new Headers(request.headers);
-
-	// fetch step 3
-	if (!headers.has('Accept')) {
-		headers.set('Accept', '*/*');
-	}
-
-	// Basic fetch
-	if (!parsedURL.protocol || !parsedURL.hostname) {
-		throw new TypeError('Only absolute URLs are supported');
-	}
-
-	if (!/^https?:$/.test(parsedURL.protocol)) {
-		throw new TypeError('Only HTTP(S) protocols are supported');
-	}
-
-	// HTTP-network-or-cache fetch steps 5-9
-	let contentLengthValue = null;
-	if (request.body == null && /^(POST|PUT)$/i.test(request.method)) {
-		contentLengthValue = '0';
-	}
-	if (request.body != null) {
-		const totalBytes = getTotalBytes(request);
-		if (typeof totalBytes === 'number') {
-			contentLengthValue = String(totalBytes);
-		}
-	}
-	if (contentLengthValue) {
-		headers.set('Content-Length', contentLengthValue);
-	}
-
-	// HTTP-network-or-cache fetch step 12
-	if (!headers.has('User-Agent')) {
-		headers.set('User-Agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)');
-	}
-
-	// HTTP-network-or-cache fetch step 16
-	if (request.compress) {
-		headers.set('Accept-Encoding', 'gzip,deflate');
-	}
-	if (!headers.has('Connection') && !request.agent) {
-		headers.set('Connection', 'close');
-	}
-
-	// HTTP-network fetch step 4
-	// chunked encoding is handled by Node.js
-
-	return Object.assign({}, parsedURL, {
-		method: request.method,
-		headers: headers.raw(),
-		agent: request.agent
-	});
-}
-
-/**
- * index.js
- *
- * a request API compatible with window.fetch
- */
-
-const http = require('http');
-const https = require('https');
-
-var _require = require('stream');
-
-const PassThrough = _require.PassThrough;
-
-var _require2 = require('url');
-
-const resolve_url = _require2.resolve;
-
-const zlib = require('zlib');
-
-/**
- * Fetch function
- *
- * @param   Mixed    url   Absolute url or Request instance
- * @param   Object   opts  Fetch options
- * @return  Promise
- */
-function fetch(url, opts) {
-
-	// allow custom promise
-	if (!fetch.Promise) {
-		throw new Error('native promise missing, set fetch.Promise to your favorite alternative');
-	}
-
-	Body.Promise = fetch.Promise;
-
-	// wrap http.request into fetch
-	return new fetch.Promise(function (resolve, reject) {
-		// build request object
-		const request = new Request(url, opts);
-		const options = getNodeRequestOptions(request);
-
-		const send = (options.protocol === 'https:' ? https : http).request;
-
-		// http.request only support string as host header, this hack make custom host header possible
-		if (options.headers.host) {
-			options.headers.host = options.headers.host[0];
-		}
-
-		// send request
-		const req = send(options);
-		let reqTimeout;
-
-		if (request.timeout) {
-			req.once('socket', function (socket) {
-				reqTimeout = setTimeout(function () {
-					req.abort();
-					reject(new FetchError(`network timeout at: ${request.url}`, 'request-timeout'));
-				}, request.timeout);
-			});
-		}
-
-		req.on('error', function (err) {
-			clearTimeout(reqTimeout);
-			reject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err));
-		});
-
-		req.on('response', function (res) {
-			clearTimeout(reqTimeout);
-
-			// handle redirect
-			if (fetch.isRedirect(res.statusCode) && request.redirect !== 'manual') {
-				if (request.redirect === 'error') {
-					reject(new FetchError(`redirect mode is set to error: ${request.url}`, 'no-redirect'));
-					return;
-				}
-
-				if (request.counter >= request.follow) {
-					reject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect'));
-					return;
-				}
-
-				if (!res.headers.location) {
-					reject(new FetchError(`redirect location header missing at: ${request.url}`, 'invalid-redirect'));
-					return;
-				}
-
-				// per fetch spec, for POST request with 301/302 response, or any request with 303 response, use GET when following redirect
-				if (res.statusCode === 303 || (res.statusCode === 301 || res.statusCode === 302) && request.method === 'POST') {
-					request.method = 'GET';
-					request.body = null;
-					request.headers.delete('content-length');
-				}
-
-				request.counter++;
-
-				resolve(fetch(resolve_url(request.url, res.headers.location), request));
-				return;
-			}
-
-			// normalize location header for manual redirect mode
-			const headers = new Headers();
-			for (const name of Object.keys(res.headers)) {
-				if (Array.isArray(res.headers[name])) {
-					for (const val of res.headers[name]) {
-						headers.append(name, val);
-					}
-				} else {
-					headers.append(name, res.headers[name]);
-				}
-			}
-			if (request.redirect === 'manual' && headers.has('location')) {
-				headers.set('location', resolve_url(request.url, headers.get('location')));
-			}
-
-			// prepare response
-			let body = res.pipe(new PassThrough());
-			const response_options = {
-				url: request.url,
-				status: res.statusCode,
-				statusText: res.statusMessage,
-				headers: headers,
-				size: request.size,
-				timeout: request.timeout
-			};
-
-			// HTTP-network fetch step 16.1.2
-			const codings = headers.get('Content-Encoding');
-
-			// HTTP-network fetch step 16.1.3: handle content codings
-
-			// in following scenarios we ignore compression support
-			// 1. compression support is disabled
-			// 2. HEAD request
-			// 3. no Content-Encoding header
-			// 4. no content response (204)
-			// 5. content not modified response (304)
-			if (!request.compress || request.method === 'HEAD' || codings === null || res.statusCode === 204 || res.statusCode === 304) {
-				resolve(new Response(body, response_options));
-				return;
-			}
-
-			// For Node v6+
-			// Be less strict when decoding compressed responses, since sometimes
-			// servers send slightly invalid responses that are still accepted
-			// by common browsers.
-			// Always using Z_SYNC_FLUSH is what cURL does.
-			const zlibOptions = {
-				flush: zlib.Z_SYNC_FLUSH,
-				finishFlush: zlib.Z_SYNC_FLUSH
-			};
-
-			// for gzip
-			if (codings == 'gzip' || codings == 'x-gzip') {
-				body = body.pipe(zlib.createGunzip(zlibOptions));
-				resolve(new Response(body, response_options));
-				return;
-			}
-
-			// for deflate
-			if (codings == 'deflate' || codings == 'x-deflate') {
-				// handle the infamous raw deflate response from old servers
-				// a hack for old IIS and Apache servers
-				const raw = res.pipe(new PassThrough());
-				raw.once('data', function (chunk) {
-					// see http://stackoverflow.com/questions/37519828
-					if ((chunk[0] & 0x0F) === 0x08) {
-						body = body.pipe(zlib.createInflate());
-					} else {
-						body = body.pipe(zlib.createInflateRaw());
-					}
-					resolve(new Response(body, response_options));
-				});
-				return;
-			}
-
-			// otherwise, use response as-is
-			resolve(new Response(body, response_options));
-		});
-
-		writeToStream(req, request);
-	});
-}
-
-/**
- * Redirect code matching
- *
- * @param   Number   code  Status code
- * @return  Boolean
- */
-fetch.isRedirect = function (code) {
-	return code === 301 || code === 302 || code === 303 || code === 307 || code === 308;
-};
-
-// expose Promise
-fetch.Promise = global.Promise;
-
-module.exports = exports = fetch;
-exports.Headers = Headers;
-exports.Request = Request;
-exports.Response = Response;
-exports.FetchError = FetchError;
diff --git a/node_modules/node-fetch/lib/request.js b/node_modules/node-fetch/lib/request.js
deleted file mode 100644
index 1a29c29c6..000000000
--- a/node_modules/node-fetch/lib/request.js
+++ /dev/null
@@ -1,75 +0,0 @@
-
-/**
- * request.js
- *
- * Request class contains server only options
- */
-
-var parse_url = require('url').parse;
-var Headers = require('./headers');
-var Body = require('./body');
-
-module.exports = Request;
-
-/**
- * Request class
- *
- * @param   Mixed   input  Url or Request instance
- * @param   Object  init   Custom options
- * @return  Void
- */
-function Request(input, init) {
-	var url, url_parsed;
-
-	// normalize input
-	if (!(input instanceof Request)) {
-		url = input;
-		url_parsed = parse_url(url);
-		input = {};
-	} else {
-		url = input.url;
-		url_parsed = parse_url(url);
-	}
-
-	// normalize init
-	init = init || {};
-
-	// fetch spec options
-	this.method = init.method || input.method || 'GET';
-	this.redirect = init.redirect || input.redirect || 'follow';
-	this.headers = new Headers(init.headers || input.headers || {});
-	this.url = url;
-
-	// server only options
-	this.follow = init.follow !== undefined ?
-		init.follow : input.follow !== undefined ?
-		input.follow : 20;
-	this.compress = init.compress !== undefined ?
-		init.compress : input.compress !== undefined ?
-		input.compress : true;
-	this.counter = init.counter || input.counter || 0;
-	this.agent = init.agent || input.agent;
-
-	Body.call(this, init.body || this._clone(input), {
-		timeout: init.timeout || input.timeout || 0,
-		size: init.size || input.size || 0
-	});
-
-	// server request options
-	this.protocol = url_parsed.protocol;
-	this.hostname = url_parsed.hostname;
-	this.port = url_parsed.port;
-	this.path = url_parsed.path;
-	this.auth = url_parsed.auth;
-}
-
-Request.prototype = Object.create(Body.prototype);
-
-/**
- * Clone this request
- *
- * @return  Request
- */
-Request.prototype.clone = function() {
-	return new Request(this);
-};
diff --git a/node_modules/node-fetch/lib/response.js b/node_modules/node-fetch/lib/response.js
deleted file mode 100644
index f96aa85e8..000000000
--- a/node_modules/node-fetch/lib/response.js
+++ /dev/null
@@ -1,50 +0,0 @@
-
-/**
- * response.js
- *
- * Response class provides content decoding
- */
-
-var http = require('http');
-var Headers = require('./headers');
-var Body = require('./body');
-
-module.exports = Response;
-
-/**
- * Response class
- *
- * @param   Stream  body  Readable stream
- * @param   Object  opts  Response options
- * @return  Void
- */
-function Response(body, opts) {
-
-	opts = opts || {};
-
-	this.url = opts.url;
-	this.status = opts.status || 200;
-	this.statusText = opts.statusText || http.STATUS_CODES[this.status];
-	this.headers = new Headers(opts.headers);
-	this.ok = this.status >= 200 && this.status < 300;
-
-	Body.call(this, body, opts);
-
-}
-
-Response.prototype = Object.create(Body.prototype);
-
-/**
- * Clone this response
- *
- * @return  Response
- */
-Response.prototype.clone = function() {
-	return new Response(this._clone(this), {
-		url: this.url
-		, status: this.status
-		, statusText: this.statusText
-		, headers: this.headers
-		, ok: this.ok
-	});
-};