Updated

2025-07-01 20:13:38 +00:00 · 2019-10-10 16:43:04 +03:00
parent 6f6ac8a6fa
commit 50b9bed483
9432 changed files with 1988816 additions and 167 deletions
--- a/node_modules/node-fetch/.npmignore
+++ b/node_modules/node-fetch/.npmignore
@ -0,0 +1,41 @@
+# Logs
+logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directory
+# Commenting this out is preferred by some people, see
+# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git-
+node_modules
+
+# Users Environment Variables
+.lock-wscript
+
+# OS files
+.DS_Store
+
+# Coveralls token files
+.coveralls.yml
+
+## ignore some files from 2.x branch
+
+.nyc_output
+lib/index.js
+lib/index.es.js
+package-lock.json
--- a/node_modules/node-fetch/.travis.yml
+++ b/node_modules/node-fetch/.travis.yml
@ -0,0 +1,12 @@
+language: node_js
+node_js:
+  - "0.10"
+  - "0.12"
+  - "node"
+env:
+  - FORMDATA_VERSION=1.0.0
+  - FORMDATA_VERSION=2.1.0
+before_script:
+  - 'if [ "$FORMDATA_VERSION" ]; then npm install form-data@^$FORMDATA_VERSION; fi'
+before_install: if [[ `npm -v` < 3 ]]; then npm install -g npm@1.4.28; fi
+script: npm run coverage
--- a/node_modules/node-fetch/CHANGELOG.md
+++ b/node_modules/node-fetch/CHANGELOG.md
@ -0,0 +1,252 @@
+
+Changelog
+=========
+
+
+# 2.x release
+
+## v2.4.1
+
+- Fix: `Blob` import rule for node < 10, as `Readable` isn't a named export.
+
+## v2.4.0
+
+- Enhance: added `Brotli` compression support (using node's zlib).
+- Enhance: updated `Blob` implementation per spec.
+- Fix: set content type automatically for `URLSearchParams`.
+- Fix: `Headers` now reject empty header names.
+- Fix: test cases, as node 12+ no longer accepts invalid header response.
+
+## v2.3.0
+
+- Enhance: added `AbortSignal` support, with README example.
+- Enhance: handle invalid `Location` header during redirect by rejecting them explicitly with `FetchError`.
+- Fix: update `browser.js` to support react-native environment, where `self` isn't available globally.
+
+## v2.2.1
+
+- Fix: `compress` flag shouldn't overwrite existing `Accept-Encoding` header.
+- Fix: multiple `import` rules, where `PassThrough` etc. doesn't have a named export when using node <10 and `--exerimental-modules` flag.
+- Other: Better README.
+
+## v2.2.0
+
+- Enhance: Support all `ArrayBuffer` view types
+- Enhance: Support Web Workers
+- Enhance: Support Node.js' `--experimental-modules` mode; deprecate `.es.js` file
+- Fix: Add `__esModule` property to the exports object
+- Other: Better example in README for writing response to a file
+- Other: More tests for Agent
+
+## v2.1.2
+
+- Fix: allow `Body` methods to work on `ArrayBuffer`-backed `Body` objects
+- Fix: reject promise returned by `Body` methods when the accumulated `Buffer` exceeds the maximum size
+- Fix: support custom `Host` headers with any casing
+- Fix: support importing `fetch()` from TypeScript in `browser.js`
+- Fix: handle the redirect response body properly
+
+## v2.1.1
+
+Fix packaging errors in v2.1.0.
+
+## v2.1.0
+
+- Enhance: allow using ArrayBuffer as the `body` of a `fetch()` or `Request`
+- Fix: store HTTP headers of a `Headers` object internally with the given case, for compatibility with older servers that incorrectly treated header names in a case-sensitive manner
+- Fix: silently ignore invalid HTTP headers
+- Fix: handle HTTP redirect responses without a `Location` header just like non-redirect responses
+- Fix: include bodies when following a redirection when appropriate
+
+## v2.0.0
+
+This is a major release. Check [our upgrade guide](https://github.com/bitinn/node-fetch/blob/master/UPGRADE-GUIDE.md) for an overview on some key differences between v1 and v2.
+
+### General changes
+
+- Major: Node.js 0.10.x and 0.12.x support is dropped
+- Major: `require('node-fetch/lib/response')` etc. is now unsupported; use `require('node-fetch').Response` or ES6 module imports
+- Enhance: start testing on Node.js v4.x, v6.x, v8.x LTS, as well as v9.x stable
+- Enhance: use Rollup to produce a distributed bundle (less memory overhead and faster startup)
+- Enhance: make `Object.prototype.toString()` on Headers, Requests, and Responses return correct class strings
+- Other: rewrite in ES2015 using Babel
+- Other: use Codecov for code coverage tracking
+- Other: update package.json script for npm 5
+- Other: `encoding` module is now optional (alpha.7)
+- Other: expose browser.js through package.json, avoid bundling mishaps (alpha.9)
+- Other: allow TypeScript to `import` node-fetch by exposing default (alpha.9)
+
+### HTTP requests
+
+- Major: overwrite user's `Content-Length` if we can be sure our information is correct (per spec)
+- Fix: errors in a response are caught before the body is accessed
+- Fix: support WHATWG URL objects, created by `whatwg-url` package or `require('url').URL` in Node.js 7+
+
+### Response and Request classes
+
+- Major: `response.text()` no longer attempts to detect encoding, instead always opting for UTF-8 (per spec); use `response.textConverted()` for the v1 behavior
+- Major: make `response.json()` throw error instead of returning an empty object on 204 no-content respose (per spec; reverts behavior changed in v1.6.2)
+- Major: internal methods are no longer exposed
+- Major: throw error when a `GET` or `HEAD` Request is constructed with a non-null body (per spec)
+- Enhance: add `response.arrayBuffer()` (also applies to Requests)
+- Enhance: add experimental `response.blob()` (also applies to Requests)
+- Enhance: `URLSearchParams` is now accepted as a body
+- Enhance: wrap `response.json()` json parsing error as `FetchError`
+- Fix: fix Request and Response with `null` body
+
+### Headers class
+
+- Major: remove `headers.getAll()`; make `get()` return all headers delimited by commas (per spec)
+- Enhance: make Headers iterable
+- Enhance: make Headers constructor accept an array of tuples
+- Enhance: make sure header names and values are valid in HTTP
+- Fix: coerce Headers prototype function parameters to strings, where applicable
+
+### Documentation
+
+- Enhance: more comprehensive API docs
+- Enhance: add a list of default headers in README
+
+
+# 1.x release
+
+## backport releases (v1.7.0 and beyond)
+
+See [changelog on 1.x branch](https://github.com/bitinn/node-fetch/blob/1.x/CHANGELOG.md) for details.
+
+## v1.6.3
+
+- Enhance: error handling document to explain `FetchError` design
+- Fix: support `form-data` 2.x releases (requires `form-data` >= 2.1.0)
+
+## v1.6.2
+
+- Enhance: minor document update
+- Fix: response.json() returns empty object on 204 no-content response instead of throwing a syntax error
+
+## v1.6.1
+
+- Fix: if `res.body` is a non-stream non-formdata object, we will call `body.toString` and send it as a string
+- Fix: `counter` value is incorrectly set to `follow` value when wrapping Request instance
+- Fix: documentation update
+
+## v1.6.0
+
+- Enhance: added `res.buffer()` api for convenience, it returns body as a Node.js buffer
+- Enhance: better old server support by handling raw deflate response
+- Enhance: skip encoding detection for non-HTML/XML response
+- Enhance: minor document update
+- Fix: HEAD request doesn't need decompression, as body is empty
+- Fix: `req.body` now accepts a Node.js buffer
+
+## v1.5.3
+
+- Fix: handle 204 and 304 responses when body is empty but content-encoding is gzip/deflate
+- Fix: allow resolving response and cloned response in any order
+- Fix: avoid setting `content-length` when `form-data` body use streams
+- Fix: send DELETE request with content-length when body is present
+- Fix: allow any url when calling new Request, but still reject non-http(s) url in fetch
+
+## v1.5.2
+
+- Fix: allow node.js core to handle keep-alive connection pool when passing a custom agent
+
+## v1.5.1
+
+- Fix: redirect mode `manual` should work even when there is no redirection or broken redirection
+
+## v1.5.0
+
+- Enhance: rejected promise now use custom `Error` (thx to @pekeler)
+- Enhance: `FetchError` contains `err.type` and `err.code`, allows for better error handling (thx to @pekeler)
+- Enhance: basic support for redirect mode `manual` and `error`, allows for location header extraction (thx to @jimmywarting for the initial PR)
+
+## v1.4.1
+
+- Fix: wrapping Request instance with FormData body again should preserve the body as-is
+
+## v1.4.0
+
+- Enhance: Request and Response now have `clone` method (thx to @kirill-konshin for the initial PR)
+- Enhance: Request and Response now have proper string and buffer body support (thx to @kirill-konshin)
+- Enhance: Body constructor has been refactored out (thx to @kirill-konshin)
+- Enhance: Headers now has `forEach` method (thx to @tricoder42)
+- Enhance: back to 100% code coverage
+- Fix: better form-data support (thx to @item4)
+- Fix: better character encoding detection under chunked encoding (thx to @dsuket for the initial PR)
+
+## v1.3.3
+
+- Fix: make sure `Content-Length` header is set when body is string for POST/PUT/PATCH requests
+- Fix: handle body stream error, for cases such as incorrect `Content-Encoding` header
+- Fix: when following certain redirects, use `GET` on subsequent request per Fetch Spec
+- Fix: `Request` and `Response` constructors now parse headers input using `Headers`
+
+## v1.3.2
+
+- Enhance: allow auto detect of form-data input (no `FormData` spec on node.js, this is form-data specific feature)
+
+## v1.3.1
+
+- Enhance: allow custom host header to be set (server-side only feature, as it's a forbidden header on client-side)
+
+## v1.3.0
+
+- Enhance: now `fetch.Request` is exposed as well
+
+## v1.2.1
+
+- Enhance: `Headers` now normalized `Number` value to `String`, prevent common mistakes
+
+## v1.2.0
+
+- Enhance: now fetch.Headers and fetch.Response are exposed, making testing easier
+
+## v1.1.2
+
+- Fix: `Headers` should only support `String` and `Array` properties, and ignore others
+
+## v1.1.1
+
+- Enhance: now req.headers accept both plain object and `Headers` instance
+
+## v1.1.0
+
+- Enhance: timeout now also applies to response body (in case of slow response)
+- Fix: timeout is now cleared properly when fetch is done/has failed
+
+## v1.0.6
+
+- Fix: less greedy content-type charset matching
+
+## v1.0.5
+
+- Fix: when `follow = 0`, fetch should not follow redirect
+- Enhance: update tests for better coverage
+- Enhance: code formatting
+- Enhance: clean up doc
+
+## v1.0.4
+
+- Enhance: test iojs support
+- Enhance: timeout attached to socket event only fire once per redirect
+
+## v1.0.3
+
+- Fix: response size limit should reject large chunk
+- Enhance: added character encoding detection for xml, such as rss/atom feed (encoding in DTD)
+
+## v1.0.2
+
+- Fix: added res.ok per spec change
+
+## v1.0.0
+
+- Enhance: better test coverage and doc
+
+
+# 0.x release
+
+## v0.1
+
+- Major: initial public release
--- a/node_modules/node-fetch/ERROR-HANDLING.md
+++ b/node_modules/node-fetch/ERROR-HANDLING.md
@ -0,0 +1,21 @@
+
+Error handling with node-fetch
+==============================
+
+Because `window.fetch` isn't designed to transparent about the cause of request errors, we have to come up with our own solutions.
+
+The basics:
+
+- All [operational errors](https://www.joyent.com/node-js/production/design/errors) are rejected as [FetchError](https://github.com/bitinn/node-fetch/blob/master/lib/fetch-error.js), you can handle them all through promise `catch` clause.
+
+- All errors comes with `err.message` detailing the cause of errors.
+
+- All errors originated from `node-fetch` are marked with custom `err.type`.
+
+- All errors originated from Node.js core are marked with `err.type = system`, and contains addition `err.code` and `err.errno` for error handling, they are alias to error codes thrown by Node.js core.
+
+- [Programmer errors](https://www.joyent.com/node-js/production/design/errors) are either thrown as soon as possible, or rejected with default `Error` with `err.message` for ease of troubleshooting.
+
+List of error types:
+
+- Because we maintain 100% coverage, see [test.js](https://github.com/bitinn/node-fetch/blob/master/test/test.js) for a full list of custom `FetchError` types, as well as some of the common errors from Node.js
--- a/node_modules/node-fetch/LICENSE.md
+++ b/node_modules/node-fetch/LICENSE.md
@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 David Frank
+
+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.
+
--- a/node_modules/node-fetch/LIMITS.md
+++ b/node_modules/node-fetch/LIMITS.md
@ -0,0 +1,27 @@
+
+Known differences
+=================
+
+*As of 1.x release*
+
+- Topics such as Cross-Origin, Content Security Policy, Mixed Content, Service Workers are ignored, given our server-side context.
+
+- URL input must be an absolute URL, using either `http` or `https` as scheme.
+
+- On the upside, there are no forbidden headers, and `res.url` contains the final url when following redirects.
+
+- For convenience, `res.body` is a transform stream, so decoding can be handled independently.
+
+- Similarly, `req.body` can either be a string, a buffer or a readable stream.
+
+- Also, you can handle rejected fetch requests through checking `err.type` and `err.code`.
+
+- Only support `res.text()`, `res.json()`, `res.buffer()` at the moment, until there are good use-cases for blob/arrayBuffer.
+
+- There is currently no built-in caching, as server-side caching varies by use-cases.
+
+- Current implementation lacks server-side cookie store, you will need to extract `Set-Cookie` headers manually.
+
+- If you are using `res.clone()` and writing an isomorphic app, note that stream on Node.js have a smaller internal buffer size (16Kb, aka `highWaterMark`) from client-side browsers (>1Mb, not consistent across browsers).
+
+- ES6 features such as `headers.entries()` are missing at the moment, but you can use `headers.raw()` to retrieve the raw headers object.
--- a/node_modules/node-fetch/README.md
+++ b/node_modules/node-fetch/README.md
@ -0,0 +1,533 @@
+node-fetch
+==========
+
+[![npm version][npm-image]][npm-url]
+[![build status][travis-image]][travis-url]
+[![coverage status][codecov-image]][codecov-url]
+[![install size][install-size-image]][install-size-url]
+
+A light-weight module that brings `window.fetch` to Node.js
+
+(We are looking for [v2 maintainers and collaborators](https://github.com/bitinn/node-fetch/issues/567))
+
+<!-- TOC -->
+
+- [Motivation](#motivation)
+- [Features](#features)
+- [Difference from client-side fetch](#difference-from-client-side-fetch)
+- [Installation](#installation)
+- [Loading and configuring the module](#loading-and-configuring-the-module)
+- [Common Usage](#common-usage)
+    - [Plain text or HTML](#plain-text-or-html)
+    - [JSON](#json)
+    - [Simple Post](#simple-post)
+    - [Post with JSON](#post-with-json)
+    - [Post with form parameters](#post-with-form-parameters)
+    - [Handling exceptions](#handling-exceptions)
+    - [Handling client and server errors](#handling-client-and-server-errors)
+- [Advanced Usage](#advanced-usage)
+    - [Streams](#streams)
+    - [Buffer](#buffer)
+    - [Accessing Headers and other Meta data](#accessing-headers-and-other-meta-data)
+    - [Post data using a file stream](#post-data-using-a-file-stream)
+    - [Post with form-data (detect multipart)](#post-with-form-data-detect-multipart)
+    - [Request cancellation with AbortSignal](#request-cancellation-with-abortsignal)
+- [API](#api)
+    - [fetch(url[, options])](#fetchurl-options)
+    - [Options](#options)
+    - [Class: Request](#class-request)
+    - [Class: Response](#class-response)
+    - [Class: Headers](#class-headers)
+    - [Interface: Body](#interface-body)
+    - [Class: FetchError](#class-fetcherror)
+- [License](#license)
+- [Acknowledgement](#acknowledgement)
+
+<!-- /TOC -->
+
+## 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) or Leonardo Quixada's [cross-fetch](https://github.com/lquixada/cross-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][whatwg-fetch] and [stream spec](https://streams.spec.whatwg.org/) implementation details, document known differences.
+- Use native promise, but allow substituting it with [insert your favorite promise library].
+- Use native Node streams 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](ERROR-HANDLING.md) for troubleshooting.
+
+## Difference from client-side fetch
+
+- See [Known Differences](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!
+
+## Installation
+
+Current stable release (`2.x`)
+
+```sh
+$ npm install node-fetch --save
+```
+
+## Loading and configuring the module
+We suggest you load the module via `require`, pending the stabalizing of es modules in node:
+```js
+const fetch = require('node-fetch');
+```
+
+If you are using a Promise library other than native, set it through fetch.Promise:
+```js
+const Bluebird = require('bluebird');
+
+fetch.Promise = Bluebird;
+```
+
+## Common Usage
+
+NOTE: The documentation below is up-to-date with `2.x` releases, [see `1.x` readme](https://github.com/bitinn/node-fetch/blob/1.x/README.md), [changelog](https://github.com/bitinn/node-fetch/blob/1.x/CHANGELOG.md) and [2.x upgrade guide](UPGRADE-GUIDE.md) for the differences.
+
+#### Plain text or HTML
+```js
+fetch('https://github.com/')
+    .then(res => res.text())
+    .then(body => console.log(body));
+```
+
+#### JSON
+
+```js
+
+fetch('https://api.github.com/users/github')
+    .then(res => res.json())
+    .then(json => console.log(json));
+```
+
+#### Simple Post
+```js
+fetch('https://httpbin.org/post', { method: 'POST', body: 'a=1' })
+    .then(res => res.json()) // expecting a json response
+    .then(json => console.log(json));
+```
+
+#### Post with JSON
+
+```js
+const body = { a: 1 };
+
+fetch('https://httpbin.org/post', {
+        method: 'post',
+        body:    JSON.stringify(body),
+        headers: { 'Content-Type': 'application/json' },
+    })
+    .then(res => res.json())
+    .then(json => console.log(json));
+```
+
+#### Post with form parameters
+`URLSearchParams` is available in Node.js as of v7.5.0. See [official documentation](https://nodejs.org/api/url.html#url_class_urlsearchparams) for more usage methods.
+
+NOTE: The `Content-Type` header is only set automatically to `x-www-form-urlencoded` when an instance of `URLSearchParams` is given as such:
+
+```js
+const { URLSearchParams } = require('url');
+
+const params = new URLSearchParams();
+params.append('a', 1);
+
+fetch('https://httpbin.org/post', { method: 'POST', body: params })
+    .then(res => res.json())
+    .then(json => console.log(json));
+```
+
+#### Handling exceptions
+NOTE: 3xx-5xx responses are *NOT* exceptions, and should be handled in `then()`, see the next section.
+
+Adding a catch to the fetch promise chain will catch *all* exceptions, such as errors originating from node core libraries, like network errors, and operational errors which are instances of FetchError. See the [error handling document](ERROR-HANDLING.md)  for more details.
+
+```js
+fetch('https://domain.invalid/')
+    .catch(err => console.error(err));
+```
+
+#### Handling client and server errors
+It is common to create a helper function to check that the response contains no client (4xx) or server (5xx) error responses:
+
+```js
+function checkStatus(res) {
+    if (res.ok) { // res.status >= 200 && res.status < 300
+        return res;
+    } else {
+        throw MyCustomError(res.statusText);
+    }
+}
+
+fetch('https://httpbin.org/status/400')
+    .then(checkStatus)
+    .then(res => console.log('will not get here...'))
+```
+
+## Advanced Usage
+
+#### Streams
+The "Node.js way" is to use streams when possible:
+
+```js
+fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png')
+    .then(res => {
+        const dest = fs.createWriteStream('./octocat.png');
+        res.body.pipe(dest);
+    });
+```
+
+#### Buffer
+If you prefer to cache binary data in full, use buffer(). (NOTE: buffer() is a `node-fetch` only API)
+
+```js
+const fileType = require('file-type');
+
+fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png')
+    .then(res => res.buffer())
+    .then(buffer => fileType(buffer))
+    .then(type => { /* ... */ });
+```
+
+#### Accessing Headers and other Meta data
+```js
+fetch('https://github.com/')
+    .then(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 data using a file stream
+
+```js
+const { createReadStream } = require('fs');
+
+const stream = createReadStream('input.txt');
+
+fetch('https://httpbin.org/post', { method: 'POST', body: stream })
+    .then(res => res.json())
+    .then(json => console.log(json));
+```
+
+#### Post with form-data (detect multipart)
+
+```js
+const FormData = require('form-data');
+
+const form = new FormData();
+form.append('a', 1);
+
+fetch('https://httpbin.org/post', { method: 'POST', body: form })
+    .then(res => res.json())
+    .then(json => console.log(json));
+
+// OR, using custom headers
+// NOTE: getHeaders() is non-standard API
+
+const form = new FormData();
+form.append('a', 1);
+
+const options = {
+    method: 'POST',
+    body: form,
+    headers: form.getHeaders()
+}
+
+fetch('https://httpbin.org/post', options)
+    .then(res => res.json())
+    .then(json => console.log(json));
+```
+
+#### Request cancellation with AbortSignal
+
+> NOTE: You may only cancel streamed requests on Node >= v8.0.0
+
+You may cancel requests with `AbortController`. A suggested implementation is [`abort-controller`](https://www.npmjs.com/package/abort-controller).
+
+An example of timing out a request after 150ms could be achieved as follows:
+
+```js
+import AbortController from 'abort-controller';
+
+const controller = new AbortController();
+const timeout = setTimeout(
+  () => { controller.abort(); },
+  150,
+);
+
+fetch(url, { signal: controller.signal })
+  .then(res => res.json())
+  .then(
+    data => {
+      useData(data)
+    },
+    err => {
+      if (err.name === 'AbortError') {
+        // request was aborted
+      }
+    },
+  )
+  .finally(() => {
+    clearTimeout(timeout);
+  });
+```
+
+See [test cases](https://github.com/bitinn/node-fetch/blob/master/test/test.js) for more examples.
+
+
+## API
+
+### fetch(url[, options])
+
+- `url` A string representing the URL for fetching
+- `options` [Options](#fetch-options) for the HTTP(S) request
+- Returns: <code>Promise&lt;[Response](#class-response)&gt;</code>
+
+Perform an HTTP(S) fetch.
+
+`url` should be an absolute url, such as `https://example.com/`. A path-relative URL (`/file/under/root`) or protocol-relative URL (`//can-be-http-or-https.com/`) will result in a rejected promise.
+
+<a id="fetch-options"></a>
+### Options
+
+The default values are shown after each option key.
+
+```js
+{
+    // These properties are part of the Fetch Standard
+    method: 'GET',
+    headers: {},        // request headers. format is the identical to that accepted by the Headers constructor (see below)
+    body: null,         // request body. can be null, a string, a Buffer, a Blob, or a Node.js Readable stream
+    redirect: 'follow', // set to `manual` to extract redirect headers, `error` to reject redirect
+    signal: null,       // pass an instance of AbortSignal to optionally abort requests
+
+    // The following properties are node-fetch extensions
+    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). Signal is recommended instead.
+    compress: true,     // support gzip/deflate content encoding. false to disable
+    size: 0,            // maximum response body size in bytes. 0 to disable
+    agent: null         // http(s).Agent instance, allows custom proxy, certificate, dns lookup etc.
+}
+```
+
+##### Default Headers
+
+If no values are set, the following request headers will be sent automatically:
+
+Header              | Value
+------------------- | --------------------------------------------------------
+`Accept-Encoding`   | `gzip,deflate` _(when `options.compress === true`)_
+`Accept`            | `*/*`
+`Connection`        | `close` _(when no `options.agent` is present)_
+`Content-Length`    | _(automatically calculated, if possible)_
+`Transfer-Encoding` | `chunked` _(when `req.body` is a stream)_
+`User-Agent`        | `node-fetch/1.0 (+https://github.com/bitinn/node-fetch)`
+
+<a id="class-request"></a>
+### Class: Request
+
+An HTTP(S) request containing information about URL, method, headers, and the body. This class implements the [Body](#iface-body) interface.
+
+Due to the nature of Node.js, the following properties are not implemented at this moment:
+
+- `type`
+- `destination`
+- `referrer`
+- `referrerPolicy`
+- `mode`
+- `credentials`
+- `cache`
+- `integrity`
+- `keepalive`
+
+The following node-fetch extension properties are provided:
+
+- `follow`
+- `compress`
+- `counter`
+- `agent`
+
+See [options](#fetch-options) for exact meaning of these extensions.
+
+#### new Request(input[, options])
+
+<small>*(spec-compliant)*</small>
+
+- `input` A string representing a URL, or another `Request` (which will be cloned)
+- `options` [Options][#fetch-options] for the HTTP(S) request
+
+Constructs a new `Request` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Request/Request).
+
+In most cases, directly `fetch(url, options)` is simpler than creating a `Request` object.
+
+<a id="class-response"></a>
+### Class: Response
+
+An HTTP(S) response. This class implements the [Body](#iface-body) interface.
+
+The following properties are not implemented in node-fetch at this moment:
+
+- `Response.error()`
+- `Response.redirect()`
+- `type`
+- `redirected`
+- `trailer`
+
+#### new Response([body[, options]])
+
+<small>*(spec-compliant)*</small>
+
+- `body` A string or [Readable stream][node-readable]
+- `options` A [`ResponseInit`][response-init] options dictionary
+
+Constructs a new `Response` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Response/Response).
+
+Because Node.js does not implement service workers (for which this class was designed), one rarely has to construct a `Response` directly.
+
+#### response.ok
+
+<small>*(spec-compliant)*</small>
+
+Convenience property representing if the request ended normally. Will evaluate to true if the response status was greater than or equal to 200 but smaller than 300.
+
+<a id="class-headers"></a>
+### Class: Headers
+
+This class allows manipulating and iterating over a set of HTTP headers. All methods specified in the [Fetch Standard][whatwg-fetch] are implemented.
+
+#### new Headers([init])
+
+<small>*(spec-compliant)*</small>
+
+- `init` Optional argument to pre-fill the `Headers` object
+
+Construct a new `Headers` object. `init` can be either `null`, a `Headers` object, an key-value map object, or any iterable object.
+
+```js
+// Example adapted from https://fetch.spec.whatwg.org/#example-headers-class
+
+const meta = {
+  'Content-Type': 'text/xml',
+  'Breaking-Bad': '<3'
+};
+const headers = new Headers(meta);
+
+// The above is equivalent to
+const meta = [
+  [ 'Content-Type', 'text/xml' ],
+  [ 'Breaking-Bad', '<3' ]
+];
+const headers = new Headers(meta);
+
+// You can in fact use any iterable objects, like a Map or even another Headers
+const meta = new Map();
+meta.set('Content-Type', 'text/xml');
+meta.set('Breaking-Bad', '<3');
+const headers = new Headers(meta);
+const copyOfHeaders = new Headers(headers);
+```
+
+<a id="iface-body"></a>
+### Interface: Body
+
+`Body` is an abstract interface with methods that are applicable to both `Request` and `Response` classes.
+
+The following methods are not yet implemented in node-fetch at this moment:
+
+- `formData()`
+
+#### body.body
+
+<small>*(deviation from spec)*</small>
+
+* Node.js [`Readable` stream][node-readable]
+
+The data encapsulated in the `Body` object. Note that while the [Fetch Standard][whatwg-fetch] requires the property to always be a WHATWG `ReadableStream`, in node-fetch it is a Node.js [`Readable` stream][node-readable].
+
+#### body.bodyUsed
+
+<small>*(spec-compliant)*</small>
+
+* `Boolean`
+
+A boolean property for if this body has been consumed. Per spec, a consumed body cannot be used again.
+
+#### body.arrayBuffer()
+#### body.blob()
+#### body.json()
+#### body.text()
+
+<small>*(spec-compliant)*</small>
+
+* Returns: <code>Promise</code>
+
+Consume the body and return a promise that will resolve to one of these formats.
+
+#### body.buffer()
+
+<small>*(node-fetch extension)*</small>
+
+* Returns: <code>Promise&lt;Buffer&gt;</code>
+
+Consume the body and return a promise that will resolve to a Buffer.
+
+#### body.textConverted()
+
+<small>*(node-fetch extension)*</small>
+
+* Returns: <code>Promise&lt;String&gt;</code>
+
+Identical to `body.text()`, except instead of always converting to UTF-8, encoding sniffing will be performed and text converted to UTF-8, if possible.
+
+(This API requires an optional dependency on npm package [encoding](https://www.npmjs.com/package/encoding), which you need to install manually. `webpack` users may see [a warning message](https://github.com/bitinn/node-fetch/issues/412#issuecomment-379007792) due to this optional dependency.)
+
+<a id="class-fetcherror"></a>
+### Class: FetchError
+
+<small>*(node-fetch extension)*</small>
+
+An operational error in the fetching process. See [ERROR-HANDLING.md][] for more info.
+
+<a id="class-aborterror"></a>
+### Class: AbortError
+
+<small>*(node-fetch extension)*</small>
+
+An Error thrown when the request is aborted in response to an `AbortSignal`'s `abort` event. It has a `name` property of `AbortError`. See [ERROR-HANDLING.MD][] for more info.
+
+## Acknowledgement
+
+Thanks to [github/fetch](https://github.com/github/fetch) for providing a solid implementation reference.
+
+`node-fetch` v1 was maintained by [@bitinn](https://github.com/bitinn), v2 is currently maintained by [@TimothyGu](https://github.com/timothygu), v2 readme is written by [@jkantr](https://github.com/jkantr).
+
+## License
+
+MIT
+
+[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
+[install-size-image]: https://flat.badgen.net/packagephobia/install/node-fetch
+[install-size-url]: https://packagephobia.now.sh/result?p=node-fetch
+[whatwg-fetch]: https://fetch.spec.whatwg.org/
+[response-init]: https://fetch.spec.whatwg.org/#responseinit
+[node-readable]: https://nodejs.org/api/stream.html#stream_readable_streams
+[mdn-headers]: https://developer.mozilla.org/en-US/docs/Web/API/Headers
+[LIMITS.md]: https://github.com/bitinn/node-fetch/blob/master/LIMITS.md
+[ERROR-HANDLING.md]: https://github.com/bitinn/node-fetch/blob/master/ERROR-HANDLING.md
+[UPGRADE-GUIDE.md]: https://github.com/bitinn/node-fetch/blob/master/UPGRADE-GUIDE.md
--- a/node_modules/node-fetch/browser.js
+++ b/node_modules/node-fetch/browser.js
@ -0,0 +1,23 @@
+"use strict";
+
+// ref: https://github.com/tc39/proposal-global
+var getGlobal = function () {
+	// the only reliable means to get the global object is
+	// `Function('return this')()`
+	// However, this causes CSP violations in Chrome apps.
+	if (typeof self !== 'undefined') { return self; }
+	if (typeof window !== 'undefined') { return window; }
+	if (typeof global !== 'undefined') { return global; }
+	throw new Error('unable to locate global object');
+}
+
+var global = getGlobal();
+
+module.exports = exports = global.fetch;
+
+// Needed for TypeScript and Webpack.
+exports.default = global.fetch.bind(global);
+
+exports.Headers = global.Headers;
+exports.Request = global.Request;
+exports.Response = global.Response;
--- a/node_modules/node-fetch/index.js
+++ b/node_modules/node-fetch/index.js
@ -0,0 +1,271 @@
+
+/**
+ * index.js
+ *
+ * a request API compatible with window.fetch
+ */
+
+var parse_url = require('url').parse;
+var resolve_url = require('url').resolve;
+var http = require('http');
+var https = require('https');
+var zlib = require('zlib');
+var stream = require('stream');
+
+var Body = require('./lib/body');
+var Response = require('./lib/response');
+var Headers = require('./lib/headers');
+var Request = require('./lib/request');
+var FetchError = require('./lib/fetch-error');
+
+// commonjs
+module.exports = Fetch;
+// es6 default export compatibility
+module.exports.default = module.exports;
+
+/**
+ * Fetch class
+ *
+ * @param   Mixed    url   Absolute url or Request instance
+ * @param   Object   opts  Fetch options
+ * @return  Promise
+ */
+function Fetch(url, opts) {
+
+	// allow call as function
+	if (!(this instanceof Fetch))
+		return new 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;
+
+	var self = this;
+
+	// wrap http.request into fetch
+	return new Fetch.Promise(function(resolve, reject) {
+		// build request object
+		var options = new Request(url, opts);
+
+		if (!options.protocol || !options.hostname) {
+			throw new Error('only absolute urls are supported');
+		}
+
+		if (options.protocol !== 'http:' && options.protocol !== 'https:') {
+			throw new Error('only http(s) protocols are supported');
+		}
+
+		var send;
+		if (options.protocol === 'https:') {
+			send = https.request;
+		} else {
+			send = http.request;
+		}
+
+		// normalize headers
+		var headers = new Headers(options.headers);
+
+		if (options.compress) {
+			headers.set('accept-encoding', 'gzip,deflate');
+		}
+
+		if (!headers.has('user-agent')) {
+			headers.set('user-agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)');
+		}
+
+		if (!headers.has('connection') && !options.agent) {
+			headers.set('connection', 'close');
+		}
+
+		if (!headers.has('accept')) {
+			headers.set('accept', '*/*');
+		}
+
+		// detect form data input from form-data module, this hack avoid the need to pass multipart header manually
+		if (!headers.has('content-type') && options.body && typeof options.body.getBoundary === 'function') {
+			headers.set('content-type', 'multipart/form-data; boundary=' + options.body.getBoundary());
+		}
+
+		// bring node-fetch closer to browser behavior by setting content-length automatically
+		if (!headers.has('content-length') && /post|put|patch|delete/i.test(options.method)) {
+			if (typeof options.body === 'string') {
+				headers.set('content-length', Buffer.byteLength(options.body));
+			// detect form data input from form-data module, this hack avoid the need to add content-length header manually
+			} else if (options.body && typeof options.body.getLengthSync === 'function') {
+				// for form-data 1.x
+				if (options.body._lengthRetrievers && options.body._lengthRetrievers.length == 0) {
+					headers.set('content-length', options.body.getLengthSync().toString());
+				// for form-data 2.x
+				} else if (options.body.hasKnownLength && options.body.hasKnownLength()) {
+					headers.set('content-length', options.body.getLengthSync().toString());
+				}
+			// this is only necessary for older nodejs releases (before iojs merge)
+			} else if (options.body === undefined || options.body === null) {
+				headers.set('content-length', '0');
+			}
+		}
+
+		options.headers = headers.raw();
+
+		// 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
+		var req = send(options);
+		var reqTimeout;
+
+		if (options.timeout) {
+			req.once('socket', function(socket) {
+				reqTimeout = setTimeout(function() {
+					req.abort();
+					reject(new FetchError('network timeout at: ' + options.url, 'request-timeout'));
+				}, options.timeout);
+			});
+		}
+
+		req.on('error', function(err) {
+			clearTimeout(reqTimeout);
+			reject(new FetchError('request to ' + options.url + ' failed, reason: ' + err.message, 'system', err));
+		});
+
+		req.on('response', function(res) {
+			clearTimeout(reqTimeout);
+
+			// handle redirect
+			if (self.isRedirect(res.statusCode) && options.redirect !== 'manual') {
+				if (options.redirect === 'error') {
+					reject(new FetchError('redirect mode is set to error: ' + options.url, 'no-redirect'));
+					return;
+				}
+
+				if (options.counter >= options.follow) {
+					reject(new FetchError('maximum redirect reached at: ' + options.url, 'max-redirect'));
+					return;
+				}
+
+				if (!res.headers.location) {
+					reject(new FetchError('redirect location header missing at: ' + options.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) && options.method === 'POST'))
+				{
+					options.method = 'GET';
+					delete options.body;
+					delete options.headers['content-length'];
+				}
+
+				options.counter++;
+
+				resolve(Fetch(resolve_url(options.url, res.headers.location), options));
+				return;
+			}
+
+			// normalize location header for manual redirect mode
+			var headers = new Headers(res.headers);
+			if (options.redirect === 'manual' && headers.has('location')) {
+				headers.set('location', resolve_url(options.url, headers.get('location')));
+			}
+
+			// prepare response
+			var body = res.pipe(new stream.PassThrough());
+			var response_options = {
+				url: options.url
+				, status: res.statusCode
+				, statusText: res.statusMessage
+				, headers: headers
+				, size: options.size
+				, timeout: options.timeout
+			};
+
+			// response object
+			var output;
+
+			// 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 (!options.compress || options.method === 'HEAD' || !headers.has('content-encoding') || res.statusCode === 204 || res.statusCode === 304) {
+				output = new Response(body, response_options);
+				resolve(output);
+				return;
+			}
+
+			// otherwise, check for gzip or deflate
+			var name = headers.get('content-encoding');
+
+			// for gzip
+			if (name == 'gzip' || name == 'x-gzip') {
+				body = body.pipe(zlib.createGunzip());
+				output = new Response(body, response_options);
+				resolve(output);
+				return;
+
+			// for deflate
+			} else if (name == 'deflate' || name == 'x-deflate') {
+				// handle the infamous raw deflate response from old servers
+				// a hack for old IIS and Apache servers
+				var raw = res.pipe(new stream.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());
+					}
+					output = new Response(body, response_options);
+					resolve(output);
+				});
+				return;
+			}
+
+			// otherwise, use response as-is
+			output = new Response(body, response_options);
+			resolve(output);
+			return;
+		});
+
+		// accept string, buffer or readable stream as body
+		// per spec we will call tostring on non-stream objects
+		if (typeof options.body === 'string') {
+			req.write(options.body);
+			req.end();
+		} else if (options.body instanceof Buffer) {
+			req.write(options.body);
+			req.end();
+		} else if (typeof options.body === 'object' && options.body.pipe) {
+			options.body.pipe(req);
+		} else if (typeof options.body === 'object') {
+			req.write(options.body.toString());
+			req.end();
+		} else {
+			req.end();
+		}
+	});
+
+};
+
+/**
+ * Redirect code matching
+ *
+ * @param   Number   code  Status code
+ * @return  Boolean
+ */
+Fetch.prototype.isRedirect = function(code) {
+	return code === 301 || code === 302 || code === 303 || code === 307 || code === 308;
+}
+
+// expose Promise
+Fetch.Promise = global.Promise;
+Fetch.Response = Response;
+Fetch.Headers = Headers;
+Fetch.Request = Request;
--- a/node_modules/node-fetch/lib/body.js
+++ b/node_modules/node-fetch/lib/body.js
@ -0,0 +1,261 @@
+
+/**
+ * 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;
--- a/node_modules/node-fetch/lib/fetch-error.js
+++ b/node_modules/node-fetch/lib/fetch-error.js
@ -0,0 +1,33 @@
+
+/**
+ * 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);
--- a/node_modules/node-fetch/lib/headers.js
+++ b/node_modules/node-fetch/lib/headers.js
@ -0,0 +1,141 @@
+
+/**
+ * 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;
+};
--- a/node_modules/node-fetch/lib/index.es.js
+++ b/node_modules/node-fetch/lib/index.es.js
--- a/node_modules/node-fetch/lib/index.js
+++ b/node_modules/node-fetch/lib/index.js
--- a/node_modules/node-fetch/lib/index.mjs
+++ b/node_modules/node-fetch/lib/index.mjs
--- a/node_modules/node-fetch/lib/request.js
+++ b/node_modules/node-fetch/lib/request.js
@ -0,0 +1,75 @@
+
+/**
+ * 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);
+};
--- a/node_modules/node-fetch/lib/response.js
+++ b/node_modules/node-fetch/lib/response.js
@ -0,0 +1,50 @@
+
+/**
+ * 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
+	});
+};
--- a/node_modules/node-fetch/package.json
+++ b/node_modules/node-fetch/package.json
@ -0,0 +1,93 @@
+{
+  "_from": "node-fetch@^2.2.1",
+  "_id": "node-fetch@2.4.1",
+  "_inBundle": false,
+  "_integrity": "sha512-P9UbpFK87NyqBZzUuDBDz4f6Yiys8xm8j7ACDbi6usvFm6KItklQUKjeoqTrYS/S1k6I8oaOC2YLLDr/gg26Mw==",
+  "_location": "/node-fetch",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "node-fetch@^2.2.1",
+    "name": "node-fetch",
+    "escapedName": "node-fetch",
+    "rawSpec": "^2.2.1",
+    "saveSpec": null,
+    "fetchSpec": "^2.2.1"
+  },
+  "_requiredBy": [
+    "/simple-youtube-api"
+  ],
+  "_resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.4.1.tgz",
+  "_shasum": "b2e38f1117b8acbedbe0524f041fb3177188255d",
+  "_spec": "node-fetch@^2.2.1",
+  "_where": "C:\\Users\\matia\\Bot Files\\node_modules\\simple-youtube-api",
+  "author": {
+    "name": "David Frank"
+  },
+  "browser": "./browser.js",
+  "bugs": {
+    "url": "https://github.com/bitinn/node-fetch/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "A light-weight module that brings window.fetch to node.js",
+  "devDependencies": {
+    "abort-controller": "^1.1.0",
+    "abortcontroller-polyfill": "^1.3.0",
+    "babel-core": "^6.26.3",
+    "babel-plugin-istanbul": "^4.1.6",
+    "babel-preset-env": "^1.6.1",
+    "babel-register": "^6.16.3",
+    "chai": "^3.5.0",
+    "chai-as-promised": "^7.1.1",
+    "chai-iterator": "^1.1.1",
+    "chai-string": "~1.3.0",
+    "codecov": "^3.3.0",
+    "cross-env": "^5.2.0",
+    "form-data": "^2.3.3",
+    "is-builtin-module": "^1.0.0",
+    "mocha": "^5.0.0",
+    "nyc": "11.9.0",
+    "parted": "^0.1.1",
+    "promise": "^8.0.3",
+    "resumer": "0.0.0",
+    "rollup": "^0.63.4",
+    "rollup-plugin-babel": "^3.0.7",
+    "string-to-arraybuffer": "^1.0.2",
+    "url-search-params": "^1.0.2",
+    "whatwg-url": "^5.0.0"
+  },
+  "engines": {
+    "node": "4.x || >=6.0.0"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/index.mjs",
+    "lib/index.es.js",
+    "browser.js"
+  ],
+  "homepage": "https://github.com/bitinn/node-fetch",
+  "keywords": [
+    "fetch",
+    "http",
+    "promise"
+  ],
+  "license": "MIT",
+  "main": "lib/index",
+  "module": "lib/index.mjs",
+  "name": "node-fetch",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/bitinn/node-fetch.git"
+  },
+  "scripts": {
+    "build": "cross-env BABEL_ENV=rollup rollup -c",
+    "coverage": "cross-env BABEL_ENV=coverage nyc --reporter json --reporter text mocha -R spec test/test.js && codecov -f coverage/coverage-final.json",
+    "prepare": "npm run build",
+    "report": "cross-env BABEL_ENV=coverage nyc --reporter lcov --reporter text mocha -R spec test/test.js",
+    "test": "cross-env BABEL_ENV=test mocha --require babel-register test/test.js"
+  },
+  "version": "2.4.1"
+}
--- a/node_modules/node-fetch/test/dummy.txt
+++ b/node_modules/node-fetch/test/dummy.txt
@ -0,0 +1 @@
+i am a dummy
--- a/node_modules/node-fetch/test/server.js
+++ b/node_modules/node-fetch/test/server.js
@ -0,0 +1,340 @@
+
+var http = require('http');
+var parse = require('url').parse;
+var zlib = require('zlib');
+var stream = require('stream');
+var convert = require('encoding').convert;
+var Multipart = require('parted').multipart;
+
+module.exports = TestServer;
+
+function TestServer() {
+	this.server = http.createServer(this.router);
+	this.port = 30001;
+	this.hostname = 'localhost';
+	// node 8 default keepalive timeout is 5000ms
+	// make it shorter here as we want to close server quickly at the end of tests
+	this.server.keepAliveTimeout = 1000;
+	this.server.on('error', function(err) {
+		console.log(err.stack);
+	});
+	this.server.on('connection', function(socket) {
+		socket.setTimeout(1500);
+	});
+}
+
+TestServer.prototype.start = function(cb) {
+	this.server.listen(this.port, this.hostname, cb);
+}
+
+TestServer.prototype.stop = function(cb) {
+	this.server.close(cb);
+}
+
+TestServer.prototype.router = function(req, res) {
+
+	var p = parse(req.url).pathname;
+
+	if (p === '/hello') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.end('world');
+	}
+
+	if (p === '/plain') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.end('text');
+	}
+
+	if (p === '/options') {
+		res.statusCode = 200;
+		res.setHeader('Allow', 'GET, HEAD, OPTIONS');
+		res.end('hello world');
+	}
+
+	if (p === '/html') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/html');
+		res.end('<html></html>');
+	}
+
+	if (p === '/json') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'application/json');
+		res.end(JSON.stringify({
+			name: 'value'
+		}));
+	}
+
+	if (p === '/gzip') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.setHeader('Content-Encoding', 'gzip');
+		zlib.gzip('hello world', function(err, buffer) {
+			res.end(buffer);
+		});
+	}
+
+	if (p === '/deflate') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.setHeader('Content-Encoding', 'deflate');
+		zlib.deflate('hello world', function(err, buffer) {
+			res.end(buffer);
+		});
+	}
+
+	if (p === '/deflate-raw') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.setHeader('Content-Encoding', 'deflate');
+		zlib.deflateRaw('hello world', function(err, buffer) {
+			res.end(buffer);
+		});
+	}
+
+	if (p === '/sdch') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.setHeader('Content-Encoding', 'sdch');
+		res.end('fake sdch string');
+	}
+
+	if (p === '/invalid-content-encoding') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.setHeader('Content-Encoding', 'gzip');
+		res.end('fake gzip string');
+	}
+
+	if (p === '/timeout') {
+		setTimeout(function() {
+			res.statusCode = 200;
+			res.setHeader('Content-Type', 'text/plain');
+			res.end('text');
+		}, 1000);
+	}
+
+	if (p === '/slow') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.write('test');
+		setTimeout(function() {
+			res.end('test');
+		}, 1000);
+	}
+
+	if (p === '/cookie') {
+		res.statusCode = 200;
+		res.setHeader('Set-Cookie', ['a=1', 'b=1']);
+		res.end('cookie');
+	}
+
+	if (p === '/size/chunk') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		setTimeout(function() {
+			res.write('test');
+		}, 50);
+		setTimeout(function() {
+			res.end('test');
+		}, 100);
+	}
+
+	if (p === '/size/long') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.end('testtest');
+	}
+
+	if (p === '/encoding/gbk') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/html');
+		res.end(convert('<meta charset="gbk"><div>中文</div>', 'gbk'));
+	}
+
+	if (p === '/encoding/gb2312') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/html');
+		res.end(convert('<meta http-equiv="Content-Type" content="text/html; charset=gb2312"><div>中文</div>', 'gb2312'));
+	}
+
+	if (p === '/encoding/shift-jis') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/html; charset=Shift-JIS');
+		res.end(convert('<div>日本語</div>', 'Shift_JIS'));
+	}
+
+	if (p === '/encoding/euc-jp') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/xml');
+		res.end(convert('<?xml version="1.0" encoding="EUC-JP"?><title>日本語</title>', 'EUC-JP'));
+	}
+
+	if (p === '/encoding/utf8') {
+		res.statusCode = 200;
+		res.end('中文');
+	}
+
+	if (p === '/encoding/order1') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'charset=gbk; text/plain');
+		res.end(convert('中文', 'gbk'));
+	}
+
+	if (p === '/encoding/order2') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain; charset=gbk; qs=1');
+		res.end(convert('中文', 'gbk'));
+	}
+
+	if (p === '/encoding/chunked') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/html');
+		res.setHeader('Transfer-Encoding', 'chunked');
+		var padding = 'a';
+		for (var i = 0; i < 10; i++) {
+			res.write(padding);
+		}
+		res.end(convert('<meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS" /><div>日本語</div>', 'Shift_JIS'));
+	}
+
+	if (p === '/encoding/invalid') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/html');
+		res.setHeader('Transfer-Encoding', 'chunked');
+		// because node v0.12 doesn't have str.repeat
+		var padding = new Array(120 + 1).join('a');
+		for (var i = 0; i < 10; i++) {
+			res.write(padding);
+		}
+		res.end(convert('中文', 'gbk'));
+	}
+
+	if (p === '/redirect/301') {
+		res.statusCode = 301;
+		res.setHeader('Location', '/inspect');
+		res.end();
+	}
+
+	if (p === '/redirect/302') {
+		res.statusCode = 302;
+		res.setHeader('Location', '/inspect');
+		res.end();
+	}
+
+	if (p === '/redirect/303') {
+		res.statusCode = 303;
+		res.setHeader('Location', '/inspect');
+		res.end();
+	}
+
+	if (p === '/redirect/307') {
+		res.statusCode = 307;
+		res.setHeader('Location', '/inspect');
+		res.end();
+	}
+
+	if (p === '/redirect/308') {
+		res.statusCode = 308;
+		res.setHeader('Location', '/inspect');
+		res.end();
+	}
+
+	if (p === '/redirect/chain') {
+		res.statusCode = 301;
+		res.setHeader('Location', '/redirect/301');
+		res.end();
+	}
+
+	if (p === '/error/redirect') {
+		res.statusCode = 301;
+		//res.setHeader('Location', '/inspect');
+		res.end();
+	}
+
+	if (p === '/error/400') {
+		res.statusCode = 400;
+		res.setHeader('Content-Type', 'text/plain');
+		res.end('client error');
+	}
+
+	if (p === '/error/404') {
+		res.statusCode = 404;
+		res.setHeader('Content-Encoding', 'gzip');
+		res.end();
+	}
+
+	if (p === '/error/500') {
+		res.statusCode = 500;
+		res.setHeader('Content-Type', 'text/plain');
+		res.end('server error');
+	}
+
+	if (p === '/error/reset') {
+		res.destroy();
+	}
+
+	if (p === '/error/json') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'application/json');
+		res.end('invalid json');
+	}
+
+	if (p === '/no-content') {
+		res.statusCode = 204;
+		res.end();
+	}
+
+	if (p === '/no-content/gzip') {
+		res.statusCode = 204;
+		res.setHeader('Content-Encoding', 'gzip');
+		res.end();
+	}
+
+	if (p === '/not-modified') {
+		res.statusCode = 304;
+		res.end();
+	}
+
+	if (p === '/not-modified/gzip') {
+		res.statusCode = 304;
+		res.setHeader('Content-Encoding', 'gzip');
+		res.end();
+	}
+
+	if (p === '/inspect') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'application/json');
+		var body = '';
+		req.on('data', function(c) { body += c });
+		req.on('end', function() {
+			res.end(JSON.stringify({
+				method: req.method,
+				url: req.url,
+				headers: req.headers,
+				body: body
+			}));
+		});
+	}
+
+	if (p === '/multipart') {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'application/json');
+		var parser = new Multipart(req.headers['content-type']);
+		var body = '';
+		parser.on('part', function(field, part) {
+			body += field + '=' + part;
+		});
+		parser.on('end', function() {
+			res.end(JSON.stringify({
+				method: req.method,
+				url: req.url,
+				headers: req.headers,
+				body: body
+			}));
+		});
+		req.pipe(parser);
+	}
+}
--- a/node_modules/node-fetch/test/test.js
+++ b/node_modules/node-fetch/test/test.js