code:
import Stream from 'stream';
import http from 'http';
import Url from 'url';
import whatwgUrl from 'whatwg-url';
import https from 'https';
import zlib from 'zlib';

// Based on https://github.com/tmpvar/jsdom/blob/aa85b2abf07766ff7bf5c1f6daafb3726f2f2db5/lib/jsdom/living/blob.js

// fix for "Readable" isn't a named export issue
const Readable = Stream.Readable;

const BUFFER = Symbol('buffer');
const TYPE = Symbol('type');

class Blob {
	constructor() {
		this[TYPE] = '';

		const blobParts = arguments[0];
		const options = arguments[1];

		const buffers = [];
		let size = 0;

		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));
				}
				size += buffer.length;
				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[BUFFER].length;
	}
	get type() {
		return this[TYPE];
	}
	text() {
		return Promise.resolve(this[BUFFER].toString());
	}
	arrayBuffer() {
		const buf = this[BUFFER];
		const ab = buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
		return Promise.resolve(ab);
	}
	stream() {
		const readable = new Readable();
		readable._read = function () {};
		readable.push(this[BUFFER]);
		readable.push(null);
		return readable;
	}
	toString() {
		return '[object Blob]';
	}
	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;
		return blob;
	}
}

Object.defineProperties(Blob.prototype, {
	size: { enumerable: true },
	type: { enumerable: true },
	slice: { enumerable: true }
});

Object.defineProperty(Blob.prototype, Symbol.toStringTag, {
	value: 'Blob',
	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';

let convert;
try {
	convert = require('encoding').convert;
} catch (e) {}

const INTERNALS = Symbol('Body internals');

// fix an issue where "PassThrough" isn't a named export for node <10
const PassThrough = Stream.PassThrough;

/**
 * Body mixin
 *
 * Ref: https://fetch.spec.whatwg.org/#body
 *
 * @param   Stream  body  Readable stream
 * @param   Object  opts  Response options
 * @return  Void
 */
function Body(body) {
	var _this = this;

	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 (isURLSearchParams(body)) {
		// body is a URLSearchParams
		body = Buffer.from(body.toString());
	} else if (isBlob(body)) ; else if (Buffer.isBuffer(body)) ; else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {
		// body is ArrayBuffer
		body = Buffer.from(body);
	} else if (ArrayBuffer.isView(body)) {
		// body is ArrayBufferView
		body = Buffer.from(body.buffer, body.byteOffset, body.byteLength);
	} else if (body instanceof Stream) ; else {
		// none of the above
		// coerce to string then buffer
		body = Buffer.from(String(body));
	}
	this[INTERNALS] = {
		body,
		disturbed: false,
		error: null
	};
	this.size = size;
	this.timeout = timeout;

	if (body instanceof Stream) {
		body.on('error', function (err) {
			const error = err.name === 'AbortError' ? err : new FetchError(`Invalid response body while trying to fetch ${_this.url}: ${err.message}`, 'system', err);
			_this[INTERNALS].error = error;
		});
	}
}

Body.prototype = {
	get body() {
		return this[INTERNALS].body;
	},

	get bodyUsed() {
		return this[INTERNALS].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 _this2 = 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 ${_this2.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 _this3 = this;

		return consumeBody.call(this).then(function (buffer) {
			return convertBody(buffer, _this3.headers);
		});
	}
};

// In browsers, all properties are enumerable.
Object.defineProperties(Body.prototype, {
	body: { enumerable: true },
	bodyUsed: { enumerable: true },
	arrayBuffer: { enumerable: true },
	blob: { enumerable: true },
	json: { enumerable: true },
	text: { enumerable: true }
});

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);
		}
	}
};

/**
 * Consume and convert an entire Body to a Buffer.
 *
 * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body
 *
 * @return  Promise
 */
function consumeBody() {
	var _this4 = this;

	if (this[INTERNALS].disturbed) {
		return Body.Promise.reject(new TypeError(`body used already for: ${this.url}`));
	}

	this[INTERNALS].disturbed = true;

	if (this[INTERNALS].error) {
		return Body.Promise.reject(this[INTERNALS].error);
	}

	let body = this.body;

	// body is null
	if (body === null) {
		return Body.Promise.resolve(Buffer.alloc(0));
	}

	// body is blob
	if (isBlob(body)) {
		body = body.stream();
	}

	// body is buffer
	if (Buffer.isBuffer(body)) {
		return Body.Promise.resolve(body);
	}

	// istanbul ignore if: should never happen
	if (!(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 (_this4.timeout) {
			resTimeout = setTimeout(function () {
				abort = true;
				reject(new FetchError(`Response timeout while trying to fetch ${_this4.url} (over ${_this4.timeout}ms)`, 'body-timeout'));
			}, _this4.timeout);
		}

		// handle stream errors
		body.on('error', function (err) {
			if (err.name === 'AbortError') {
				// if the request was aborted, reject with this Error
				abort = true;
				reject(err);
			} else {
				// other errors, such as incorrect content-encoding
				reject(new FetchError(`Invalid response body while trying to fetch ${_this4.url}: ${err.message}`, 'system', err));
			}
		});

		body.on('data', function (chunk) {
			if (abort || chunk === null) {
				return;
			}

			if (_this4.size && accumBytes + chunk.length > _this4.size) {
				abort = true;
				reject(new FetchError(`content size at ${_this4.url} over limit: ${_this4.size}`, 'max-size'));
				return;
			}

			accumBytes += chunk.length;
			accum.push(chunk);
		});

		body.on('end', function () {
			if (abort) {
				return;
			}

			clearTimeout(resTimeout);

			try {
				resolve(Buffer.concat(accum, accumBytes));
			} catch (err) {
				// handle streams that have accumulated too much data (issue #414)
				reject(new FetchError(`Could not create Buffer from response body for ${_this4.url}: ${err.message}`, 'system', err));
			}
		});
	});
}

/**
 * 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 = /<meta[\s]+?content=(['"])(.+?)\1[\s]+?http-equiv=(['"])content-type\3/i.exec(str);
			if (res) {
				res.pop(); // drop last quote
			}
		}

		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';
}

/**
 * Check if `obj` is a W3C `Blob` object (which `File` inherits from)
 * @param  {*} obj
 * @return {boolean}
 */
function isBlob(obj) {
	return typeof obj === 'object' && typeof obj.arrayBuffer === 'function' && typeof obj.type === 'string' && typeof obj.stream === 'function' && typeof obj.constructor === 'function' && typeof obj.constructor.name === 'string' && /^(Blob|File)$/.test(obj.constructor.name) && /^(Blob|File)$/.test(obj[Symbol.toStringTag]);
}

/**
 * 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();
		p2 = new PassThrough();
		body.pipe(p1);
		body.pipe(p2);
		// set instance body to teed body and return the other teed body
		instance[INTERNALS].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.
 *
 * @param   Mixed  instance  Any options.body input
 */
function extractContentType(body) {
	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 (isBlob(body)) {
		// body is blob
		return body.type || null;
	} else if (Buffer.isBuffer(body)) {
		// body is buffer
		return null;
	} else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {
		// body is ArrayBuffer
		return null;
	} else if (ArrayBuffer.isView(body)) {
		// body is ArrayBufferView
		return null;
	} else if (typeof body.getBoundary === 'function') {
		// detect form data input from form-data module
		return `multipart/form-data;boundary=${body.getBoundary()}`;
	} else if (body instanceof Stream) {
		// body is stream
		// can't really do much about this
		return null;
	} else {
		// Body constructor defaults other things to string
		return 'text/plain;charset=UTF-8';
	}
}

/**
 * The Fetch Standard treats this as if "total bytes" is a property on the body.
 * For us, we have to explicitly get it with a function.
 *
 * ref: https://fetch.spec.whatwg.org/#concept-body-total-bytes
 *
 * @param   Body    instance   Instance of Body
 * @return  Number?            Number of bytes, or null if not possible
 */
function getTotalBytes(instance) {
	const body = instance.body;

	if (body === null) {
		// body is null
		return 0;
	} else if (isBlob(body)) {
		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
		return null;
	}
}

/**
 * Write a Body to a Node.js WritableStream (e.g. http.Request) object.
 *
 * @param   Body    instance   Instance of Body
 * @return  Void
 */
function writeToStream(dest, instance) {
	const body = instance.body;

	if (body === null) {
		// body is null
		dest.end();
	} else if (isBlob(body)) {
		body.stream().pipe(dest);
	} 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;

/**
 * headers.js
 *
 * Headers class offers convenient helpers
 */

const invalidTokenRegex = /[^\^_`a-zA-Z\-0-9!#$%&'*+.|~]/;
const invalidHeaderCharRegex = /[^\t\x20-\x7e\x80-\xff]/;

function validateName(name) {
	name = `${name}`;
	if (invalidTokenRegex.test(name) || name === '') {
		throw new TypeError(`${name} is not a legal HTTP header name`);
	}
}

function validateValue(value) {
	value = `${value}`;
	if (invalidHeaderCharRegex.test(value)) {
		throw new TypeError(`${value} is not a legal HTTP header value`);
	}
}

/**
 * Find the key in the map object given a header name.
 *
 * Returns undefined if not found.
 *
 * @param   String  name  Header name
 * @return  String|Undefined
 */
function find(map, name) {
	name = name.toLowerCase();
	for (const key in map) {
		if (key.toLowerCase() === name) {
			return key;
		}
	}
	return undefined;
}

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) ; 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');
		}
	}

	/**
  * Return combined header value given name
  *
  * @param   String  name  Header name
  * @return  Mixed
  */
	get(name) {
		name = `${name}`;
		validateName(name);
		const key = find(this[MAP], name);
		if (key === undefined) {
			return null;
		}

		return this[MAP][key].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 = getHeaders(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 = getHeaders(this);
			i++;
		}
	}

	/**
  * Overwrite header values given name
  *
  * @param   String  name   Header name
  * @param   String  value  Header value
  * @return  Void
  */
	set(name, value) {
		name = `${name}`;
		value = `${value}`;
		validateName(name);
		validateValue(value);
		const key = find(this[MAP], name);
		this[MAP][key !== undefined ? key : name] = [value];
	}

	/**
  * Append a value onto existing header
  *
  * @param   String  name   Header name
  * @param   String  value  Header value
  * @return  Void
  */
	append(name, value) {
		name = `${name}`;
		value = `${value}`;
		validateName(name);
		validateValue(value);
		const key = find(this[MAP], name);
		if (key !== undefined) {
			this[MAP][key].push(value);
		} else {
			this[MAP][name] = [value];
		}
	}

	/**
  * Check for header name existence
  *
  * @param   String   name  Header name
  * @return  Boolean
  */
	has(name) {
		name = `${name}`;
		validateName(name);
		return find(this[MAP], name) !== undefined;
	}

	/**
  * Delete all header values given name
  *
  * @param   String  name  Header name
  * @return  Void
  */
	delete(name) {
		name = `${name}`;
		validateName(name);
		const key = find(this[MAP], name);
		if (key !== undefined) {
			delete this[MAP][key];
		}
	}

	/**
  * 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: 'Headers',
	writable: false,
	enumerable: false,
	configurable: true
});

Object.defineProperties(Headers.prototype, {
	get: { enumerable: true },
	forEach: { enumerable: true },
	set: { enumerable: true },
	append: { enumerable: true },
	has: { enumerable: true },
	delete: { enumerable: true },
	keys: { enumerable: true },
	values: { enumerable: true },
	entries: { enumerable: true }
});

function getHeaders(headers) {
	let kind = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'key+value';

	const keys = Object.keys(headers[MAP]).sort();
	return keys.map(kind === 'key' ? function (k) {
		return k.toLowerCase();
	} : kind === 'value' ? function (k) {
		return headers[MAP][k].join(', ');
	} : function (k) {
		return [k.toLowerCase(), headers[MAP][k].join(', ')];
	});
}

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 = getHeaders(target, kind);
		const len = values.length;
		if (index >= len) {
			return {
				value: undefined,
				done: true
			};
		}

		this[INTERNAL].index = index + 1;

		return {
			value: values[index],
			done: false
		};
	}
}, Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]())));

Object.defineProperty(HeadersIteratorPrototype, Symbol.toStringTag, {
	value: 'HeadersIterator',
	writable: false,
	enumerable: false,
	configurable: true
});

/**
 * Export the Headers object in a form that Node.js can consume.
 *
 * @param   Headers  headers
 * @return  Object
 */
function exportNodeCompatibleHeaders(headers) {
	const obj = Object.assign({ __proto__: null }, headers[MAP]);

	// http.request() only supports string as Host header. This hack makes
	// specifying custom Host header possible.
	const hostHeaderKey = find(headers[MAP], 'Host');
	if (hostHeaderKey !== undefined) {
		obj[hostHeaderKey] = obj[hostHeaderKey][0];
	}

	return obj;
}

/**
 * Create a Headers object from an object of headers, ignoring those that do
 * not conform to HTTP grammar productions.
 *
 * @param   Object  obj  Object of headers
 * @return  Headers
 */
function createHeadersLenient(obj) {
	const headers = new Headers();
	for (const name of Object.keys(obj)) {
		if (invalidTokenRegex.test(name)) {
			continue;
		}
		if (Array.isArray(obj[name])) {
			for (const val of obj[name]) {
				if (invalidHeaderCharRegex.test(val)) {
					continue;
				}
				if (headers[MAP][name] === undefined) {
					headers[MAP][name] = [val];
				} else {
					headers[MAP][name].push(val);
				}
			}
		} else if (!invalidHeaderCharRegex.test(obj[name])) {
			headers[MAP][name] = [obj[name]];
		}
	}
	return headers;
}

const INTERNALS$1 = Symbol('Response internals');

// fix an issue where "STATUS_CODES" aren't a named export for node <10
const STATUS_CODES = http.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);

		const status = opts.status || 200;
		const headers = new Headers(opts.headers);

		if (body != null && !headers.has('Content-Type')) {
			const contentType = extractContentType(body);
			if (contentType) {
				headers.append('Content-Type', contentType);
			}
		}

		this[INTERNALS$1] = {
			url: opts.url,
			status,
			statusText: opts.statusText || STATUS_CODES[status],
			headers,
			counter: opts.counter
		};
	}

	get url() {
		return this[INTERNALS$1].url || '';
	}

	get status() {
		return this[INTERNALS$1].status;
	}

	/**
  * Convenience property representing if the request ended normally
  */
	get ok() {
		return this[INTERNALS$1].status >= 200 && this[INTERNALS$1].status < 300;
	}

	get redirected() {
		return this[INTERNALS$1].counter > 0;
	}

	get statusText() {
		return this[INTERNALS$1].statusText;
	}

	get headers() {
		return this[INTERNALS$1].headers;
	}

	/**
  * 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,
			redirected: this.redirected
		});
	}
}

Body.mixIn(Response.prototype);

Object.defineProperties(Response.prototype, {
	url: { enumerable: true },
	status: { enumerable: true },
	ok: { enumerable: true },
	redirected: { enumerable: true },
	statusText: { enumerable: true },
	headers: { enumerable: true },
	clone: { enumerable: true }
});

Object.defineProperty(Response.prototype, Symbol.toStringTag, {
	value: 'Response',
	writable: false,
	enumerable: false,
	configurable: true
});

const INTERNALS$2 = Symbol('Request internals');
const URL = Url.URL || whatwgUrl.URL;

// fix an issue where "format", "parse" aren't a named export for node <10
const parse_url = Url.parse;
const format_url = Url.format;

/**
 * Wrapper around `new URL` to handle arbitrary URLs
 *
 * @param  {string} urlStr
 * @return {void}
 */
function parseURL(urlStr) {
	/*
 	Check whether the URL is absolute or not
 		Scheme: https://tools.ietf.org/html/rfc3986#section-3.1
 	Absolute URL: https://tools.ietf.org/html/rfc3986#section-4.3
 */
	if (/^[a-zA-Z][a-zA-Z\d+\-.]*:/.exec(urlStr)) {
		urlStr = new URL(urlStr).toString();
	}

	// Fallback to old implementation for arbitrary URLs
	return parse_url(urlStr);
}

const streamDestructionSupported = 'destroy' in Stream.Readable.prototype;

/**
 * Check if a value is an instance of Request.
 *
 * @param   Mixed   input
 * @return  Boolean
 */
function isRequest(input) {
	return typeof input === 'object' && typeof input[INTERNALS$2] === 'object';
}

function isAbortSignal(signal) {
	const proto = signal && typeof signal === 'object' && Object.getPrototypeOf(signal);
	return !!(proto && proto.constructor.name === 'AbortSignal');
}

/**
 * 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 (!isRequest(input)) {
			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 = parseURL(input.href);
			} else {
				// coerce input to a string before attempting to parse
				parsedURL = parseURL(`${input}`);
			}
			input = {};
		} else {
			parsedURL = parseURL(input.url);
		}

		let method = init.method || input.method || 'GET';
		method = method.toUpperCase();

		if ((init.body != null || isRequest(input) && 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 : isRequest(input) && input.body !== null ? clone(input) : null;

		Body.call(this, inputBody, {
			timeout: init.timeout || input.timeout || 0,
			size: init.size || input.size || 0
		});

		const headers = new Headers(init.headers || input.headers || {});

		if (inputBody != null && !headers.has('Content-Type')) {
			const contentType = extractContentType(inputBody);
			if (contentType) {
				headers.append('Content-Type', contentType);
			}
		}

		let signal = isRequest(input) ? input.signal : null;
		if ('signal' in init) signal = init.signal;

		if (signal != null && !isAbortSignal(signal)) {
			throw new TypeError('Expected signal to be an instanceof AbortSignal');
		}

		this[INTERNALS$2] = {
			method,
			redirect: init.redirect || input.redirect || 'follow',
			headers,
			parsedURL,
			signal
		};

		// node-fetch-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;
	}

	get method() {
		return this[INTERNALS$2].method;
	}

	get url() {
		return format_url(this[INTERNALS$2].parsedURL);
	}

	get headers() {
		return this[INTERNALS$2].headers;
	}

	get redirect() {
		return this[INTERNALS$2].redirect;
	}

	get signal() {
		return this[INTERNALS$2].signal;
	}

	/**
  * Clone this request
  *
  * @return  Request
  */
	clone() {
		return new Request(this);
	}
}

Body.mixIn(Request.prototype);

Object.defineProperty(Request.prototype, Symbol.toStringTag, {
	value: 'Request',
	writable: false,
	enumerable: false,
	configurable: true
});

Object.defineProperties(Request.prototype, {
	method: { enumerable: true },
	url: { enumerable: true },
	headers: { enumerable: true },
	redirect: { enumerable: true },
	clone: { enumerable: true },
	signal: { enumerable: true }
});

/**
 * Convert a Request to Node.js http request options.
 *
 * @param   Request  A Request instance
 * @return  Object   The options object to be passed to http.request
 */
function getNodeRequestOptions(request) {
	const parsedURL = request[INTERNALS$2].parsedURL;
	const headers = new Headers(request[INTERNALS$2].headers);

	// fetch step 1.3
	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');
	}

	if (request.signal && request.body instanceof Stream.Readable && !streamDestructionSupported) {
		throw new Error('Cancellation of streamed requests with AbortSignal is not supported in node < 8');
	}

	// HTTP-network-or-cache fetch steps 2.4-2.7
	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 2.11
	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 2.15
	if (request.compress && !headers.has('Accept-Encoding')) {
		headers.set('Accept-Encoding', 'gzip,deflate');
	}

	let agent = request.agent;
	if (typeof agent === 'function') {
		agent = agent(parsedURL);
	}

	// HTTP-network fetch step 4.2
	// chunked encoding is handled by Node.js

	return Object.assign({}, parsedURL, {
		method: request.method,
		headers: exportNodeCompatibleHeaders(headers),
		agent
	});
}

/**
 * abort-error.js
 *
 * AbortError interface for cancelled requests
 */

/**
 * Create AbortError instance
 *
 * @param   String      message      Error message for human
 * @return  AbortError
 */
function AbortError(message) {
  Error.call(this, message);

  this.type = 'aborted';
  this.message = message;

  // hide custom error implementation details from end-users
  Error.captureStackTrace(this, this.constructor);
}

AbortError.prototype = Object.create(Error.prototype);
AbortError.prototype.constructor = AbortError;
AbortError.prototype.name = 'AbortError';

const URL$1 = Url.URL || whatwgUrl.URL;

// fix an issue where "PassThrough", "resolve" aren't a named export for node <10
const PassThrough$1 = Stream.PassThrough;

const isDomainOrSubdomain = function isDomainOrSubdomain(destination, original) {
	const orig = new URL$1(original).hostname;
	const dest = new URL$1(destination).hostname;

	return orig === dest || orig[orig.length - dest.length - 1] === '.' && orig.endsWith(dest);
};

/**
 * isSameProtocol reports whether the two provided URLs use the same protocol.
 *
 * Both domains must already be in canonical form.
 * @param {string|URL} original
 * @param {string|URL} destination
 */
const isSameProtocol = function isSameProtocol(destination, original) {
	const orig = new URL$1(original).protocol;
	const dest = new URL$1(destination).protocol;

	return orig === dest;
};

/**
 * 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;
		const signal = request.signal;

		let response = null;

		const abort = function abort() {
			let error = new AbortError('The user aborted a request.');
			reject(error);
			if (request.body && request.body instanceof Stream.Readable) {
				destroyStream(request.body, error);
			}
			if (!response || !response.body) return;
			response.body.emit('error', error);
		};

		if (signal && signal.aborted) {
			abort();
			return;
		}

		const abortAndFinalize = function abortAndFinalize() {
			abort();
			finalize();
		};

		// send request
		const req = send(options);
		let reqTimeout;

		if (signal) {
			signal.addEventListener('abort', abortAndFinalize);
		}

		function finalize() {
			req.abort();
			if (signal) signal.removeEventListener('abort', abortAndFinalize);
			clearTimeout(reqTimeout);
		}

		if (request.timeout) {
			req.once('socket', function (socket) {
				reqTimeout = setTimeout(function () {
					reject(new FetchError(`network timeout at: ${request.url}`, 'request-timeout'));
					finalize();
				}, request.timeout);
			});
		}

		req.on('error', function (err) {
			reject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err));

			if (response && response.body) {
				destroyStream(response.body, err);
			}

			finalize();
		});

		fixResponseChunkedTransferBadEnding(req, function (err) {
			if (signal && signal.aborted) {
				return;
			}

			if (response && response.body) {
				destroyStream(response.body, err);
			}
		});

		/* c8 ignore next 18 */
		if (parseInt(process.version.substring(1)) < 14) {
			// Before Node.js 14, pipeline() does not fully support async iterators and does not always
			// properly handle when the socket close/end events are out of order.
			req.on('socket', function (s) {
				s.addListener('close', function (hadError) {
					// if a data listener is still present we didn't end cleanly
					const hasDataListener = s.listenerCount('data') > 0;

					// if end happened before close but the socket didn't emit an error, do it now
					if (response && hasDataListener && !hadError && !(signal && signal.aborted)) {
						const err = new Error('Premature close');
						err.code = 'ERR_STREAM_PREMATURE_CLOSE';
						response.body.emit('error', err);
					}
				});
			});
		}

		req.on('response', function (res) {
			clearTimeout(reqTimeout);

			const headers = createHeadersLenient(res.headers);

			// HTTP fetch step 5
			if (fetch.isRedirect(res.statusCode)) {
				// HTTP fetch step 5.2
				const location = headers.get('Location');

				// HTTP fetch step 5.3
				let locationURL = null;
				try {
					locationURL = location === null ? null : new URL$1(location, request.url).toString();
				} catch (err) {
					// error here can only be invalid URL in Location: header
					// do not throw when options.redirect == manual
					// let the user extract the errorneous redirect URL
					if (request.redirect !== 'manual') {
						reject(new FetchError(`uri requested responds with an invalid redirect URL: ${location}`, 'invalid-redirect'));
						finalize();
						return;
					}
				}

				// HTTP fetch step 5.5
				switch (request.redirect) {
					case 'error':
						reject(new FetchError(`uri requested responds with a redirect, redirect mode is set to error: ${request.url}`, 'no-redirect'));
						finalize();
						return;
					case 'manual':
						// node-fetch-specific step: make manual redirect a bit easier to use by setting the Location header value to the resolved URL.
						if (locationURL !== null) {
							// handle corrupted header
							try {
								headers.set('Location', locationURL);
							} catch (err) {
								// istanbul ignore next: nodejs server prevent invalid response headers, we can't test this through normal request
								reject(err);
							}
						}
						break;
					case 'follow':
						// HTTP-redirect fetch step 2
						if (locationURL === null) {
							break;
						}

						// HTTP-redirect fetch step 5
						if (request.counter >= request.follow) {
							reject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect'));
							finalize();
							return;
						}

						// HTTP-redirect fetch step 6 (counter increment)
						// Create a new Request object.
						const requestOpts = {
							headers: new Headers(request.headers),
							follow: request.follow,
							counter: request.counter + 1,
							agent: request.agent,
							compress: request.compress,
							method: request.method,
							body: request.body,
							signal: request.signal,
							timeout: request.timeout,
							size: request.size
						};

						if (!isDomainOrSubdomain(request.url, locationURL) || !isSameProtocol(request.url, locationURL)) {
							for (const name of ['authorization', 'www-authenticate', 'cookie', 'cookie2']) {
								requestOpts.headers.delete(name);
							}
						}

						// HTTP-redirect fetch step 9
						if (res.statusCode !== 303 && request.body && getTotalBytes(request) === null) {
							reject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect'));
							finalize();
							return;
						}

						// HTTP-redirect fetch step 11
						if (res.statusCode === 303 || (res.statusCode === 301 || res.statusCode === 302) && request.method === 'POST') {
							requestOpts.method = 'GET';
							requestOpts.body = undefined;
							requestOpts.headers.delete('content-length');
						}

						// HTTP-redirect fetch step 15
						resolve(fetch(new Request(locationURL, requestOpts)));
						finalize();
						return;
				}
			}

			// prepare response
			res.once('end', function () {
				if (signal) signal.removeEventListener('abort', abortAndFinalize);
			});
			let body = res.pipe(new PassThrough$1());

			const response_options = {
				url: request.url,
				status: res.statusCode,
				statusText: res.statusMessage,
				headers: headers,
				size: request.size,
				timeout: request.timeout,
				counter: request.counter
			};

			// HTTP-network fetch step 12.1.1.3
			const codings = headers.get('Content-Encoding');

			// HTTP-network fetch step 12.1.1.4: 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) {
				response = new Response(body, response_options);
				resolve(response);
				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));
				response = new Response(body, response_options);
				resolve(response);
				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$1());
				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());
					}
					response = new Response(body, response_options);
					resolve(response);
				});
				raw.on('end', function () {
					// some old IIS servers return zero-length OK deflate responses, so 'data' is never emitted.
					if (!response) {
						response = new Response(body, response_options);
						resolve(response);
					}
				});
				return;
			}

			// for br
			if (codings == 'br' && typeof zlib.createBrotliDecompress === 'function') {
				body = body.pipe(zlib.createBrotliDecompress());
				response = new Response(body, response_options);
				resolve(response);
				return;
			}

			// otherwise, use response as-is
			response = new Response(body, response_options);
			resolve(response);
		});

		writeToStream(req, request);
	});
}
function fixResponseChunkedTransferBadEnding(request, errorCallback) {
	let socket;

	request.on('socket', function (s) {
		socket = s;
	});

	request.on('response', function (response) {
		const headers = response.headers;

		if (headers['transfer-encoding'] === 'chunked' && !headers['content-length']) {
			response.once('close', function (hadError) {
				// tests for socket presence, as in some situations the
				// the 'socket' event is not triggered for the request
				// (happens in deno), avoids `TypeError`
				// if a data listener is still present we didn't end cleanly
				const hasDataListener = socket && socket.listenerCount('data') > 0;

				if (hasDataListener && !hadError) {
					const err = new Error('Premature close');
					err.code = 'ERR_STREAM_PREMATURE_CLOSE';
					errorCallback(err);
				}
			});
		}
	});
}

function destroyStream(stream, err) {
	if (stream.destroy) {
		stream.destroy(err);
	} else {
		// node < 8
		stream.emit('error', err);
		stream.end();
	}
}

/**
 * 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;

export default fetch;
export { Headers, Request, Response, FetchError, AbortError };


node-fetch

description: A light-weight module that brings window.fetch to node.js

build: cross-env BABEL_ENV=rollup rollup -c

prepare: npm run build

test: cross-env BABEL_ENV=test mocha --require babel-register --throw-deprecation test/test.js

report: cross-env BABEL_ENV=coverage nyc --reporter lcov --reporter text mocha -R spec test/test.js

coverage: cross-env BABEL_ENV=coverage nyc --reporter json --reporter text mocha -R spec test/test.js && codecov -f coverage/coverage-final.json

type: git

keywords: fetch http promise

author: David Frank

license: MIT

license: mit


code:
Forge ChangeLog
===============

## 1.3.1 - 2022-03-29

### Fixes
- RFC 3447 and RFC 8017 allow for optional `DigestAlgorithm` `NULL` parameters
  for `sha*` algorithms and require `NULL` paramters for `md2` and `md5`
  algorithms.

## 1.3.0 - 2022-03-17

### Security
- Three RSA PKCS#1 v1.5 signature verification issues were reported by Moosa
  Yahyazadeh (moosa-yahyazadeh@uiowa.edu).
- **HIGH**: Leniency in checking `digestAlgorithm` structure can lead to
  signature forgery.
  - The code is lenient in checking the digest algorithm structure. This can
    allow a crafted structure that steals padding bytes and uses unchecked
    portion of the PKCS#1 encoded message to forge a signature when a low
    public exponent is being used. For more information, please see
    ["Bleichenbacher's RSA signature forgery based on implementation
    error"](https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE/)
    by Hal Finney.
  - CVE ID: [CVE-2022-24771](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24771)
  - GHSA ID: [GHSA-cfm4-qjh2-4765](https://github.com/digitalbazaar/forge/security/advisories/GHSA-cfm4-qjh2-4765)
- **HIGH**: Failing to check tailing garbage bytes can lead to signature
  forgery.
  - The code does not check for tailing garbage bytes after decoding a
    `DigestInfo` ASN.1 structure. This can allow padding bytes to be removed
    and garbage data added to forge a signature when a low public exponent is
    being used.  For more information, please see ["Bleichenbacher's RSA
    signature forgery based on implementation
    error"](https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QE/)
    by Hal Finney.
  - CVE ID: [CVE-2022-24772](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24772)
  - GHSA ID: [GHSA-x4jg-mjrx-434g](https://github.com/digitalbazaar/forge/security/advisories/GHSA-x4jg-mjrx-434g)
- **MEDIUM**: Leniency in checking type octet.
  - `DigestInfo` is not properly checked for proper ASN.1 structure. This can
    lead to successful verification with signatures that contain invalid
    structures but a valid digest.
  - CVE ID: [CVE-2022-24773](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24773)
  - GHSA ID: [GHSA-2r2c-g63r-vccr](https://github.com/digitalbazaar/forge/security/advisories/GHSA-2r2c-g63r-vccr)

### Fixed
- [asn1] Add fallback to pretty print invalid UTF8 data.
- [asn1] `fromDer` is now more strict and will default to ensuring all input
  bytes are parsed or throw an error. A new option `parseAllBytes` can disable
  this behavior.
  - **NOTE**: The previous behavior is being changed since it can lead to
    security issues with crafted inputs. It is possible that code doing custom
    DER parsing may need to adapt to this new behavior and optional flag.
- [rsa] Add and use a validator to check for proper structure of parsed ASN.1
  `RSASSA-PKCS-v1_5` `DigestInfo` data. Additionally check that the hash
  algorithm identifier is a known value from RFC 8017
  `PKCS1-v1-5DigestAlgorithms`. An invalid `DigestInfo` or algorithm identifier
  will now throw an error.
  - **NOTE**: The previous lenient behavior is being changed to be more strict
    since it could lead to security issues with crafted inputs. It is possible
    that code may have to handle the errors from these stricter checks.

### Added
- [oid] Added missing RFC 8017 PKCS1-v1-5DigestAlgorithms algorithm
  identifiers:
  - `1.2.840.113549.2.2` / `md2`
  - `2.16.840.1.101.3.4.2.4` / `sha224`
  - `2.16.840.1.101.3.4.2.5` / `sha512-224`
  - `2.16.840.1.101.3.4.2.6` / `sha512-256`

## 1.2.1 - 2022-01-11

### Fixed
- [tests]: Load entire module to improve top-level testing and coverage
  reporting.
- [log]: Refactor logging setup to avoid use of `URLSearchParams`.

## 1.2.0 - 2022-01-07

### Fixed
- [x509] 'Expected' and 'Actual' issuers were backwards in verification failure
  message.

### Added
- [oid,x509]: Added OID `1.3.14.3.2.29 / sha1WithRSASignature` for sha1 with
  RSA. Considered a deprecated equivalent to `1.2.840.113549.1.1.5 /
  sha1WithRSAEncryption`. See [discussion and
  links](https://github.com/digitalbazaar/forge/issues/825).

### Changed
- [x509]: Reduce duplicate code. Add helper function to create a signature
  digest given an signature algorithm OID. Add helper function to verify
  signatures.

## 1.1.0 - 2022-01-06

### Fixed
- [x509]: Correctly compute certificate issuer and subject hashes to match
  behavior of openssl.
- [pem]: Accept certificate requests with "NEW" in the label. "BEGIN NEW
  CERTIFICATE REQUEST" handled as "BEGIN CERTIFICATE REQUEST".

## 1.0.0 - 2022-01-04

### Notes
- **1.0.0**!
- This project is over a decade old! Time for a 1.0.0 release.
- The URL related changes may expose bugs in some of the networking related
  code (unrelated to the much wider used cryptography code). The automated and
  manual test coverage for this code is weak at best. Issues or patches to
  update the code or tests would be appreciated.

### Removed
- **SECURITY**, **BREAKING**: Remove `forge.debug` API. The API has the
  potential for prototype pollution. This API was only briefly used by the
  maintainers for internal project debug purposes and was never intended to be
  used with untrusted user inputs. This API was not documented or advertised
  and is being removed rather than fixed.
- **SECURITY**, **BREAKING**: Remove `forge.util.parseUrl()` (and
  `forge.http.parseUrl` alias) and use the [WHATWG URL
  Standard](https://url.spec.whatwg.org/). `URL` is supported by modern browers
  and modern Node.js. This change is needed to address URL parsing security
  issues. If `forge.util.parseUrl()` is used directly or through `forge.xhr` or
  `forge.http` APIs, and support is needed for environments without `URL`
  support, then a polyfill must be used.
- **BREAKING**: Remove `forge.task` API. This API was never used, documented,
  or advertised by the maintainers. If anyone was using this API and wishes to
  continue development it in other project, please let the maintainers know.
  Due to use in the test suite, a modified version is located in
  `tests/support/`.
- **BREAKING**: Remove `forge.util.makeLink`, `forge.util.makeRequest`,
  `forge.util.parseFragment`, `forge.util.getQueryVariables`. Replace with
  `URL`, `URLSearchParams`, and custom code as needed.

### Changed
- **BREAKING**: Increase supported Node.js version to 6.13.0 for URL support.
- **BREAKING**: Renamed `master` branch to `main`.
- **BREAKING**: Release process updated to use tooling that prefixes versions
  with `v`. Other tools, scripts, or scanners may need to adapt.
- **BREAKING**: Remove docs related to Bower and
  [forge-dist](https://github.com/digitalbazaar/forge-dist). Install using
  [another method](./README.md#installation).

### Added
- OIDs for `surname`, `title`, and `givenName`.

### Fixed
- **BREAKING**: OID 2.5.4.5 name fixed from `serialName` to `serialNumber`.
  Depending on how applications used this id to name association it could cause
  compatibility issues.

## 0.10.0 - 2020-09-01

### Changed
- **BREAKING**: Node.js 4 no longer supported. The code *may* still work, and
  non-invasive patches to keep it working will be considered. However, more
  modern tools no longer support old Node.js versions making testing difficult.

### Removed
- **BREAKING**: Remove `util.getPath`, `util.setPath`, and `util.deletePath`.
  `util.setPath` had a potential prototype pollution security issue when used
  with unsafe inputs. These functions are not used by `forge` itself. They date
  from an early time when `forge` was targeted at providing general helper
  functions. The library direction changed to be more focused on cryptography.
  Many other excellent libraries are more suitable for general utilities. If
  you need a replacement for these functions, consider `get`, `set`, and `unset`
  from [lodash](https://lodash.com/). But also consider the potential similar
  security issues with those APIs.

## 0.9.2 - 2020-09-01

### Changed
- Added `util.setPath` security note to function docs and to README.

### Notes
- **SECURITY**: The `util.setPath` function has the potential to cause
  prototype pollution if used with unsafe input.
  - This function is **not** used internally by `forge`.
  - The rest of the library is unaffected by this issue.
  - **Do not** use unsafe input with this function.
  - Usage with known input should function as expected. (Including input
    intentionally using potentially problematic keys.)
  - No code changes will be made to address this issue in 0.9.x. The current
    behavior *could* be considered a feature rather than a security issue.
    0.10.0 will be released that removes `util.getPath` and `util.setPath`.
    Consider `get` and `set` from [lodash](https://lodash.com/) if you need
    replacements. But also consider the potential similar security issues with
    those APIs.
  - https://snyk.io/vuln/SNYK-JS-NODEFORGE-598677
  - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7720

## 0.9.1 - 2019-09-26

### Fixed
- Ensure DES-CBC given IV is long enough for block size.

## 0.9.0 - 2019-09-04

### Added
- Add ed25519.publicKeyFromAsn1 and ed25519.privateKeyFromAsn1 APIs.
- A few OIDs used in EV certs.

### Fixed
- Improve ed25519 NativeBuffer check.

## 0.8.5 - 2019-06-18

### Fixed
- Remove use of `const`.

## 0.8.4 - 2019-05-22

### Changed
- Replace all instances of Node.js `new Buffer` with `Buffer.from` and `Buffer.alloc`.

## 0.8.3 - 2019-05-15

### Fixed
- Use basic character set for code.

## 0.8.2 - 2019-03-18

### Fixed
- Fix tag calculation when continuing an AES-GCM block.

### Changed
- Switch to eslint.

## 0.8.1 - 2019-02-23

### Fixed
- Fix off-by-1 bug with kem random generation.

## 0.8.0 - 2019-01-31

### Fixed
- Handle creation of certificates with `notBefore` and `notAfter` dates less
  than Jan 1, 1950 or greater than or equal to Jan 1, 2050.

### Added
- Add OID 2.5.4.13 "description".
- Add OID 2.16.840.1.113730.1.13 "nsComment".
  - Also handle extension when creating a certificate.
- `pki.verifyCertificateChain`:
  - Add `validityCheckDate` option to allow checking the certificate validity
    period against an arbitrary `Date` or `null` for no check at all. The
    current date is used by default.
- `tls.createConnection`:
  - Add `verifyOptions` option that passes through to
    `pki.verifyCertificateChain`. Can be used for the above `validityCheckDate`
    option.

### Changed
- Support WebCrypto API in web workers.
- `rsa.generateKeyPair`:
  - Use `crypto.generateKeyPair`/`crypto.generateKeyPairSync` on Node.js if
    available (10.12.0+) and not in pure JS mode.
  - Use JS fallback in `rsa.generateKeyPair` if `prng` option specified since
    this isn't supported by current native APIs.
  - Only run key generation comparison tests if keys will be deterministic.
- PhantomJS is deprecated, now using Headless Chrome with Karma.
- **Note**: Using Headless Chrome vs PhantomJS may cause newer JS features to
  slip into releases without proper support for older runtimes and browsers.
  Please report such issues and they will be addressed.
- `pki.verifyCertificateChain`:
  - Signature changed to `(caStore, chain, options)`. Older `(caStore, chain,
    verify)` signature is still supported. New style is to to pass in a
    `verify` option.

## 0.7.6 - 2018-08-14

### Added
- Test on Node.js 10.x.
- Support for PKCS#7 detached signatures.

### Changed
- Improve webpack/browser detection.

## 0.7.5 - 2018-03-30

### Fixed
- Remove use of `const`.

## 0.7.4 - 2018-03-07

### Fixed
- Potential regex denial of service in form.js.

### Added
- Support for ED25519.
- Support for baseN/base58.

## 0.7.3 - 2018-03-05

- Re-publish with npm 5.6.0 due to file timestamp issues.

## 0.7.2 - 2018-02-27

### Added
- Support verification of SHA-384 certificates.
- `1.2.840.10040.4.3'`/`dsa-with-sha1` OID.

### Fixed
- Support importing PKCS#7 data with no certificates. RFC 2315 sec 9.1 states
  certificates are optional.
- `asn1.equals` loop bug.
- Fortuna implementation bugs.

## 0.7.1 - 2017-03-27

### Fixed

- Fix digestLength for hashes based on SHA-512.

## 0.7.0 - 2017-02-07

### Fixed

- Fix test looping bugs so all tests are run.
- Improved ASN.1 parsing. Many failure cases eliminated. More sanity checks.
  Better behavior in default mode of parsing BIT STRINGs. Better handling of
  parsed BIT STRINGs in `toDer()`. More tests.
- Improve X.509 BIT STRING handling by using new capture modes.

### Changed

- Major refactor to use CommonJS plus a browser build system.
- Updated tests, examples, docs.
- Updated dependencies.
- Updated flash build system.
- Improve OID mapping code.
- Change test servers from Python to JavaScript.
- Improve PhantomJS support.
- Move Bower/bundle support to
  [forge-dist](https://github.com/digitalbazaar/forge-dist).
- **BREAKING**: Require minimal digest algorithm dependencies from individual
  modules.
- Enforce currently supported bit param values for byte buffer access. May be
  **BREAKING** for code that depended on unspecified and/or incorrect behavior.
- Improve `asn1.prettyPrint()` BIT STRING display.

### Added

- webpack bundler support via `npm run build`:
  - Builds `.js`, `.min.js`, and basic sourcemaps.
  - Basic build: `forge.js`.
  - Build with extra utils and networking support: `forge.all.js`.
  - Build WebWorker support: `prime.worker.js`.
- Browserify support in package.json.
- Karma browser testing.
- `forge.options` field.
- `forge.options.usePureJavaScript` flag.
- `forge.util.isNodejs` flag (used to select "native" APIs).
- Run PhantomJS tests in Travis-CI.
- Add "Donations" section to README.
- Add IRC to "Contact" section of README.
- Add "Security Considerations" section to README.
- Add pbkdf2 usePureJavaScript test.
- Add rsa.generateKeyPair async and usePureJavaScript tests.
- Add .editorconfig support.
- Add `md.all.js` which includes all digest algorithms.
- Add asn1 `equals()` and `copy()`.
- Add asn1 `validate()` capture options for BIT STRING contents and value.

### Removed

- **BREAKING**: Can no longer call `forge({...})` to create new instances.
- Remove a large amount of old cruft.

### Migration from 0.6.x to 0.7.x

- (all) If you used the feature to create a new forge instance with new
  configuration options you will need to rework your code. That ability has
  been removed due to implementation complexity. The main rare use was to set
  the option to use pure JavaScript. That is now available as a library global
  flag `forge.options.usePureJavaScript`.
- (npm,bower) If you used the default main file there is little to nothing to
  change.
- (npm) If you accessed a sub-resource like `forge/js/pki` you should either
  switch to just using the main `forge` and access `forge.pki` or update to
  `forge/lib/pki`.
- (bower) If you used a sub-resource like `forge/js/pki` you should switch to
  just using `forge` and access `forge.pki`. The bower release bundles
  everything in one minified file.
- (bower) A configured workerScript like
  `/bower_components/forge/js/prime.worker.js` will need to change to
  `/bower_components/forge/dist/prime.worker.min.js`.
- (all) If you used the networking support or flash socket support, you will
  need to use a custom build and/or adjust where files are loaded from. This
  functionality is not included in the bower distribution by default and is
  also now in a different directory.
- (all) The library should now directly support building custom bundles with
  webpack, browserify, or similar.
- (all) If building a custom bundle ensure the correct dependencies are
  included. In particular, note there is now a `md.all.js` file to include all
  digest algorithms. Individual files limit what they include by default to
  allow smaller custom builds. For instance, `pbdkf2.js` has a `sha1` default
  but does not include any algorithm files by default. This allows the
  possibility to include only `sha256` without the overhead of `sha1` and
  `sha512`.

### Notes

- This major update requires updating the version to 0.7.x. The existing
  work-in-progress "0.7.x" branch will be painfully rebased on top of this new
  0.7.x and moved forward to 0.8.x or later as needed.
- 0.7.x is a start of simplifying forge based on common issues and what has
  appeared to be the most common usage. Please file issues with feedback if the
  changes are problematic for your use cases.

## 0.6.x - 2016 and earlier

- See Git commit log or https://github.com/digitalbazaar/forge.