https://github.com/jonnyreeves/fetch-readablestream/blob/master/README.md
このスクリプトは単体で利用できません。右のようなメタデータを含むスクリプトから、ライブラリとして読み込まれます: // @require https://update.greasyfork.org/scripts/29306/191832/fetch-readablestream.js
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.fetchStream = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = defaultTransportFactory;
var _fetch = require('./fetch');
var _fetch2 = _interopRequireDefault(_fetch);
var _xhr = require('./xhr');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
// selected is used to cache the detected transport.
var selected = null;
// defaultTransportFactory selects the most appropriate transport based on the
// capabilities of the current environment.
function defaultTransportFactory() {
if (!selected) {
selected = detectTransport();
}
return selected;
}
function detectTransport() {
if (typeof Response !== 'undefined' && Response.prototype.hasOwnProperty("body")) {
// fetch with ReadableStream support.
return _fetch2.default;
}
var mozChunked = 'moz-chunked-arraybuffer';
if (supportsXhrResponseType(mozChunked)) {
// Firefox, ArrayBuffer support.
return (0, _xhr.makeXhrTransport)({
responseType: mozChunked,
responseParserFactory: function responseParserFactory() {
return function (response) {
return new Uint8Array(response);
};
}
});
}
// Bog-standard, expensive, text concatenation with byte encoding :(
return (0, _xhr.makeXhrTransport)({
responseType: 'text',
responseParserFactory: function responseParserFactory() {
var encoder = new TextEncoder();
var offset = 0;
return function (response) {
var chunk = response.substr(offset);
offset = response.length;
return encoder.encode(chunk, { stream: true });
};
}
});
}
function supportsXhrResponseType(type) {
try {
var tmpXhr = new XMLHttpRequest();
tmpXhr.responseType = type;
return tmpXhr.responseType === type;
} catch (e) {/* IE throws on setting responseType to an unsupported value */}
return false;
}
},{"./fetch":3,"./xhr":6}],2:[function(require,module,exports){
module.exports = require("./index").default;
},{"./index":4}],3:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = fetchRequest;
// thin wrapper around `fetch()` to ensure we only expose the properties provided by
// the XHR polyfil; / fetch-readablestream Response API.
function fetchRequest(url, options) {
return fetch(url, options).then(function (r) {
return {
body: r.body,
headers: r.headers,
ok: r.ok,
status: r.status,
statusText: r.statusText,
url: r.url
};
});
}
},{}],4:[function(require,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = fetchStream;
var _defaultTransportFactory = require('./defaultTransportFactory');
var _defaultTransportFactory2 = _interopRequireDefault(_defaultTransportFactory);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function fetchStream(url) {
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
var transport = options.transport;
if (!transport) {
transport = fetchStream.transportFactory();
}
return transport(url, options);
}
// override this function to delegate to an alternative transport function selection
// strategy; useful when testing.
fetchStream.transportFactory = _defaultTransportFactory2.default;
},{"./defaultTransportFactory":1}],5:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
// Headers is a partial polyfill for the HTML5 Headers class.
var Headers = exports.Headers = function () {
function Headers() {
var _this = this;
var h = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, Headers);
this.h = {};
if (h instanceof Headers) {
h.forEach(function (value, key) {
return _this.append(key, value);
});
}
Object.getOwnPropertyNames(h).forEach(function (key) {
return _this.append(key, h[key]);
});
}
_createClass(Headers, [{
key: "append",
value: function append(key, value) {
key = key.toLowerCase();
if (!Array.isArray(this.h[key])) {
this.h[key] = [];
}
this.h[key].push(value);
}
}, {
key: "set",
value: function set(key, value) {
this.h[key.toLowerCase()] = [value];
}
}, {
key: "has",
value: function has(key) {
return Array.isArray(this.h[key.toLowerCase()]);
}
}, {
key: "get",
value: function get(key) {
key = key.toLowerCase();
if (Array.isArray(this.h[key])) {
return this.h[key][0];
}
}
}, {
key: "getAll",
value: function getAll(key) {
return this.h[key.toLowerCase()].concat();
}
}, {
key: "entries",
value: function entries() {
var items = [];
this.forEach(function (value, key) {
items.push([key, value]);
});
return makeIterator(items);
}
// forEach is not part of the official spec.
}, {
key: "forEach",
value: function forEach(callback, thisArg) {
var _this2 = this;
Object.getOwnPropertyNames(this.h).forEach(function (key) {
_this2.h[key].forEach(function (value) {
return callback.call(thisArg, value, key, _this2);
});
}, this);
}
}]);
return Headers;
}();
function makeIterator(items) {
return _defineProperty({
next: function next() {
var value = items.shift();
return {
done: value === undefined,
value: value
};
}
}, Symbol.iterator, function () {
return this;
});
}
},{}],6:[function(require,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.makeXhrTransport = makeXhrTransport;
exports.parseResposneHeaders = parseResposneHeaders;
var _Headers = require('./polyfill/Headers');
var _original = require('original');
var _original2 = _interopRequireDefault(_original);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function makeXhrTransport(_ref) {
var responseType = _ref.responseType,
responseParserFactory = _ref.responseParserFactory;
return function xhrTransport(url, options) {
var xhr = new XMLHttpRequest();
var responseParser = responseParserFactory();
var responseStreamController = void 0;
var cancelled = false;
var responseStream = new ReadableStream({
start: function start(c) {
responseStreamController = c;
},
cancel: function cancel() {
cancelled = true;
xhr.abort();
}
});
var _options$method = options.method,
method = _options$method === undefined ? 'GET' : _options$method;
xhr.open(method, url);
xhr.responseType = responseType;
xhr.withCredentials = options.credentials === 'include' || options.credentials === 'same-origin' && _original2.default.same(url, location.origin);
if (options.headers) {
var _iteratorNormalCompletion = true;
var _didIteratorError = false;
var _iteratorError = undefined;
try {
for (var _iterator = options.headers.entries()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
var pair = _step.value;
xhr.setRequestHeader(pair[0], pair[1]);
}
} catch (err) {
_didIteratorError = true;
_iteratorError = err;
} finally {
try {
if (!_iteratorNormalCompletion && _iterator.return) {
_iterator.return();
}
} finally {
if (_didIteratorError) {
throw _iteratorError;
}
}
}
}
return new Promise(function (resolve, reject) {
if (options.body && (method === 'GET' || method === 'HEAD')) {
reject(new TypeError("Failed to execute 'fetchStream' on 'Window': Request with GET/HEAD method cannot have body"));
}
xhr.onreadystatechange = function () {
if (xhr.readyState === xhr.HEADERS_RECEIVED) {
return resolve({
body: responseStream,
headers: parseResposneHeaders(xhr.getAllResponseHeaders()),
ok: xhr.status >= 200 && xhr.status < 300,
status: xhr.status,
statusText: xhr.statusText,
url: makeResponseUrl(xhr.responseURL, url)
});
}
};
xhr.onerror = function () {
return reject(new TypeError('Network request failed'));
};
xhr.ontimeout = function () {
reject(new TypeError('Network request failed'));
};
xhr.onprogress = function () {
if (!cancelled) {
var bytes = responseParser(xhr.response);
responseStreamController.enqueue(bytes);
}
};
xhr.onload = function () {
responseStreamController.close();
};
xhr.send(options.body);
});
};
}
function makeHeaders() {
// Prefer the native method if provided by the browser.
if (typeof Headers !== 'undefined') {
return new Headers();
}
return new _Headers.Headers();
}
function makeResponseUrl(responseUrl, requestUrl) {
if (!responseUrl) {
// best guess; note this will not correctly handle redirects.
if (requestUrl.substring(0, 4) !== "http") {
return location.origin + requestUrl;
}
return requestUrl;
}
return responseUrl;
}
function parseResposneHeaders(str) {
var hdrs = makeHeaders();
if (str) {
var pairs = str.split('\r\n');
for (var i = 0; i < pairs.length; i++) {
var p = pairs[i];
var index = p.indexOf(': ');
if (index > 0) {
var key = p.substring(0, index);
var value = p.substring(index + 2);
hdrs.append(key, value);
}
}
}
return hdrs;
}
},{"./polyfill/Headers":5,"original":7}],7:[function(require,module,exports){
'use strict';
var parse = require('url-parse');
/**
* Transform an URL to a valid origin value.
*
* @param {String|Object} url URL to transform to it's origin.
* @returns {String} The origin.
* @api public
*/
function origin(url) {
if ('string' === typeof url) url = parse(url);
//
// 6.2. ASCII Serialization of an Origin
// http://tools.ietf.org/html/rfc6454#section-6.2
//
if (!url.protocol || !url.hostname) return 'null';
//
// 4. Origin of a URI
// http://tools.ietf.org/html/rfc6454#section-4
//
// States that url.scheme, host should be converted to lower case. This also
// makes it easier to match origins as everything is just lower case.
//
return (url.protocol +'//'+ url.host).toLowerCase();
}
/**
* Check if the origins are the same.
*
* @param {String} a URL or origin of a.
* @param {String} b URL or origin of b.
* @returns {Boolean}
* @api public
*/
origin.same = function same(a, b) {
return origin(a) === origin(b);
};
//
// Expose the origin
//
module.exports = origin;
},{"url-parse":10}],8:[function(require,module,exports){
'use strict';
var has = Object.prototype.hasOwnProperty;
/**
* Simple query string parser.
*
* @param {String} query The query string that needs to be parsed.
* @returns {Object}
* @api public
*/
function querystring(query) {
var parser = /([^=?&]+)=?([^&]*)/g
, result = {}
, part;
//
// Little nifty parsing hack, leverage the fact that RegExp.exec increments
// the lastIndex property so we can continue executing this loop until we've
// parsed all results.
//
for (;
part = parser.exec(query);
result[decodeURIComponent(part[1])] = decodeURIComponent(part[2])
);
return result;
}
/**
* Transform a query string to an object.
*
* @param {Object} obj Object that should be transformed.
* @param {String} prefix Optional prefix.
* @returns {String}
* @api public
*/
function querystringify(obj, prefix) {
prefix = prefix || '';
var pairs = [];
//
// Optionally prefix with a '?' if needed
//
if ('string' !== typeof prefix) prefix = '?';
for (var key in obj) {
if (has.call(obj, key)) {
pairs.push(encodeURIComponent(key) +'='+ encodeURIComponent(obj[key]));
}
}
return pairs.length ? prefix + pairs.join('&') : '';
}
//
// Expose the module.
//
exports.stringify = querystringify;
exports.parse = querystring;
},{}],9:[function(require,module,exports){
'use strict';
/**
* Check if we're required to add a port number.
*
* @see https://url.spec.whatwg.org/#default-port
* @param {Number|String} port Port number we need to check
* @param {String} protocol Protocol we need to check against.
* @returns {Boolean} Is it a default port for the given protocol
* @api private
*/
module.exports = function required(port, protocol) {
protocol = protocol.split(':')[0];
port = +port;
if (!port) return false;
switch (protocol) {
case 'http':
case 'ws':
return port !== 80;
case 'https':
case 'wss':
return port !== 443;
case 'ftp':
return port !== 21;
case 'gopher':
return port !== 70;
case 'file':
return false;
}
return port !== 0;
};
},{}],10:[function(require,module,exports){
'use strict';
var required = require('requires-port')
, lolcation = require('./lolcation')
, qs = require('querystringify')
, relativere = /^\/(?!\/)/;
/**
* These are the parse instructions for the URL parsers, it informs the parser
* about:
*
* 0. The char it Needs to parse, if it's a string it should be done using
* indexOf, RegExp using exec and NaN means set as current value.
* 1. The property we should set when parsing this value.
* 2. Indication if it's backwards or forward parsing, when set as number it's
* the value of extra chars that should be split off.
* 3. Inherit from location if non existing in the parser.
* 4. `toLowerCase` the resulting value.
*/
var instructions = [
['#', 'hash'], // Extract from the back.
['?', 'query'], // Extract from the back.
['//', 'protocol', 2, 1, 1], // Extract from the front.
['/', 'pathname'], // Extract from the back.
['@', 'auth', 1], // Extract from the front.
[NaN, 'host', undefined, 1, 1], // Set left over value.
[/\:(\d+)$/, 'port'], // RegExp the back.
[NaN, 'hostname', undefined, 1, 1] // Set left over.
];
/**
* The actual URL instance. Instead of returning an object we've opted-in to
* create an actual constructor as it's much more memory efficient and
* faster and it pleases my CDO.
*
* @constructor
* @param {String} address URL we want to parse.
* @param {Boolean|function} parser Parser for the query string.
* @param {Object} location Location defaults for relative paths.
* @api public
*/
function URL(address, location, parser) {
if (!(this instanceof URL)) {
return new URL(address, location, parser);
}
var relative = relativere.test(address)
, parse, instruction, index, key
, type = typeof location
, url = this
, i = 0;
//
// The following if statements allows this module two have compatibility with
// 2 different API:
//
// 1. Node.js's `url.parse` api which accepts a URL, boolean as arguments
// where the boolean indicates that the query string should also be parsed.
//
// 2. The `URL` interface of the browser which accepts a URL, object as
// arguments. The supplied object will be used as default values / fall-back
// for relative paths.
//
if ('object' !== type && 'string' !== type) {
parser = location;
location = null;
}
if (parser && 'function' !== typeof parser) {
parser = qs.parse;
}
location = lolcation(location);
for (; i < instructions.length; i++) {
instruction = instructions[i];
parse = instruction[0];
key = instruction[1];
if (parse !== parse) {
url[key] = address;
} else if ('string' === typeof parse) {
if (~(index = address.indexOf(parse))) {
if ('number' === typeof instruction[2]) {
url[key] = address.slice(0, index);
address = address.slice(index + instruction[2]);
} else {
url[key] = address.slice(index);
address = address.slice(0, index);
}
}
} else if (index = parse.exec(address)) {
url[key] = index[1];
address = address.slice(0, address.length - index[0].length);
}
url[key] = url[key] || (instruction[3] || ('port' === key && relative) ? location[key] || '' : '');
//
// Hostname, host and protocol should be lowercased so they can be used to
// create a proper `origin`.
//
if (instruction[4]) {
url[key] = url[key].toLowerCase();
}
}
//
// Also parse the supplied query string in to an object. If we're supplied
// with a custom parser as function use that instead of the default build-in
// parser.
//
if (parser) url.query = parser(url.query);
//
// We should not add port numbers if they are already the default port number
// for a given protocol. As the host also contains the port number we're going
// override it with the hostname which contains no port number.
//
if (!required(url.port, url.protocol)) {
url.host = url.hostname;
url.port = '';
}
//
// Parse down the `auth` for the username and password.
//
url.username = url.password = '';
if (url.auth) {
instruction = url.auth.split(':');
url.username = instruction[0] || '';
url.password = instruction[1] || '';
}
//
// The href is just the compiled result.
//
url.href = url.toString();
}
/**
* This is convenience method for changing properties in the URL instance to
* insure that they all propagate correctly.
*
* @param {String} prop Property we need to adjust.
* @param {Mixed} value The newly assigned value.
* @returns {URL}
* @api public
*/
URL.prototype.set = function set(part, value, fn) {
var url = this;
if ('query' === part) {
if ('string' === typeof value && value.length) {
value = (fn || qs.parse)(value);
}
url[part] = value;
} else if ('port' === part) {
url[part] = value;
if (!required(value, url.protocol)) {
url.host = url.hostname;
url[part] = '';
} else if (value) {
url.host = url.hostname +':'+ value;
}
} else if ('hostname' === part) {
url[part] = value;
if (url.port) value += ':'+ url.port;
url.host = value;
} else if ('host' === part) {
url[part] = value;
if (/\:\d+/.test(value)) {
value = value.split(':');
url.hostname = value[0];
url.port = value[1];
}
} else {
url[part] = value;
}
url.href = url.toString();
return url;
};
/**
* Transform the properties back in to a valid and full URL string.
*
* @param {Function} stringify Optional query stringify function.
* @returns {String}
* @api public
*/
URL.prototype.toString = function toString(stringify) {
if (!stringify || 'function' !== typeof stringify) stringify = qs.stringify;
var query
, url = this
, result = url.protocol +'//';
if (url.username) {
result += url.username;
if (url.password) result += ':'+ url.password;
result += '@';
}
result += url.hostname;
if (url.port) result += ':'+ url.port;
result += url.pathname;
query = 'object' === typeof url.query ? stringify(url.query) : url.query;
if (query) result += '?' !== query.charAt(0) ? '?'+ query : query;
if (url.hash) result += url.hash;
return result;
};
//
// Expose the URL parser and some additional properties that might be useful for
// others.
//
URL.qs = qs;
URL.location = lolcation;
module.exports = URL;
},{"./lolcation":11,"querystringify":8,"requires-port":9}],11:[function(require,module,exports){
(function (global){
'use strict';
/**
* These properties should not be copied or inherited from. This is only needed
* for all non blob URL's as the a blob URL does not include a hash, only the
* origin.
*
* @type {Object}
* @private
*/
var ignore = { hash: 1, query: 1 }
, URL;
/**
* The location object differs when your code is loaded through a normal page,
* Worker or through a worker using a blob. And with the blobble begins the
* trouble as the location object will contain the URL of the blob, not the
* location of the page where our code is loaded in. The actual origin is
* encoded in the `pathname` so we can thankfully generate a good "default"
* location from it so we can generate proper relative URL's again.
*
* @param {Object} loc Optional default location object.
* @returns {Object} lolcation object.
* @api public
*/
module.exports = function lolcation(loc) {
loc = loc || global.location || {};
URL = URL || require('./');
var finaldestination = {}
, type = typeof loc
, key;
if ('blob:' === loc.protocol) {
finaldestination = new URL(unescape(loc.pathname), {});
} else if ('string' === type) {
finaldestination = new URL(loc, {});
for (key in ignore) delete finaldestination[key];
} else if ('object' === type) for (key in loc) {
if (key in ignore) continue;
finaldestination[key] = loc[key];
}
return finaldestination;
};
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./":10}]},{},[2])(2)
});