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Issue 29367316: Issue 4722 - Drop support for Chrome 41 - 48 (Closed)
Patch Set: Removed getIndistinguishableTypes function Created Dec. 16, 2016, 9:37 a.m.
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1 /*
2 * This file is part of Adblock Plus <https://adblockplus.org/>,
3 * Copyright (C) 2006-2016 Eyeo GmbH
4 *
5 * Adblock Plus is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 3 as
7 * published by the Free Software Foundation.
8 *
9 * Adblock Plus is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 (function(global)
19 {
20 "use strict";
21
22 function Response(xhr)
23 {
24 this._xhr = xhr;
25 }
26 Response.prototype = {
27 get ok()
28 {
29 return this._xhr.status >= 200 && this._xhr.status <= 299;
30 },
31 text: function()
32 {
33 return Promise.resolve(this._xhr.responseText);
34 }
35 };
36
37 function fetch(url)
38 {
39 return new Promise(function(resolve, reject)
40 {
41 var xhr = new XMLHttpRequest();
42
43 xhr.onload = function()
44 {
45 resolve(new Response(xhr));
46 };
47
48 xhr.onerror = xhr.onabort = function()
49 {
50 reject(new TypeError("Failed to fetch"));
51 };
52
53 xhr.overrideMimeType("text/plain");
54 xhr.open("GET", url);
55 xhr.send();
56 });
57 }
58
59 // While the Fetch API is natively supported since Chrome 42, before
60 // Chrome 47 it failed to fetch files from within the extension bundle.
61 // https://code.google.com/p/chromium/issues/detail?id=466876
62 var builtinFetch = global.fetch;
63 if (builtinFetch)
64 global.fetch = function(url, init)
65 {
66 return builtinFetch(url, init).catch(function(reason)
67 {
68 if (new URL(url, document.URL).protocol == "chrome-extension:")
69 return fetch(url);
70 throw reason;
71 });
72 };
73 else
74 global.fetch = fetch;
75 })(this);
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