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-rw-r--r--ext/mixed/js/extension.js53
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diff --git a/ext/mixed/js/extension.js b/ext/mixed/js/extension.js
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+++ b/ext/mixed/js/extension.js
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+/*
+ * Copyright (C) 2019 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+function toIterable(value) {
+ if (typeof Symbol !== 'undefined' && typeof value[Symbol.iterator] !== 'undefined') {
+ return value;
+ }
+
+ const array = JSON.parse(JSON.stringify(value));
+ return Array.isArray(array) ? array : [];
+}
+
+function extensionHasChrome() {
+ try {
+ return typeof chrome === 'object' && chrome !== null;
+ } catch (e) {
+ return false;
+ }
+}
+
+function extensionHasBrowser() {
+ try {
+ return typeof browser === 'object' && browser !== null;
+ } catch (e) {
+ return false;
+ }
+}
+
+const EXTENSION_IS_BROWSER_EDGE = (
+ extensionHasBrowser() &&
+ (!extensionHasChrome() || (typeof chrome.runtime === 'undefined' && typeof browser.runtime !== 'undefined'))
+);
+
+if (EXTENSION_IS_BROWSER_EDGE) {
+ // Edge does not have chrome defined.
+ chrome = browser;
+}