summaryrefslogtreecommitdiffstats
path: root/browser/extensions/webcompat/shims/fastclick.js
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--browser/extensions/webcompat/shims/fastclick.js75
1 files changed, 75 insertions, 0 deletions
diff --git a/browser/extensions/webcompat/shims/fastclick.js b/browser/extensions/webcompat/shims/fastclick.js
new file mode 100644
index 0000000000..ad6814c995
--- /dev/null
+++ b/browser/extensions/webcompat/shims/fastclick.js
@@ -0,0 +1,75 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1738220 - Shim Conversant FastClick
+ *
+ * Sites assuming FastClick will load can break if it is blocked.
+ * This shim mitigates that breakage.
+ */
+
+// FastClick bundles nodeJS packages/core-js/internals/dom-iterables.js
+// which is known to be needed by at least one site.
+if (!HTMLCollection.prototype.forEach) {
+ const DOMIterables = [
+ "CSSRuleList",
+ "CSSStyleDeclaration",
+ "CSSValueList",
+ "ClientRectList",
+ "DOMRectList",
+ "DOMStringList",
+ "DOMTokenList",
+ "DataTransferItemList",
+ "FileList",
+ "HTMLAllCollection",
+ "HTMLCollection",
+ "HTMLFormElement",
+ "HTMLSelectElement",
+ "MediaList",
+ "MimeTypeArray",
+ "NamedNodeMap",
+ "NodeList",
+ "PaintRequestList",
+ "Plugin",
+ "PluginArray",
+ "SVGLengthList",
+ "SVGNumberList",
+ "SVGPathSegList",
+ "SVGPointList",
+ "SVGStringList",
+ "SVGTransformList",
+ "SourceBufferList",
+ "StyleSheetList",
+ "TextTrackCueList",
+ "TextTrackList",
+ "TouchList",
+ ];
+
+ const forEach = Array.prototype.forEach;
+
+ const handlePrototype = proto => {
+ if (!proto || proto.forEach === forEach) {
+ return;
+ }
+ try {
+ Object.defineProperty(proto, "forEach", {
+ enumerable: false,
+ get: () => forEach,
+ });
+ } catch (_) {
+ proto.forEach = forEach;
+ }
+ };
+
+ for (const name of DOMIterables) {
+ handlePrototype(window[name]?.prototype);
+ }
+}
+
+if (!window.conversant?.launch) {
+ const c = (window.conversant = window.conversant || {});
+ c.launch = () => {};
+}