adding a compatibility.js as a single source to define all fallback function declarations

1 files changed, 25 insertions, 0 deletions

diff --git a/core/js/compatibility.js b/core/js/compatibility.js
new file mode 100644
index 00000000000..3e9178f3200
--- /dev/null
+++ b/core/js/compatibility.js
@@ -0,0 +1,25 @@
+
+//https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function/bind
+if (!Function.prototype.bind) {
+	Function.prototype.bind = function (oThis) {
+		if (typeof this !== "function") {
+			// closest thing possible to the ECMAScript 5 internal IsCallable function
+			throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
+		}
+
+		var aArgs = Array.prototype.slice.call(arguments, 1),
+			fToBind = this,
+			fNOP = function () {},
+			fBound = function () {
+				return fToBind.apply(this instanceof fNOP && oThis
+					? this
+					: oThis,
+					aArgs.concat(Array.prototype.slice.call(arguments)));
+			};
+
+		fNOP.prototype = this.prototype;
+		fBound.prototype = new fNOP();
+
+		return fBound;
+	};
+}