yefremov · March 7, 2017 02:39 · Mar 7, 2017
diff --git a/uncurryThis.js b/uncurryThis.js
@@ -0,0 +1,24 @@
+
+// How does one write a JavaScript meta-program that can operate reliably on 
+// other objects in its JavaScript context (in a browser – within the same 
+// frame), despite the loading of arbitrary code later into that same frame? 
+// The problem is that the later code may arbitrarily modify, override, or 
+// remove methods on the primordial built-in objects. To make the problem 
+// tractable, we assume that the meta program consists of modules that are 
+// first evaluated before their frame has become corrupted.
+
+function uncurryThis(func) {
+  return function () {
+    return Function.call.apply(func, arguments);
+  }
+}
+
+var slice = uncurryThis(Array.prototype.slice);
+var reduce = uncurryThis(Array.prototype.reduce);
+var map = uncurryThis(Array.prototype.map);
+var filter = uncurryThis(Array.prototype.filter);
+var some = uncurryThis(Array.prototype.some);
+var every = uncurryThis(Array.prototype.every);
+
+console.log(slice(['foo', 'bar', 'baz'], 1, 2));
+// => ["bar"]