move ES6 polyfills into lang

src/WebComponents/build-lite.json

@@ -5,7 +5,11 @@
   "../MutationObserver/MutationObserver.js",
   "../Template/Template.js",
   "../HTMLImports/build.json",
-  "../CustomElements/build.json",
+  "Promise.js",
+  "../../custom-elements/custom-elements.min.js",
+  "../../shadydom/shadydom.min.js",
+  "../../shadycss/shadycss.min.js",
+  "lang.js",
   "dom.js",
   "unresolved.js"
 ]

src/WebComponents/dom.js

@@ -128,31 +128,4 @@
     window.MouseEvent.prototype = origMouseEvent.prototype;
   }
 
-  if (!Array.from) {
-    Array.from = function (object) {
-      return [].slice.call(object);
-    };
-  }
-
-  if (!Object.assign) {
-    function assign(target, source) {
-      var n$ = Object.getOwnPropertyNames(source);
-      for (var i=0, p; i < n$.length; i++) {
-        p = n$[i];
-        target[p] = source[p];
-      }
-    }
-
-    Object.assign = function(target, sources) {
-      var args = [].slice.call(arguments, 1);
-      for (var i=0, s; i < args.length; i++) {
-        s = args[i];
-        if (s) {
-          assign(target, s);
-        }
-      }
-      return target;
-    }
-  }
-
 })(window.WebComponents);

src/WebComponents/lang.js

@@ -10,18 +10,47 @@
 
 (function(scope) {
 
-// Old versions of iOS do not have bind.
+  'use strict';
 
-if (!Function.prototype.bind) {
-  Function.prototype.bind = function(scope) {
-    var self = this;
-    var args = Array.prototype.slice.call(arguments, 1);
-    return function() {
-      var args2 = args.slice();
-      args2.push.apply(args2, arguments);
-      return self.apply(scope, args2);
+  // Old versions of iOS do not have bind.
+  if (!Function.prototype.bind) {
+    Function.prototype.bind = function(scope) {
+      var self = this;
+      var args = Array.prototype.slice.call(arguments, 1);
+      return function() {
+        var args2 = args.slice();
+        args2.push.apply(args2, arguments);
+        return self.apply(scope, args2);
+      };
     };
-  };
-}
+  }
+
+  // ES6 stuff
+  if (!Array.from) {
+    Array.from = function (object) {
+      return [].slice.call(object);
+    };
+  }
+
+  if (!Object.assign) {
+    function assign(target, source) {
+      var n$ = Object.getOwnPropertyNames(source);
+      for (var i=0, p; i < n$.length; i++) {
+        p = n$[i];
+        target[p] = source[p];
+      }
+    }
+
+    Object.assign = function(target, sources) {
+      var args = [].slice.call(arguments, 1);
+      for (var i=0, s; i < args.length; i++) {
+        s = args[i];
+        if (s) {
+          assign(target, s);
+        }
+      }
+      return target;
+    }
+  }
 
 })(window.WebComponents);

webcomponents-lite.js

@@ -61,6 +61,7 @@
     '../../shadycss/shadycss.min.js',
     'WebComponents/post-polyfill.js',
     // these scripts are loaded here due to polyfill timing issues
+    'WebComponents/lang.js',
     'WebComponents/dom.js',
     'WebComponents/unresolved.js'
   ];