Sync modules to vendor/core

We haven't done this recently. Nothing has changed significantly, though
this does remove some files we weren't using.

src/vendor/core/$.js

@@ -21,9 +21,6 @@ var ge = require('ge');
 var ex = require('ex');
 
 /**
- * @param {string|DOMDocument|DOMElement|DOMTextNode} id
- * @return {DOMDocument|DOMElement|DOMTextNode}
- *
  * Find a node by ID.
  *
  * If your application code depends on the existence of the element, use $,
@@ -31,6 +28,9 @@ var ex = require('ex');
  *
  * If you're not sure whether or not the element exists, use ge instead, and
  * manually check for the element's existence in your application code.
+ *
+ * @param {string|DOMDocument|DOMElement|DOMTextNode|Comment} id
+ * @return {DOMDocument|DOMElement|DOMTextNode|Comment}
  */
 function $(id) {
   var element = ge(id);

src/vendor/core/createArrayFrom.js

@@ -17,7 +17,46 @@
  * @typechecks
  */
 
-var hasArrayNature = require('hasArrayNature');
+/**
+ * NOTE: if you are a previous user of this function, it has been considered
+ * unsafe because it's inconsistent across browsers for some inputs.
+ * Instead use `Array.isArray()`.
+ *
+ * Perform a heuristic test to determine if an object is "array-like".
+ *
+ *   A monk asked Joshu, a Zen master, "Has a dog Buddha nature?"
+ *   Joshu replied: "Mu."
+ *
+ * This function determines if its argument has "array nature": it returns
+ * true if the argument is an actual array, an `arguments' object, or an
+ * HTMLCollection (e.g. node.childNodes or node.getElementsByTagName()).
+ *
+ * @param {*} obj
+ * @return {boolean}
+ */
+function hasArrayNature(obj) {
+  return (
+    // not null/false
+    !!obj &&
+    // arrays are objects, NodeLists are functions in Safari
+    (typeof obj == 'object' || typeof obj == 'function') &&
+    // quacks like an array
+    ('length' in obj) &&
+    // not window
+    !('setInterval' in obj) &&
+    // no DOM node should be considered an array-like
+    // a 'select' element has 'length' and 'item' properties on IE8
+    (typeof obj.nodeType != 'number') &&
+    (
+      // a real array
+      Array.isArray(obj) ||
+      // arguments
+      ('callee' in obj) ||
+      // HTMLCollection/NodeList
+      ('item' in obj)
+    )
+  );
+}
 
 /**
  * Ensure that the argument is an array by wrapping it in an array if it is not.

src/vendor/core/createObjectFrom.js

@@ -16,8 +16,6 @@
  * @providesModule createObjectFrom
  */
 
-var hasArrayNature = require('hasArrayNature');
-
 /**
  * Construct an object from an array of keys
  * and optionally specified value or list of values.
@@ -43,19 +41,19 @@ var hasArrayNature = require('hasArrayNature');
  */
 function createObjectFrom(keys, values /* = true */) {
   if (__DEV__) {
-    if (!hasArrayNature(keys)) {
+    if (!Array.isArray(keys)) {
       throw new TypeError('Must pass an array of keys.');
     }
   }
 
   var object = {};
-  var is_array = hasArrayNature(values);
+  var isArray = Array.isArray(values);
   if (typeof values == 'undefined') {
     values = true;
   }
 
   for (var ii = keys.length; ii--;) {
-    object[keys[ii]] = is_array ? values[ii] : values;
+    object[keys[ii]] = isArray ? values[ii] : values;
   }
   return object;
 }

src/vendor/core/hasArrayNature.js

@@ -1,56 +0,0 @@
-/**
- * Copyright 2013 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @providesModule hasArrayNature
- */
-
-/**
- *  Perform a heuristic test to determine if an object is "array-like".
- *
- *    A monk asked Joshu, a Zen master, "Has a dog Buddha nature?"
- *    Joshu replied: "Mu."
- *
- *  This function determines if its argument has "array nature": it returns
- *  true if the argument is an actual array, an `arguments' object, or an
- *  HTMLCollection (e.g. node.childNodes or node.getElementsByTagName()).
- *
- *  @param  obj   An object to test.
- *  @return bool  True if the object is array-like.
- */
-function hasArrayNature(obj) {
-  return (
-    // not null/false
-    !!obj &&
-    // arrays are objects, NodeLists are functions in Safari
-    (typeof obj == 'object' || typeof obj == 'function') &&
-    // quacks like an array
-    ('length' in obj) &&
-    // not window
-    !('setInterval' in obj) &&
-    // no DOM node should be considered an array-like
-    // a 'select' element has 'length' and 'item' properties
-    (typeof obj.nodeType != 'number') &&
-    (
-      // a real array
-      Array.isArray(obj) ||
-      // arguments
-      ('callee' in obj) ||
-      // HTMLCollection/NodeList
-      ('item' in obj)
-    )
-  );
-}
-
-module.exports = hasArrayNature;

src/vendor/core/requestAnimationFrame.js

@@ -1,39 +0,0 @@
-/**
- * Copyright 2013 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @providesModule requestAnimationFrame
- */
-
-var emptyFunction = require('emptyFunction');
-
-var lastTime = 0;
-
-var requestAnimationFrame =
-  global.requestAnimationFrame       ||
-  global.webkitRequestAnimationFrame ||
-  global.mozRequestAnimationFrame    ||
-  global.oRequestAnimationFrame      ||
-  global.msRequestAnimationFrame     ||
-  function(callback) {
-    var currTime = Date.now();
-    var timeDelay = Math.max(0, 16 - (currTime - lastTime));
-    lastTime = currTime + timeDelay;
-    return global.setTimeout(callback, timeDelay);
-  };
-
-// Works around a rare bug in Safari 6 where the first request is never invoked.
-requestAnimationFrame(emptyFunction);
-
-module.exports = requestAnimationFrame;