add some packages

node_modules/private/private.js

@@ -0,0 +1,129 @@
+"use strict";
+
+var originalObject = Object;
+var originalDefProp = Object.defineProperty;
+var originalCreate = Object.create;
+
+function defProp(obj, name, value) {
+  if (originalDefProp) try {
+    originalDefProp.call(originalObject, obj, name, { value: value });
+  } catch (definePropertyIsBrokenInIE8) {
+    obj[name] = value;
+  } else {
+    obj[name] = value;
+  }
+}
+
+// For functions that will be invoked using .call or .apply, we need to
+// define those methods on the function objects themselves, rather than
+// inheriting them from Function.prototype, so that a malicious or clumsy
+// third party cannot interfere with the functionality of this module by
+// redefining Function.prototype.call or .apply.
+function makeSafeToCall(fun) {
+  if (fun) {
+    defProp(fun, "call", fun.call);
+    defProp(fun, "apply", fun.apply);
+  }
+  return fun;
+}
+
+makeSafeToCall(originalDefProp);
+makeSafeToCall(originalCreate);
+
+var hasOwn = makeSafeToCall(Object.prototype.hasOwnProperty);
+var numToStr = makeSafeToCall(Number.prototype.toString);
+var strSlice = makeSafeToCall(String.prototype.slice);
+
+var cloner = function(){};
+function create(prototype) {
+  if (originalCreate) {
+    return originalCreate.call(originalObject, prototype);
+  }
+  cloner.prototype = prototype || null;
+  return new cloner;
+}
+
+var rand = Math.random;
+var uniqueKeys = create(null);
+
+function makeUniqueKey() {
+  // Collisions are highly unlikely, but this module is in the business of
+  // making guarantees rather than safe bets.
+  do var uniqueKey = internString(strSlice.call(numToStr.call(rand(), 36), 2));
+  while (hasOwn.call(uniqueKeys, uniqueKey));
+  return uniqueKeys[uniqueKey] = uniqueKey;
+}
+
+function internString(str) {
+  var obj = {};
+  obj[str] = true;
+  return Object.keys(obj)[0];
+}
+
+// External users might find this function useful, but it is not necessary
+// for the typical use of this module.
+exports.makeUniqueKey = makeUniqueKey;
+
+// Object.getOwnPropertyNames is the only way to enumerate non-enumerable
+// properties, so if we wrap it to ignore our secret keys, there should be
+// no way (except guessing) to access those properties.
+var originalGetOPNs = Object.getOwnPropertyNames;
+Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
+  for (var names = originalGetOPNs(object),
+           src = 0,
+           dst = 0,
+           len = names.length;
+       src < len;
+       ++src) {
+    if (!hasOwn.call(uniqueKeys, names[src])) {
+      if (src > dst) {
+        names[dst] = names[src];
+      }
+      ++dst;
+    }
+  }
+  names.length = dst;
+  return names;
+};
+
+function defaultCreatorFn(object) {
+  return create(null);
+}
+
+function makeAccessor(secretCreatorFn) {
+  var brand = makeUniqueKey();
+  var passkey = create(null);
+
+  secretCreatorFn = secretCreatorFn || defaultCreatorFn;
+
+  function register(object) {
+    var secret; // Created lazily.
+
+    function vault(key, forget) {
+      // Only code that has access to the passkey can retrieve (or forget)
+      // the secret object.
+      if (key === passkey) {
+        return forget
+          ? secret = null
+          : secret || (secret = secretCreatorFn(object));
+      }
+    }
+
+    defProp(object, brand, vault);
+  }
+
+  function accessor(object) {
+    if (!hasOwn.call(object, brand))
+      register(object);
+    return object[brand](passkey);
+  }
+
+  accessor.forget = function(object) {
+    if (hasOwn.call(object, brand))
+      object[brand](passkey, true);
+  };
+
+  return accessor;
+}
+
+exports.makeAccessor = makeAccessor;