initial

2019-11-28 20:40:02 +00:00
commit 1c78566f5b
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@@ -0,0 +1,3 @@
+*.sw*
+node_modules/
+coverage/
@@ -0,0 +1,8 @@
+language: node_js
+node_js:
+  - "0.10"
+  - "0.12"
+  - "4"
+  - "5"
+services:
+  - mongodb
@@ -0,0 +1,302 @@
+2.3.3 / 2017-11-19
+==================
+ * fixed; catch sync errors in cursor.toArray() re: Automattic/mongoose#5812
+
+2.3.2 / 2017-09-27
+==================
+ * fixed; bumped debug -> 2.6.9 re: #89
+
+2.3.1 / 2017-05-22
+==================
+ * fixed; bumped debug -> 2.6.7 re: #86
+
+2.3.0 / 2017-03-05
+==================
+ * added; replaceOne function
+ * added; deleteOne and deleteMany functions
+
+2.2.3 / 2017-01-31
+==================
+ * fixed; throw correct error when passing incorrectly formatted array to sort()
+
+2.2.2 / 2017-01-31
+==================
+ * fixed; allow passing maps to sort()
+
+2.2.1 / 2017-01-29
+==================
+ * fixed; allow passing string to hint()
+
+2.2.0 / 2017-01-08
+==================
+ * added; updateOne and updateMany functions
+
+2.1.0 / 2016-12-22
+==================
+ * added; ability to pass an array to select() #81 [dciccale](https://github.com/dciccale)
+
+2.0.0 / 2016-09-25
+==================
+ * added; support for mongodb driver 2.0 streams
+
+1.12.0 / 2016-09-25
+===================
+ * added; `retainKeyOrder` option re: Automattic/mongoose#4542
+
+1.11.0 / 2016-06-04
+===================
+ * added; `.minDistance()` helper and minDistance for `.near()` Automattic/mongoose#4179
+
+1.10.1 / 2016-04-26
+===================
+ * fixed; ensure conditions is an object before assigning #75
+
+1.10.0 / 2016-03-16
+==================
+
+ * updated; bluebird to latest 2.10.2 version #74 [matskiv](https://github.com/matskiv)
+
+1.9.0 / 2016-03-15
+==================
+ * added; `.eq` as a shortcut for `.equals` #72 [Fonger](https://github.com/Fonger)
+ * added; ability to use array syntax for sort re: https://jira.mongodb.org/browse/NODE-578 #67
+
+1.8.0 / 2016-03-01
+==================
+ * fixed; dont throw an error if count used with sort or select Automattic/mongoose#3914
+
+1.7.0 / 2016-02-23
+==================
+ * fixed; don't treat objects with a length property as argument objects #70
+ * added; `.findCursor()` method #69 [nswbmw](https://github.com/nswbmw)
+ * added; `_compiledUpdate` property #68 [nswbmw](https://github.com/nswbmw)
+
+1.6.2 / 2015-07-12
+==================
+
+ * fixed; support exec cb being called synchronously #66
+
+1.6.1 / 2015-06-16
+==================
+
+ * fixed; do not treat $meta projection as inclusive [vkarpov15](https://github.com/vkarpov15)
+
+1.6.0 / 2015-05-27
+==================
+
+ * update dependencies #65 [bachp](https://github.com/bachp)
+
+1.5.0 / 2015-03-31
+==================
+
+ * fixed; debug output
+ * fixed; allow hint usage with count #61 [trueinsider](https://github.com/trueinsider)
+
+1.4.0 / 2015-03-29
+==================
+
+ * added; object support to slice() #60 [vkarpov15](https://github.com/vkarpov15)
+ * debug; improved output #57 [flyvictor](https://github.com/flyvictor)
+
+1.3.0 / 2014-11-06
+==================
+
+ * added; setTraceFunction() #53 from [jlai](https://github.com/jlai)
+
+1.2.1 / 2014-09-26
+==================
+
+ * fixed; distinct assignment in toConstructor() #51 from [esco](https://github.com/esco)
+
+1.2.0 / 2014-09-18
+==================
+
+ * added; stream() support for find()
+
+1.1.0 / 2014-09-15
+==================
+
+ * add #then for co / koa support
+ * start checking code coverage
+
+1.0.0 / 2014-07-07
+==================
+
+ * Remove broken require() calls until they're actually implemented #48 [vkarpov15](https://github.com/vkarpov15)
+
+0.9.0 / 2014-05-22
+==================
+
+ * added; thunk() support
+ * release 0.8.0
+
+0.8.0 / 2014-05-15
+==================
+
+ * added; support for maxTimeMS #44 [yoitsro](https://github.com/yoitsro)
+ * updated; devDependency (driver to 1.4.4)
+
+0.7.0 / 2014-05-02
+==================
+
+ * fixed; pass $maxDistance in $near object as described in docs #43 [vkarpov15](https://github.com/vkarpov15)
+ * fixed; cloning buffers #42 [gjohnson](https://github.com/gjohnson)
+ * tests; a little bit more `mongodb` agnostic #34 [refack](https://github.com/refack)
+
+0.6.0 / 2014-04-01
+==================
+
+ * fixed; Allow $meta args in sort() so text search sorting works #37 [vkarpov15](https://github.com/vkarpov15)
+
+0.5.3 / 2014-02-22
+==================
+
+ * fixed; cloning mongodb.Binary
+
+0.5.2 / 2014-01-30
+==================
+
+ * fixed; cloning ObjectId constructors
+ * fixed; cloning of ReadPreferences #30 [ashtuchkin](https://github.com/ashtuchkin)
+ * tests; use specific mongodb version #29 [AvianFlu](https://github.com/AvianFlu)
+ * tests; remove dependency on ObjectId #28 [refack](https://github.com/refack)
+ * tests; add failing ReadPref test
+
+0.5.1 / 2014-01-17
+==================
+
+ * added; deprecation notice to tags parameter #27 [ashtuchkin](https://github.com/ashtuchkin)
+ * readme; add links
+
+0.5.0 / 2014-01-16
+==================
+
+ * removed; mongodb driver dependency #26 [ashtuchkin](https://github.com/ashtuchkin)
+ * removed; first class support of read preference tags #26 (still supported though) [ashtuchkin](https://github.com/ashtuchkin)
+ * added; better ObjectId clone support
+ * fixed; cloning objects that have no constructor #21
+ * docs; cleaned up [ashtuchkin](https://github.com/ashtuchkin)
+
+0.4.2 / 2014-01-08
+==================
+
+ * updated; debug module 0.7.4 [refack](https://github.com/refack)
+
+0.4.1 / 2014-01-07
+==================
+
+ * fixed; inclusive/exclusive logic
+
+0.4.0 / 2014-01-06
+==================
+
+ * added; selected()
+ * added; selectedInclusively()
+ * added; selectedExclusively()
+
+0.3.3 / 2013-11-14
+==================
+
+ * Fix Mongo DB Dependency #20 [rschmukler](https://github.com/rschmukler)
+
+0.3.2 / 2013-09-06
+==================
+
+  * added; geometry support for near()
+
+0.3.1 / 2013-08-22
+==================
+
+  * fixed; update retains key order #19
+
+0.3.0 / 2013-08-22
+==================
+
+  * less hardcoded isNode env detection #18 [vshulyak](https://github.com/vshulyak)
+  * added; validation of findAndModify varients
+  * clone update doc before execution
+  * stricter env checks
+
+0.2.7 / 2013-08-2
+==================
+
+  * Now support GeoJSON point values for Query#near
+
+0.2.6 / 2013-07-30
+==================
+
+  * internally, 'asc' and 'desc' for sorts are now converted into 1 and -1, respectively
+
+0.2.5 / 2013-07-30
+==================
+
+  * updated docs
+  * changed internal representation of `sort` to use objects instead of arrays
+
+0.2.4 / 2013-07-25
+==================
+
+  * updated; sliced to 0.0.5
+
+0.2.3 / 2013-07-09
+==================
+
+  * now using a callback in collection.find instead of directly calling toArray() on the cursor [ebensing](https://github.com/ebensing)
+
+0.2.2 / 2013-07-09
+==================
+
+  * now exposing mongodb export to allow for better testing [ebensing](https://github.com/ebensing)
+
+0.2.1 / 2013-07-08
+==================
+
+  * select no longer accepts arrays as parameters [ebensing](https://github.com/ebensing)
+
+0.2.0 / 2013-07-05
+==================
+
+  * use $geoWithin by default
+
+0.1.2 / 2013-07-02
+==================
+
+  * added use$geoWithin flag [ebensing](https://github.com/ebensing)
+  * fix read preferences typo [ebensing](https://github.com/ebensing)
+  * fix reference to old param name in exists() [ebensing](https://github.com/ebensing)
+
+0.1.1 / 2013-06-24
+==================
+
+  * fixed; $intersects -> $geoIntersects #14 [ebensing](https://github.com/ebensing)
+  * fixed; Retain key order when copying objects #15 [ebensing](https://github.com/ebensing)
+  * bump mongodb dev dep
+
+0.1.0 / 2013-05-06
+==================
+
+  * findAndModify; return the query
+  * move mquery.proto.canMerge to mquery.canMerge
+  * overwrite option now works with non-empty objects
+  * use strict mode
+  * validate count options
+  * validate distinct options
+  * add aggregate to base collection methods
+  * clone merge arguments
+  * clone merged update arguments
+  * move subclass to mquery.prototype.toConstructor
+  * fixed; maxScan casing
+  * use regexp-clone
+  * added; geometry/intersects support
+  * support $and
+  * near: do not use "radius"
+  * callbacks always fire on next turn of loop
+  * defined collection interface
+  * remove time from tests
+  * clarify goals
+  * updated docs;
+
+0.0.1 / 2012-12-15
+==================
+
+  * initial release
@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2012 [Aaron Heckmann](aaron.heckmann+github@gmail.com)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,22 @@
+
+test:
+	@NODE_ENV=test ./node_modules/.bin/mocha $(T) $(TESTS)
+
+test-cov:
+	@NODE_ENV=test node \
+		node_modules/.bin/istanbul cover \
+		./node_modules/.bin/_mocha \
+		-- -u exports \
+
+open-cov:
+	open coverage/lcov-report/index.html
+
+test-travis:
+	@NODE_ENV=test node \
+		node_modules/.bin/istanbul cover \
+		./node_modules/.bin/_mocha \
+		--report lcovonly \
+		-- -u exports \
+		--bail
+
+.PHONY: test test-cov open-cov test-travis
@@ -0,0 +1,46 @@
+'use strict';
+
+/**
+ * methods a collection must implement
+ */
+
+var methods = [
+    'find'
+  , 'findOne'
+  , 'update'
+  , 'updateMany',
+  , 'updateOne'
+  , 'replaceOne'
+  , 'remove'
+  , 'count'
+  , 'distinct'
+  , 'findAndModify'
+  , 'aggregate'
+  , 'findStream'
+  , 'deleteOne'
+  , 'deleteMany'
+];
+
+/**
+ * Collection base class from which implementations inherit
+ */
+
+function Collection () {}
+
+for (var i = 0, len = methods.length; i < len; ++i) {
+  var method = methods[i];
+  Collection.prototype[method] = notImplemented(method);
+}
+
+module.exports = exports = Collection;
+Collection.methods = methods;
+
+/**
+ * creates a function which throws an implementation error
+ */
+
+function notImplemented (method) {
+  return function () {
+    throw new Error('collection.' + method + ' not implemented');
+  }
+}
@@ -0,0 +1,13 @@
+'use strict';
+
+var env = require('../env')
+
+if ('unknown' == env.type) {
+  throw new Error('Unknown environment')
+}
+
+module.exports =
+  env.isNode ? require('./node') :
+  env.isMongo ? require('./collection') :
+  require('./collection');
+
@@ -0,0 +1,151 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+
+var Collection = require('./collection');
+var utils = require('../utils');
+
+function NodeCollection (col) {
+  this.collection = col;
+  this.collectionName = col.collectionName;
+}
+
+/**
+ * inherit from collection base class
+ */
+
+utils.inherits(NodeCollection, Collection);
+
+/**
+ * find(match, options, function(err, docs))
+ */
+
+NodeCollection.prototype.find = function (match, options, cb) {
+  this.collection.find(match, options, function (err, cursor) {
+    if (err) return cb(err);
+
+    try {
+      cursor.toArray(cb);
+    } catch (error) {
+      cb(error);
+    }
+  });
+}
+
+/**
+ * findOne(match, options, function(err, doc))
+ */
+
+NodeCollection.prototype.findOne = function (match, options, cb) {
+  this.collection.findOne(match, options, cb);
+}
+
+/**
+ * count(match, options, function(err, count))
+ */
+
+NodeCollection.prototype.count = function (match, options, cb) {
+  this.collection.count(match, options, cb);
+}
+
+/**
+ * distinct(prop, match, options, function(err, count))
+ */
+
+NodeCollection.prototype.distinct  = function (prop, match, options, cb) {
+  this.collection.distinct(prop, match, options, cb);
+}
+
+/**
+ * update(match, update, options, function(err[, result]))
+ */
+
+NodeCollection.prototype.update = function (match, update, options, cb) {
+  this.collection.update(match, update, options, cb);
+}
+
+/**
+ * update(match, update, options, function(err[, result]))
+ */
+
+NodeCollection.prototype.updateMany = function (match, update, options, cb) {
+  this.collection.updateMany(match, update, options, cb);
+}
+
+/**
+ * update(match, update, options, function(err[, result]))
+ */
+
+NodeCollection.prototype.updateOne = function (match, update, options, cb) {
+  this.collection.updateOne(match, update, options, cb);
+}
+
+/**
+ * replaceOne(match, update, options, function(err[, result]))
+ */
+
+NodeCollection.prototype.replaceOne = function (match, update, options, cb) {
+  this.collection.replaceOne(match, update, options, cb);
+}
+
+/**
+ * deleteOne(match, options, function(err[, result])
+ */
+
+NodeCollection.prototype.deleteOne = function (match, options, cb) {
+  this.collection.deleteOne(match, options, cb);
+}
+
+/**
+ * deleteMany(match, options, function(err[, result])
+ */
+
+NodeCollection.prototype.deleteMany = function (match, options, cb) {
+  this.collection.deleteMany(match, options, cb);
+}
+
+/**
+ * remove(match, options, function(err[, result])
+ */
+
+NodeCollection.prototype.remove = function (match, options, cb) {
+  this.collection.remove(match, options, cb);
+}
+
+/**
+ * findAndModify(match, update, options, function(err, doc))
+ */
+
+NodeCollection.prototype.findAndModify = function (match, update, options, cb) {
+  var sort = Array.isArray(options.sort) ? options.sort : [];
+  this.collection.findAndModify(match, sort, update, options, cb);
+}
+
+/**
+ * var stream = findStream(match, findOptions, streamOptions)
+ */
+
+NodeCollection.prototype.findStream = function(match, findOptions, streamOptions) {
+  return this.collection.find(match, findOptions);
+}
+
+/**
+ * var cursor = findCursor(match, findOptions)
+ */
+
+NodeCollection.prototype.findCursor = function(match, findOptions) {
+  return this.collection.find(match, findOptions);
+}
+
+/**
+ * aggregation(operators..., function(err, doc))
+ * TODO
+ */
+
+/**
+ * Expose
+ */
+
+module.exports = exports = NodeCollection;
@@ -0,0 +1,22 @@
+'use strict';
+
+exports.isNode = 'undefined' != typeof process
+           && 'object' == typeof module
+           && 'object' == typeof global
+           && 'function' == typeof Buffer
+           && process.argv
+
+exports.isMongo = !exports.isNode
+           && 'function' == typeof printjson
+           && 'function' == typeof ObjectId
+           && 'function' == typeof rs
+           && 'function' == typeof sh;
+
+exports.isBrowser = !exports.isNode
+                 && !exports.isMongo
+                 && 'undefined' != typeof window;
+
+exports.type = exports.isNode ? 'node'
+  : exports.isMongo ? 'mongo'
+  : exports.isBrowser ? 'browser'
+  : 'unknown'
@@ -0,0 +1,88 @@
+'use strict';
+
+var denied = exports;
+
+denied.distinct = function (self) {
+  if (self._fields && Object.keys(self._fields).length > 0) {
+    return 'field selection and slice'
+  }
+
+  var keys = Object.keys(denied.distinct);
+  var err;
+
+  keys.every(function (option) {
+    if (self.options[option]) {
+      err = option;
+      return false;
+    }
+    return true;
+  });
+
+  return err;
+};
+denied.distinct.select =
+denied.distinct.slice =
+denied.distinct.sort =
+denied.distinct.limit =
+denied.distinct.skip =
+denied.distinct.batchSize =
+denied.distinct.comment =
+denied.distinct.maxScan =
+denied.distinct.snapshot =
+denied.distinct.hint =
+denied.distinct.tailable = true;
+
+
+// aggregation integration
+
+
+denied.findOneAndUpdate =
+denied.findOneAndRemove = function (self) {
+  var keys = Object.keys(denied.findOneAndUpdate);
+  var err;
+
+  keys.every(function (option) {
+    if (self.options[option]) {
+      err = option;
+      return false;
+    }
+    return true;
+  });
+
+  return err;
+}
+denied.findOneAndUpdate.limit =
+denied.findOneAndUpdate.skip =
+denied.findOneAndUpdate.batchSize =
+denied.findOneAndUpdate.maxScan =
+denied.findOneAndUpdate.snapshot =
+denied.findOneAndUpdate.hint =
+denied.findOneAndUpdate.tailable =
+denied.findOneAndUpdate.comment = true;
+
+
+denied.count = function (self) {
+  if (self._fields && Object.keys(self._fields).length > 0) {
+    return 'field selection and slice'
+  }
+
+  var keys = Object.keys(denied.count);
+  var err;
+
+  keys.every(function (option) {
+    if (self.options[option]) {
+      err = option;
+      return false;
+    }
+    return true;
+  });
+
+  return err;
+}
+
+denied.count.slice =
+denied.count.batchSize =
+denied.count.comment =
+denied.count.maxScan =
+denied.count.snapshot =
+denied.count.tailable = true;
@@ -0,0 +1,342 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+var RegExpClone = require('regexp-clone')
+
+/**
+ * Clones objects
+ *
+ * @param {Object} obj the object to clone
+ * @param {Object} options
+ * @return {Object} the cloned object
+ * @api private
+ */
+
+var clone = exports.clone = function clone (obj, options) {
+  if (obj === undefined || obj === null)
+    return obj;
+
+  if (Array.isArray(obj))
+    return exports.cloneArray(obj, options);
+
+  if (obj.constructor) {
+    if (/ObjectI[dD]$/.test(obj.constructor.name)) {
+      return 'function' == typeof obj.clone
+        ? obj.clone()
+        : new obj.constructor(obj.id);
+    }
+
+    if ('ReadPreference' === obj._type && obj.isValid && obj.toObject) {
+      return 'function' == typeof obj.clone
+        ? obj.clone()
+        : new obj.constructor(obj.mode, clone(obj.tags, options));
+    }
+
+    if ('Binary' == obj._bsontype && obj.buffer && obj.value) {
+      return 'function' == typeof obj.clone
+        ? obj.clone()
+        : new obj.constructor(obj.value(true), obj.sub_type);
+    }
+
+    if ('Date' === obj.constructor.name || 'Function' === obj.constructor.name)
+      return new obj.constructor(+obj);
+
+    if ('RegExp' === obj.constructor.name)
+      return RegExpClone(obj);
+
+    if ('Buffer' === obj.constructor.name)
+      return exports.cloneBuffer(obj);
+  }
+
+  if (isObject(obj))
+    return exports.cloneObject(obj, options);
+
+  if (obj.valueOf)
+    return obj.valueOf();
+};
+
+/*!
+ * ignore
+ */
+
+var cloneObject = exports.cloneObject = function cloneObject (obj, options) {
+  var retainKeyOrder = options && options.retainKeyOrder
+    , minimize = options && options.minimize
+    , ret = {}
+    , hasKeys
+    , keys
+    , val
+    , k
+    , i
+
+  if (retainKeyOrder) {
+    for (k in obj) {
+      val = clone(obj[k], options);
+
+      if (!minimize || ('undefined' !== typeof val)) {
+        hasKeys || (hasKeys = true);
+        ret[k] = val;
+      }
+    }
+  } else {
+    // faster
+
+    keys = Object.keys(obj);
+    i = keys.length;
+
+    while (i--) {
+      k = keys[i];
+      val = clone(obj[k], options);
+
+      if (!minimize || ('undefined' !== typeof val)) {
+        if (!hasKeys) hasKeys = true;
+        ret[k] = val;
+      }
+    }
+  }
+
+  return minimize
+    ? hasKeys && ret
+    : ret;
+};
+
+var cloneArray = exports.cloneArray = function cloneArray (arr, options) {
+  var ret = [];
+  for (var i = 0, l = arr.length; i < l; i++)
+    ret.push(clone(arr[i], options));
+  return ret;
+};
+
+/**
+ * process.nextTick helper.
+ *
+ * Wraps the given `callback` in a try/catch. If an error is
+ * caught it will be thrown on nextTick.
+ *
+ * node-mongodb-native had a habit of state corruption when
+ * an error was immediately thrown from within a collection
+ * method (find, update, etc) callback.
+ *
+ * @param {Function} [callback]
+ * @api private
+ */
+
+var tick = exports.tick = function tick (callback) {
+  if ('function' !== typeof callback) return;
+  return function () {
+    // callbacks should always be fired on the next
+    // turn of the event loop. A side benefit is
+    // errors thrown from executing the callback
+    // will not cause drivers state to be corrupted
+    // which has historically been a problem.
+    var args = arguments;
+    soon(function(){
+      callback.apply(this, args);
+    });
+  }
+}
+
+/**
+ * Merges `from` into `to` without overwriting existing properties.
+ *
+ * @param {Object} to
+ * @param {Object} from
+ * @api private
+ */
+
+var merge = exports.merge = function merge (to, from) {
+  var keys = Object.keys(from)
+    , i = keys.length
+    , key
+
+  while (i--) {
+    key = keys[i];
+    if ('undefined' === typeof to[key]) {
+      to[key] = from[key];
+    } else {
+      if (exports.isObject(from[key])) {
+        merge(to[key], from[key]);
+      } else {
+        to[key] = from[key];
+      }
+    }
+  }
+}
+
+/**
+ * Same as merge but clones the assigned values.
+ *
+ * @param {Object} to
+ * @param {Object} from
+ * @api private
+ */
+
+var mergeClone = exports.mergeClone = function mergeClone (to, from) {
+  var keys = Object.keys(from)
+    , i = keys.length
+    , key
+
+  while (i--) {
+    key = keys[i];
+    if ('undefined' === typeof to[key]) {
+      // make sure to retain key order here because of a bug handling the $each
+      // operator in mongodb 2.4.4
+      to[key] = clone(from[key], { retainKeyOrder : 1});
+    } else {
+      if (exports.isObject(from[key])) {
+        mergeClone(to[key], from[key]);
+      } else {
+        // make sure to retain key order here because of a bug handling the
+        // $each operator in mongodb 2.4.4
+        to[key] = clone(from[key], { retainKeyOrder : 1});
+      }
+    }
+  }
+}
+
+/**
+ * Read pref helper (mongo 2.2 drivers support this)
+ *
+ * Allows using aliases instead of full preference names:
+ *
+ *     p   primary
+ *     pp  primaryPreferred
+ *     s   secondary
+ *     sp  secondaryPreferred
+ *     n   nearest
+ *
+ * @param {String} pref
+ */
+
+exports.readPref = function readPref (pref) {
+  switch (pref) {
+    case 'p':
+      pref = 'primary';
+      break;
+    case 'pp':
+      pref = 'primaryPreferred';
+      break;
+    case 's':
+      pref = 'secondary';
+      break;
+    case 'sp':
+      pref = 'secondaryPreferred';
+      break;
+    case 'n':
+      pref = 'nearest';
+      break;
+  }
+
+  return pref;
+}
+
+/**
+ * Object.prototype.toString.call helper
+ */
+
+var _toString = Object.prototype.toString;
+var toString = exports.toString = function (arg) {
+  return _toString.call(arg);
+}
+
+/**
+ * Determines if `arg` is an object.
+ *
+ * @param {Object|Array|String|Function|RegExp|any} arg
+ * @return {Boolean}
+ */
+
+var isObject = exports.isObject = function (arg) {
+  return '[object Object]' == exports.toString(arg);
+}
+
+/**
+ * Determines if `arg` is an array.
+ *
+ * @param {Object}
+ * @return {Boolean}
+ * @see nodejs utils
+ */
+
+var isArray = exports.isArray = function (arg) {
+  return Array.isArray(arg) ||
+    'object' == typeof arg && '[object Array]' == exports.toString(arg);
+}
+
+/**
+ * Object.keys helper
+ */
+
+exports.keys = Object.keys || function (obj) {
+  var keys = [];
+  for (var k in obj) if (obj.hasOwnProperty(k)) {
+    keys.push(k);
+  }
+  return keys;
+}
+
+/**
+ * Basic Object.create polyfill.
+ * Only one argument is supported.
+ *
+ * Based on https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/create
+ */
+
+exports.create = 'function' == typeof Object.create
+  ? Object.create
+  : create;
+
+function create (proto) {
+  if (arguments.length > 1) {
+    throw new Error("Adding properties is not supported")
+  }
+
+  function F () {}
+  F.prototype = proto;
+  return new F;
+}
+
+/**
+ * inheritance
+ */
+
+exports.inherits = function (ctor, superCtor) {
+  ctor.prototype = exports.create(superCtor.prototype);
+  ctor.prototype.constructor = ctor;
+}
+
+/**
+ * nextTick helper
+ * compat with node 0.10 which behaves differently than previous versions
+ */
+
+var soon = exports.soon = 'function' == typeof setImmediate
+  ? setImmediate
+  : process.nextTick;
+
+/**
+ * Clones the contents of a buffer.
+ *
+ * @param {Buffer} buff
+ * @return {Buffer}
+ */
+
+exports.cloneBuffer = function (buff) {
+  var dupe = new Buffer(buff.length);
+  buff.copy(dupe, 0, 0, buff.length);
+  return dupe;
+};
+
+/**
+ * Check if this object is an arguments object
+ *
+ * @param {Any} v
+ * @return {Boolean}
+ */
+
+exports.isArgumentsObject = function(v) {
+  return Object.prototype.toString.call(v) === '[object Arguments]';
+};
@@ -0,0 +1,2 @@
+*.sw*
+node_modules/
@@ -0,0 +1,4 @@
+language: node_js
+node_js:
+  - 0.6
+  - 0.8
@@ -0,0 +1,30 @@
+
+0.0.5 / 2013-02-05
+==================
+
+  * optimization: remove use of arguments [jkroso](https://github.com/jkroso)
+  * add scripts to component.json [jkroso](https://github.com/jkroso)
+  * tests; remove time for travis
+
+0.0.4 / 2013-01-07
+==================
+
+  * added component.json #1 [jkroso](https://github.com/jkroso)
+  * reversed array loop #1 [jkroso](https://github.com/jkroso)
+  * remove fn params
+
+0.0.3 / 2012-09-29
+==================
+
+  * faster with negative start args
+
+0.0.2 / 2012-09-29
+==================
+
+  * support full [].slice semantics
+
+0.0.1 / 2012-09-29
+===================
+
+  * initial release
+
@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2012 [Aaron Heckmann](aaron.heckmann+github@gmail.com)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,5 @@
+
+test:
+	@./node_modules/.bin/mocha $(T) $(TESTS)
+
+.PHONY: test
@@ -0,0 +1,62 @@
+#sliced
+==========
+
+A faster alternative to `[].slice.call(arguments)`.
+
+[![Build Status](https://secure.travis-ci.org/aheckmann/sliced.png)](http://travis-ci.org/aheckmann/sliced)
+
+Example output from [benchmark.js](https://github.com/bestiejs/benchmark.js)
+
+    Array.prototype.slice.call x 1,320,205 ops/sec ±2.35% (92 runs sampled)
+    [].slice.call x 1,314,605 ops/sec ±1.60% (95 runs sampled)
+    cached slice.call x 10,468,380 ops/sec ±1.45% (95 runs sampled)
+    sliced x 16,608,237 ops/sec ±1.40% (92 runs sampled)
+    fastest is sliced
+
+    Array.prototype.slice.call(arguments, 1) x 1,383,584 ops/sec ±1.73% (97 runs sampled)
+    [].slice.call(arguments, 1) x 1,494,735 ops/sec ±1.33% (95 runs sampled)
+    cached slice.call(arguments, 1) x 10,085,270 ops/sec ±1.51% (97 runs sampled)
+    sliced(arguments, 1) x 16,620,480 ops/sec ±1.29% (95 runs sampled)
+    fastest is sliced(arguments, 1)
+
+    Array.prototype.slice.call(arguments, -1) x 1,303,262 ops/sec ±1.62% (94 runs sampled)
+    [].slice.call(arguments, -1) x 1,325,615 ops/sec ±1.36% (97 runs sampled)
+    cached slice.call(arguments, -1) x 9,673,603 ops/sec ±1.70% (96 runs sampled)
+    sliced(arguments, -1) x 16,384,575 ops/sec ±1.06% (91 runs sampled)
+    fastest is sliced(arguments, -1)
+
+    Array.prototype.slice.call(arguments, -2, -10) x 1,404,390 ops/sec ±1.61% (95 runs sampled)
+    [].slice.call(arguments, -2, -10) x 1,514,367 ops/sec ±1.21% (96 runs sampled)
+    cached slice.call(arguments, -2, -10) x 9,836,017 ops/sec ±1.21% (95 runs sampled)
+    sliced(arguments, -2, -10) x 18,544,882 ops/sec ±1.30% (91 runs sampled)
+    fastest is sliced(arguments, -2, -10)
+
+    Array.prototype.slice.call(arguments, -2, -1) x 1,458,604 ops/sec ±1.41% (97 runs sampled)
+    [].slice.call(arguments, -2, -1) x 1,536,547 ops/sec ±1.63% (99 runs sampled)
+    cached slice.call(arguments, -2, -1) x 10,060,633 ops/sec ±1.37% (96 runs sampled)
+    sliced(arguments, -2, -1) x 18,608,712 ops/sec ±1.08% (93 runs sampled)
+    fastest is sliced(arguments, -2, -1)
+
+_Benchmark  [source](https://github.com/aheckmann/sliced/blob/master/bench.js)._
+
+##Usage
+
+`sliced` accepts the same arguments as `Array#slice` so you can easily swap it out.
+
+```js
+function zing () {
+  var slow = [].slice.call(arguments, 1, 8);
+  var args = slice(arguments, 1, 8);
+
+  var slow = Array.prototype.slice.call(arguments);
+  var args = slice(arguments);
+  // etc
+}
+```
+
+## install
+
+    npm install sliced
+
+
+[LICENSE](https://github.com/aheckmann/sliced/blob/master/LICENSE)
@@ -0,0 +1,95 @@
+
+var sliced = require('./')
+var Bench = require('benchmark');
+var s = new Bench.Suite;
+var slice = [].slice;
+
+s.add('Array.prototype.slice.call', function () {
+  Array.prototype.slice.call(arguments);
+}).add('[].slice.call', function () {
+  [].slice.call(arguments);
+}).add('cached slice.call', function () {
+  slice.call(arguments)
+}).add('sliced', function () {
+  sliced(arguments)
+}).on('cycle', function (evt) {
+  console.log(String(evt.target));
+}).on('complete', function () {
+  console.log('fastest is %s', this.filter('fastest').pluck('name'));
+})
+.run();
+
+var s = new Bench.Suite;
+s.add('Array.prototype.slice.call(arguments, 1)', function () {
+  Array.prototype.slice.call(arguments, 1);
+}).add('[].slice.call(arguments, 1)', function () {
+  [].slice.call(arguments, 1);
+}).add('cached slice.call(arguments, 1)', function () {
+  slice.call(arguments, 1)
+}).add('sliced(arguments, 1)', function () {
+  sliced(arguments, 1)
+}).on('cycle', function (evt) {
+  console.log(String(evt.target));
+}).on('complete', function () {
+  console.log('fastest is %s', this.filter('fastest').pluck('name'));
+})
+.run();
+
+var s = new Bench.Suite;
+s.add('Array.prototype.slice.call(arguments, -1)', function () {
+  Array.prototype.slice.call(arguments, -1);
+}).add('[].slice.call(arguments, -1)', function () {
+  [].slice.call(arguments, -1);
+}).add('cached slice.call(arguments, -1)', function () {
+  slice.call(arguments, -1)
+}).add('sliced(arguments, -1)', function () {
+  sliced(arguments, -1)
+}).on('cycle', function (evt) {
+  console.log(String(evt.target));
+}).on('complete', function () {
+  console.log('fastest is %s', this.filter('fastest').pluck('name'));
+})
+.run();
+
+var s = new Bench.Suite;
+s.add('Array.prototype.slice.call(arguments, -2, -10)', function () {
+  Array.prototype.slice.call(arguments, -2, -10);
+}).add('[].slice.call(arguments, -2, -10)', function () {
+  [].slice.call(arguments, -2, -10);
+}).add('cached slice.call(arguments, -2, -10)', function () {
+  slice.call(arguments, -2, -10)
+}).add('sliced(arguments, -2, -10)', function () {
+  sliced(arguments, -2, -10)
+}).on('cycle', function (evt) {
+  console.log(String(evt.target));
+}).on('complete', function () {
+  console.log('fastest is %s', this.filter('fastest').pluck('name'));
+})
+.run();
+
+var s = new Bench.Suite;
+s.add('Array.prototype.slice.call(arguments, -2, -1)', function () {
+  Array.prototype.slice.call(arguments, -2, -1);
+}).add('[].slice.call(arguments, -2, -1)', function () {
+  [].slice.call(arguments, -2, -1);
+}).add('cached slice.call(arguments, -2, -1)', function () {
+  slice.call(arguments, -2, -1)
+}).add('sliced(arguments, -2, -1)', function () {
+  sliced(arguments, -2, -1)
+}).on('cycle', function (evt) {
+  console.log(String(evt.target));
+}).on('complete', function () {
+  console.log('fastest is %s', this.filter('fastest').pluck('name'));
+})
+.run();
+
+/**
+ * Output:
+ *
+ * Array.prototype.slice.call x 1,289,592 ops/sec ±2.88% (87 runs sampled)
+ * [].slice.call x 1,345,451 ops/sec ±1.68% (97 runs sampled)
+ * cached slice.call x 10,719,886 ops/sec ±1.04% (99 runs sampled)
+ * sliced x 15,809,545 ops/sec ±1.46% (93 runs sampled)
+ * fastest is sliced
+ *
+ */
@@ -0,0 +1,14 @@
+{
+  "name": "sliced",
+  "version": "0.0.5",
+  "description": "A faster Node.js alternative to Array.prototype.slice.call(arguments)",
+  "repo" : "aheckmann/sliced",
+  "keywords": [
+    "arguments",
+    "slice",
+    "array"
+  ],
+  "scripts": ["lib/sliced.js", "index.js"],
+  "author": "Aaron Heckmann <aaron.heckmann+github@gmail.com>",
+  "license": "MIT"
+}
@@ -0,0 +1 @@
+module.exports = exports = require('./lib/sliced');
@@ -0,0 +1,33 @@
+
+/**
+ * An Array.prototype.slice.call(arguments) alternative
+ *
+ * @param {Object} args something with a length
+ * @param {Number} slice
+ * @param {Number} sliceEnd
+ * @api public
+ */
+
+module.exports = function (args, slice, sliceEnd) {
+  var ret = [];
+  var len = args.length;
+
+  if (0 === len) return ret;
+
+  var start = slice < 0
+    ? Math.max(0, slice + len)
+    : slice || 0;
+
+  if (sliceEnd !== undefined) {
+    len = sliceEnd < 0
+      ? sliceEnd + len
+      : sliceEnd
+  }
+
+  while (len-- > start) {
+    ret[len - start] = args[len];
+  }
+
+  return ret;
+}
+
@@ -0,0 +1,56 @@
+{
+  "_from": "sliced@0.0.5",
+  "_id": "sliced@0.0.5",
+  "_inBundle": false,
+  "_integrity": "sha1-XtwETKTrb3gW1Qui/GPiXY/kcH8=",
+  "_location": "/mquery/sliced",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "sliced@0.0.5",
+    "name": "sliced",
+    "escapedName": "sliced",
+    "rawSpec": "0.0.5",
+    "saveSpec": null,
+    "fetchSpec": "0.0.5"
+  },
+  "_requiredBy": [
+    "/mquery"
+  ],
+  "_resolved": "https://registry.npmjs.org/sliced/-/sliced-0.0.5.tgz",
+  "_shasum": "5edc044ca4eb6f7816d50ba2fc63e25d8fe4707f",
+  "_spec": "sliced@0.0.5",
+  "_where": "/app/node_modules/mquery",
+  "author": {
+    "name": "Aaron Heckmann",
+    "email": "aaron.heckmann+github@gmail.com"
+  },
+  "bugs": {
+    "url": "https://github.com/aheckmann/sliced/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "A faster Node.js alternative to Array.prototype.slice.call(arguments)",
+  "devDependencies": {
+    "benchmark": "~1.0.0",
+    "mocha": "1.5.0"
+  },
+  "homepage": "https://github.com/aheckmann/sliced#readme",
+  "keywords": [
+    "arguments",
+    "slice",
+    "array"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "sliced",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/aheckmann/sliced.git"
+  },
+  "scripts": {
+    "test": "make test"
+  },
+  "version": "0.0.5"
+}
@@ -0,0 +1,80 @@
+
+var sliced = require('../')
+var assert = require('assert')
+
+describe('sliced', function(){
+  it('exports a function', function(){
+    assert.equal('function', typeof sliced);
+  })
+  describe('with 1 arg', function(){
+    it('returns an array of the arg', function(){
+      var o = [3, "4", {}];
+      var r = sliced(o);
+      assert.equal(3, r.length);
+      assert.equal(o[0], r[0]);
+      assert.equal(o[1], r[1]);
+      assert.equal(o[1], r[1]);
+    })
+  })
+  describe('with 2 args', function(){
+    it('returns an array of the arg starting at the 2nd arg', function(){
+      var o = [3, "4", 5, null];
+      var r = sliced(o, 2);
+      assert.equal(2, r.length);
+      assert.equal(o[2], r[0]);
+      assert.equal(o[3], r[1]);
+    })
+  })
+  describe('with 3 args', function(){
+    it('returns an array of the arg from the 2nd to the 3rd arg', function(){
+      var o = [3, "4", 5, null];
+      var r = sliced(o, 1, 2);
+      assert.equal(1, r.length);
+      assert.equal(o[1], r[0]);
+    })
+  })
+  describe('with negative start and no end', function(){
+    it('begins at an offset from the end and includes all following elements', function(){
+      var o = [3, "4", 5, null];
+      var r = sliced(o, -2);
+      assert.equal(2, r.length);
+      assert.equal(o[2], r[0]);
+      assert.equal(o[3], r[1]);
+
+      var r = sliced(o, -12);
+      assert.equal(4, r.length);
+      assert.equal(o[0], r[0]);
+      assert.equal(o[1], r[1]);
+    })
+  })
+  describe('with negative start and positive end', function(){
+    it('begins at an offset from the end and includes `end` elements', function(){
+      var o = [3, "4", {x:1}, null];
+
+      var r = sliced(o, -2, 1);
+      assert.equal(0, r.length);
+
+      var r = sliced(o, -2, 2);
+      assert.equal(0, r.length);
+
+      var r = sliced(o, -2, 3);
+      assert.equal(1, r.length);
+      assert.equal(o[2], r[0]);
+    })
+  })
+  describe('with negative start and negative end', function(){
+    it('begins at `start` offset from the end and includes all elements up to `end` offset from the end', function(){
+      var o = [3, "4", {x:1}, null];
+      var r = sliced(o, -3, -1);
+      assert.equal(2, r.length);
+      assert.equal(o[1], r[0]);
+      assert.equal(o[2], r[1]);
+
+      var r = sliced(o, -3, -3);
+      assert.equal(0, r.length);
+
+      var r = sliced(o, -3, -4);
+      assert.equal(0, r.length);
+    })
+  })
+})
@@ -0,0 +1,63 @@
+{
+  "_from": "mquery@2.3.3",
+  "_id": "mquery@2.3.3",
+  "_inBundle": false,
+  "_integrity": "sha512-NC8L14kn+qxJbbJ1gbcEMDxF0sC3sv+1cbRReXXwVvowcwY1y9KoVZFq0ebwARibsadu8lx8nWGvm3V0Pf0ZWQ==",
+  "_location": "/mquery",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "mquery@2.3.3",
+    "name": "mquery",
+    "escapedName": "mquery",
+    "rawSpec": "2.3.3",
+    "saveSpec": null,
+    "fetchSpec": "2.3.3"
+  },
+  "_requiredBy": [
+    "/mongoose"
+  ],
+  "_resolved": "https://registry.npmjs.org/mquery/-/mquery-2.3.3.tgz",
+  "_shasum": "221412e5d4e7290ca5582dd16ea8f190a506b518",
+  "_spec": "mquery@2.3.3",
+  "_where": "/app/node_modules/mongoose",
+  "author": {
+    "name": "Aaron Heckmann",
+    "email": "aaron.heckmann+github@gmail.com"
+  },
+  "bugs": {
+    "url": "https://github.com/aheckmann/mquery/issues/new"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "bluebird": "3.5.0",
+    "debug": "2.6.9",
+    "regexp-clone": "0.0.1",
+    "sliced": "0.0.5"
+  },
+  "deprecated": false,
+  "description": "Expressive query building for MongoDB",
+  "devDependencies": {
+    "istanbul": "0.3.2",
+    "mocha": "3.2.0",
+    "mongodb": "~2.2"
+  },
+  "homepage": "https://github.com/aheckmann/mquery/",
+  "keywords": [
+    "mongodb",
+    "query",
+    "builder"
+  ],
+  "license": "MIT",
+  "main": "lib/mquery.js",
+  "name": "mquery",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/aheckmann/mquery.git"
+  },
+  "scripts": {
+    "test": "mocha test/index.js test/*.test.js"
+  },
+  "version": "2.3.3"
+}
@@ -0,0 +1,28 @@
+
+var assert = require('assert')
+var slice = require('sliced')
+var mongo = require('mongodb')
+var utils = require('../../').utils;
+
+var uri = process.env.MQUERY_URI || 'mongodb://localhost/mquery';
+var db;
+
+exports.getCollection = function (cb) {
+  mongo.MongoClient.connect(uri, function (err, db_) {
+    assert.ifError(err);
+    db = db_;
+
+    var collection = db.collection('stuff');
+
+    // clean test db before starting
+    db.dropDatabase(function () {
+      cb(null, collection);
+    });
+  })
+}
+
+exports.dropCollection = function (cb) {
+  db.dropDatabase(function () {
+    db.close(cb);
+  })
+}
@@ -0,0 +1,20 @@
+
+var assert = require('assert')
+var env = require('../').env;
+
+console.log('environment: %s', env.type);
+
+var col;
+switch (env.type) {
+  case 'node':
+    col = require('./collection/node');
+    break;
+  case 'mongo':
+    col = require('./collection/mongo');
+  case 'browser':
+    col = require('./collection/browser');
+  default:
+    throw new Error('missing collection implementation for environment: ' + env.type);
+}
+
+module.exports = exports = col;
@@ -0,0 +1,143 @@
+
+var utils = require('../lib/utils');
+var assert = require('assert');
+
+var mongo;
+try {
+  mongo = new require('mongodb');
+} catch (e) {}
+
+describe('lib/utils', function() {
+  describe('clone', function() {
+    it('clones constructors named ObjectId', function(done) {
+      function ObjectId (id) {
+        this.id = id;
+      }
+
+      var o1 = new ObjectId('1234');
+      var o2 = utils.clone(o1);
+      assert.ok(o2 instanceof ObjectId);
+
+      done();
+    });
+
+    it('clones constructors named ObjectID', function(done) {
+      function ObjectID (id) {
+        this.id = id;
+      }
+
+      var o1 = new ObjectID('1234');
+      var o2 = utils.clone(o1);
+
+      assert.ok(o2 instanceof ObjectID);
+      done();
+    });
+
+    it('does not clone constructors named ObjectIdd', function(done) {
+      function ObjectIdd (id) {
+        this.id = id;
+      }
+
+      var o1 = new ObjectIdd('1234');
+      var o2 = utils.clone(o1);
+      assert.ok(!(o2 instanceof ObjectIdd));
+
+      done();
+    });
+
+    it('optionally clones ObjectId constructors using its clone method', function(done) {
+      function ObjectID (id) {
+        this.id = id;
+        this.cloned = false;
+      }
+
+      ObjectID.prototype.clone = function () {
+        var ret = new ObjectID(this.id);
+        ret.cloned = true;
+        return ret;
+      }
+
+      var id = 1234;
+      var o1 = new ObjectID(id);
+      assert.equal(id, o1.id);
+      assert.equal(false, o1.cloned);
+
+      var o2 = utils.clone(o1);
+      assert.ok(o2 instanceof ObjectID);
+      assert.equal(id, o2.id);
+      assert.ok(o2.cloned);
+      done();
+    });
+
+    it('clones mongodb.ReadPreferences', function (done) {
+      if (!mongo) return done();
+
+      var tags = [
+        {dc: 'tag1'}
+      ];
+      var prefs = [
+        new mongo.ReadPreference("primary"),
+        new mongo.ReadPreference(mongo.ReadPreference.PRIMARY_PREFERRED),
+        new mongo.ReadPreference("primary", tags),
+        mongo.ReadPreference("primary", tags)
+      ];
+
+      var prefsCloned = utils.clone(prefs);
+
+      for (var i = 0; i < prefsCloned.length; i++) {
+        assert.notEqual(prefs[i], prefsCloned[i]);
+        assert.ok(prefsCloned[i] instanceof mongo.ReadPreference);
+        assert.ok(prefsCloned[i].isValid());
+        if (prefs[i].tags) {
+          assert.ok(prefsCloned[i].tags);
+          assert.notEqual(prefs[i].tags, prefsCloned[i].tags);
+          assert.notEqual(prefs[i].tags[0], prefsCloned[i].tags[0]);
+        } else {
+          assert.equal(prefsCloned[i].tags, null);
+        }
+      }
+
+      done();
+    });
+
+    it('clones mongodb.Binary', function(done){
+      if (!mongo) return done();
+
+      var buf = new Buffer('hi');
+      var binary= new mongo.Binary(buf, 2);
+      var clone = utils.clone(binary);
+      assert.equal(binary.sub_type, clone.sub_type);
+      assert.equal(String(binary.buffer), String(buf));
+      assert.ok(binary !== clone);
+      done();
+    })
+
+    it('handles objects with no constructor', function(done) {
+      var name ='335';
+
+      var o = Object.create(null);
+      o.name = name;
+
+      var clone;
+      assert.doesNotThrow(function() {
+        clone = utils.clone(o);
+      });
+
+      assert.equal(name, clone.name);
+      assert.ok(o != clone);
+      done();
+    });
+
+    it('handles buffers', function(done){
+      var buff = new Buffer(10);
+      buff.fill(1);
+      var clone = utils.clone(buff);
+
+      for (var i = 0; i < buff.length; i++) {
+        assert.equal(buff[i], clone[i]);
+      }
+
+      done();
+    });
+  });
+});
				`@@ -0,0 +1 @@`
				`module.exports = exports = require('./lib/sliced');`