api, login, auth

20 files changed, 6425 insertions, 0 deletions

diff --git a/node_modules/bson/lib/bson/binary.js b/node_modules/bson/lib/bson/binary.js
new file mode 100644
index 0000000..6d190bc
--- /dev/null
+++ b/node_modules/bson/lib/bson/binary.js
@@ -0,0 +1,384 @@
+/**
+ * Module dependencies.
+ * @ignore
+ */
+
+// Test if we're in Node via presence of "global" not absence of "window"
+// to support hybrid environments like Electron
+if (typeof global !== 'undefined') {
+  var Buffer = require('buffer').Buffer; // TODO just use global Buffer
+}
+
+var utils = require('./parser/utils');
+
+/**
+ * A class representation of the BSON Binary type.
+ *
+ * Sub types
+ *  - **BSON.BSON_BINARY_SUBTYPE_DEFAULT**, default BSON type.
+ *  - **BSON.BSON_BINARY_SUBTYPE_FUNCTION**, BSON function type.
+ *  - **BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY**, BSON byte array type.
+ *  - **BSON.BSON_BINARY_SUBTYPE_UUID**, BSON uuid type.
+ *  - **BSON.BSON_BINARY_SUBTYPE_MD5**, BSON md5 type.
+ *  - **BSON.BSON_BINARY_SUBTYPE_USER_DEFINED**, BSON user defined type.
+ *
+ * @class
+ * @param {Buffer} buffer a buffer object containing the binary data.
+ * @param {Number} [subType] the option binary type.
+ * @return {Binary}
+ */
+function Binary(buffer, subType) {
+  if (!(this instanceof Binary)) return new Binary(buffer, subType);
+
+  if (
+    buffer != null &&
+    !(typeof buffer === 'string') &&
+    !Buffer.isBuffer(buffer) &&
+    !(buffer instanceof Uint8Array) &&
+    !Array.isArray(buffer)
+  ) {
+    throw new Error('only String, Buffer, Uint8Array or Array accepted');
+  }
+
+  this._bsontype = 'Binary';
+
+  if (buffer instanceof Number) {
+    this.sub_type = buffer;
+    this.position = 0;
+  } else {
+    this.sub_type = subType == null ? BSON_BINARY_SUBTYPE_DEFAULT : subType;
+    this.position = 0;
+  }
+
+  if (buffer != null && !(buffer instanceof Number)) {
+    // Only accept Buffer, Uint8Array or Arrays
+    if (typeof buffer === 'string') {
+      // Different ways of writing the length of the string for the different types
+      if (typeof Buffer !== 'undefined') {
+        this.buffer = utils.toBuffer(buffer);
+      } else if (
+        typeof Uint8Array !== 'undefined' ||
+        Object.prototype.toString.call(buffer) === '[object Array]'
+      ) {
+        this.buffer = writeStringToArray(buffer);
+      } else {
+        throw new Error('only String, Buffer, Uint8Array or Array accepted');
+      }
+    } else {
+      this.buffer = buffer;
+    }
+    this.position = buffer.length;
+  } else {
+    if (typeof Buffer !== 'undefined') {
+      this.buffer = utils.allocBuffer(Binary.BUFFER_SIZE);
+    } else if (typeof Uint8Array !== 'undefined') {
+      this.buffer = new Uint8Array(new ArrayBuffer(Binary.BUFFER_SIZE));
+    } else {
+      this.buffer = new Array(Binary.BUFFER_SIZE);
+    }
+    // Set position to start of buffer
+    this.position = 0;
+  }
+}
+
+/**
+ * Updates this binary with byte_value.
+ *
+ * @method
+ * @param {string} byte_value a single byte we wish to write.
+ */
+Binary.prototype.put = function put(byte_value) {
+  // If it's a string and a has more than one character throw an error
+  if (byte_value['length'] != null && typeof byte_value !== 'number' && byte_value.length !== 1)
+    throw new Error('only accepts single character String, Uint8Array or Array');
+  if ((typeof byte_value !== 'number' && byte_value < 0) || byte_value > 255)
+    throw new Error('only accepts number in a valid unsigned byte range 0-255');
+
+  // Decode the byte value once
+  var decoded_byte = null;
+  if (typeof byte_value === 'string') {
+    decoded_byte = byte_value.charCodeAt(0);
+  } else if (byte_value['length'] != null) {
+    decoded_byte = byte_value[0];
+  } else {
+    decoded_byte = byte_value;
+  }
+
+  if (this.buffer.length > this.position) {
+    this.buffer[this.position++] = decoded_byte;
+  } else {
+    if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) {
+      // Create additional overflow buffer
+      var buffer = utils.allocBuffer(Binary.BUFFER_SIZE + this.buffer.length);
+      // Combine the two buffers together
+      this.buffer.copy(buffer, 0, 0, this.buffer.length);
+      this.buffer = buffer;
+      this.buffer[this.position++] = decoded_byte;
+    } else {
+      buffer = null;
+      // Create a new buffer (typed or normal array)
+      if (Object.prototype.toString.call(this.buffer) === '[object Uint8Array]') {
+        buffer = new Uint8Array(new ArrayBuffer(Binary.BUFFER_SIZE + this.buffer.length));
+      } else {
+        buffer = new Array(Binary.BUFFER_SIZE + this.buffer.length);
+      }
+
+      // We need to copy all the content to the new array
+      for (var i = 0; i < this.buffer.length; i++) {
+        buffer[i] = this.buffer[i];
+      }
+
+      // Reassign the buffer
+      this.buffer = buffer;
+      // Write the byte
+      this.buffer[this.position++] = decoded_byte;
+    }
+  }
+};
+
+/**
+ * Writes a buffer or string to the binary.
+ *
+ * @method
+ * @param {(Buffer|string)} string a string or buffer to be written to the Binary BSON object.
+ * @param {number} offset specify the binary of where to write the content.
+ * @return {null}
+ */
+Binary.prototype.write = function write(string, offset) {
+  offset = typeof offset === 'number' ? offset : this.position;
+
+  // If the buffer is to small let's extend the buffer
+  if (this.buffer.length < offset + string.length) {
+    var buffer = null;
+    // If we are in node.js
+    if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) {
+      buffer = utils.allocBuffer(this.buffer.length + string.length);
+      this.buffer.copy(buffer, 0, 0, this.buffer.length);
+    } else if (Object.prototype.toString.call(this.buffer) === '[object Uint8Array]') {
+      // Create a new buffer
+      buffer = new Uint8Array(new ArrayBuffer(this.buffer.length + string.length));
+      // Copy the content
+      for (var i = 0; i < this.position; i++) {
+        buffer[i] = this.buffer[i];
+      }
+    }
+
+    // Assign the new buffer
+    this.buffer = buffer;
+  }
+
+  if (typeof Buffer !== 'undefined' && Buffer.isBuffer(string) && Buffer.isBuffer(this.buffer)) {
+    string.copy(this.buffer, offset, 0, string.length);
+    this.position = offset + string.length > this.position ? offset + string.length : this.position;
+    // offset = string.length
+  } else if (
+    typeof Buffer !== 'undefined' &&
+    typeof string === 'string' &&
+    Buffer.isBuffer(this.buffer)
+  ) {
+    this.buffer.write(string, offset, 'binary');
+    this.position = offset + string.length > this.position ? offset + string.length : this.position;
+    // offset = string.length;
+  } else if (
+    Object.prototype.toString.call(string) === '[object Uint8Array]' ||
+    (Object.prototype.toString.call(string) === '[object Array]' && typeof string !== 'string')
+  ) {
+    for (i = 0; i < string.length; i++) {
+      this.buffer[offset++] = string[i];
+    }
+
+    this.position = offset > this.position ? offset : this.position;
+  } else if (typeof string === 'string') {
+    for (i = 0; i < string.length; i++) {
+      this.buffer[offset++] = string.charCodeAt(i);
+    }
+
+    this.position = offset > this.position ? offset : this.position;
+  }
+};
+
+/**
+ * Reads **length** bytes starting at **position**.
+ *
+ * @method
+ * @param {number} position read from the given position in the Binary.
+ * @param {number} length the number of bytes to read.
+ * @return {Buffer}
+ */
+Binary.prototype.read = function read(position, length) {
+  length = length && length > 0 ? length : this.position;
+
+  // Let's return the data based on the type we have
+  if (this.buffer['slice']) {
+    return this.buffer.slice(position, position + length);
+  } else {
+    // Create a buffer to keep the result
+    var buffer =
+      typeof Uint8Array !== 'undefined'
+        ? new Uint8Array(new ArrayBuffer(length))
+        : new Array(length);
+    for (var i = 0; i < length; i++) {
+      buffer[i] = this.buffer[position++];
+    }
+  }
+  // Return the buffer
+  return buffer;
+};
+
+/**
+ * Returns the value of this binary as a string.
+ *
+ * @method
+ * @return {string}
+ */
+Binary.prototype.value = function value(asRaw) {
+  asRaw = asRaw == null ? false : asRaw;
+
+  // Optimize to serialize for the situation where the data == size of buffer
+  if (
+    asRaw &&
+    typeof Buffer !== 'undefined' &&
+    Buffer.isBuffer(this.buffer) &&
+    this.buffer.length === this.position
+  )
+    return this.buffer;
+
+  // If it's a node.js buffer object
+  if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) {
+    return asRaw
+      ? this.buffer.slice(0, this.position)
+      : this.buffer.toString('binary', 0, this.position);
+  } else {
+    if (asRaw) {
+      // we support the slice command use it
+      if (this.buffer['slice'] != null) {
+        return this.buffer.slice(0, this.position);
+      } else {
+        // Create a new buffer to copy content to
+        var newBuffer =
+          Object.prototype.toString.call(this.buffer) === '[object Uint8Array]'
+            ? new Uint8Array(new ArrayBuffer(this.position))
+            : new Array(this.position);
+        // Copy content
+        for (var i = 0; i < this.position; i++) {
+          newBuffer[i] = this.buffer[i];
+        }
+        // Return the buffer
+        return newBuffer;
+      }
+    } else {
+      return convertArraytoUtf8BinaryString(this.buffer, 0, this.position);
+    }
+  }
+};
+
+/**
+ * Length.
+ *
+ * @method
+ * @return {number} the length of the binary.
+ */
+Binary.prototype.length = function length() {
+  return this.position;
+};
+
+/**
+ * @ignore
+ */
+Binary.prototype.toJSON = function() {
+  return this.buffer != null ? this.buffer.toString('base64') : '';
+};
+
+/**
+ * @ignore
+ */
+Binary.prototype.toString = function(format) {
+  return this.buffer != null ? this.buffer.slice(0, this.position).toString(format) : '';
+};
+
+/**
+ * Binary default subtype
+ * @ignore
+ */
+var BSON_BINARY_SUBTYPE_DEFAULT = 0;
+
+/**
+ * @ignore
+ */
+var writeStringToArray = function(data) {
+  // Create a buffer
+  var buffer =
+    typeof Uint8Array !== 'undefined'
+      ? new Uint8Array(new ArrayBuffer(data.length))
+      : new Array(data.length);
+  // Write the content to the buffer
+  for (var i = 0; i < data.length; i++) {
+    buffer[i] = data.charCodeAt(i);
+  }
+  // Write the string to the buffer
+  return buffer;
+};
+
+/**
+ * Convert Array ot Uint8Array to Binary String
+ *
+ * @ignore
+ */
+var convertArraytoUtf8BinaryString = function(byteArray, startIndex, endIndex) {
+  var result = '';
+  for (var i = startIndex; i < endIndex; i++) {
+    result = result + String.fromCharCode(byteArray[i]);
+  }
+  return result;
+};
+
+Binary.BUFFER_SIZE = 256;
+
+/**
+ * Default BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_DEFAULT = 0;
+/**
+ * Function BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_FUNCTION = 1;
+/**
+ * Byte Array BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_BYTE_ARRAY = 2;
+/**
+ * OLD UUID BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_UUID_OLD = 3;
+/**
+ * UUID BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_UUID = 4;
+/**
+ * MD5 BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_MD5 = 5;
+/**
+ * User BSON type
+ *
+ * @classconstant SUBTYPE_DEFAULT
+ **/
+Binary.SUBTYPE_USER_DEFINED = 128;
+
+/**
+ * Expose.
+ */
+module.exports = Binary;
+module.exports.Binary = Binary;
diff --git a/node_modules/bson/lib/bson/bson.js b/node_modules/bson/lib/bson/bson.js
new file mode 100644
index 0000000..912c5b9
--- /dev/null
+++ b/node_modules/bson/lib/bson/bson.js
@@ -0,0 +1,386 @@
+'use strict';
+
+var Map = require('./map'),
+  Long = require('./long'),
+  Double = require('./double'),
+  Timestamp = require('./timestamp'),
+  ObjectID = require('./objectid'),
+  BSONRegExp = require('./regexp'),
+  Symbol = require('./symbol'),
+  Int32 = require('./int_32'),
+  Code = require('./code'),
+  Decimal128 = require('./decimal128'),
+  MinKey = require('./min_key'),
+  MaxKey = require('./max_key'),
+  DBRef = require('./db_ref'),
+  Binary = require('./binary');
+
+// Parts of the parser
+var deserialize = require('./parser/deserializer'),
+  serializer = require('./parser/serializer'),
+  calculateObjectSize = require('./parser/calculate_size'),
+  utils = require('./parser/utils');
+
+/**
+ * @ignore
+ * @api private
+ */
+// Default Max Size
+var MAXSIZE = 1024 * 1024 * 17;
+
+// Current Internal Temporary Serialization Buffer
+var buffer = utils.allocBuffer(MAXSIZE);
+
+var BSON = function() {};
+
+/**
+ * Serialize a Javascript object.
+ *
+ * @param {Object} object the Javascript object to serialize.
+ * @param {Boolean} [options.checkKeys] the serializer will check if keys are valid.
+ * @param {Boolean} [options.serializeFunctions=false] serialize the javascript functions **(default:false)**.
+ * @param {Boolean} [options.ignoreUndefined=true] ignore undefined fields **(default:true)**.
+ * @param {Number} [options.minInternalBufferSize=1024*1024*17] minimum size of the internal temporary serialization buffer **(default:1024*1024*17)**.
+ * @return {Buffer} returns the Buffer object containing the serialized object.
+ * @api public
+ */
+BSON.prototype.serialize = function serialize(object, options) {
+  options = options || {};
+  // Unpack the options
+  var checkKeys = typeof options.checkKeys === 'boolean' ? options.checkKeys : false;
+  var serializeFunctions =
+    typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false;
+  var ignoreUndefined =
+    typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : true;
+  var minInternalBufferSize =
+    typeof options.minInternalBufferSize === 'number' ? options.minInternalBufferSize : MAXSIZE;
+  
+  // Resize the internal serialization buffer if needed
+  if (buffer.length < minInternalBufferSize) {
+    buffer = utils.allocBuffer(minInternalBufferSize);
+  }
+
+  // Attempt to serialize
+  var serializationIndex = serializer(
+    buffer,
+    object,
+    checkKeys,
+    0,
+    0,
+    serializeFunctions,
+    ignoreUndefined,
+    []
+  );
+  // Create the final buffer
+  var finishedBuffer = utils.allocBuffer(serializationIndex);
+  // Copy into the finished buffer
+  buffer.copy(finishedBuffer, 0, 0, finishedBuffer.length);
+  // Return the buffer
+  return finishedBuffer;
+};
+
+/**
+ * Serialize a Javascript object using a predefined Buffer and index into the buffer, useful when pre-allocating the space for serialization.
+ *
+ * @param {Object} object the Javascript object to serialize.
+ * @param {Buffer} buffer the Buffer you pre-allocated to store the serialized BSON object.
+ * @param {Boolean} [options.checkKeys] the serializer will check if keys are valid.
+ * @param {Boolean} [options.serializeFunctions=false] serialize the javascript functions **(default:false)**.
+ * @param {Boolean} [options.ignoreUndefined=true] ignore undefined fields **(default:true)**.
+ * @param {Number} [options.index] the index in the buffer where we wish to start serializing into.
+ * @return {Number} returns the index pointing to the last written byte in the buffer.
+ * @api public
+ */
+BSON.prototype.serializeWithBufferAndIndex = function(object, finalBuffer, options) {
+  options = options || {};
+  // Unpack the options
+  var checkKeys = typeof options.checkKeys === 'boolean' ? options.checkKeys : false;
+  var serializeFunctions =
+    typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false;
+  var ignoreUndefined =
+    typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : true;
+  var startIndex = typeof options.index === 'number' ? options.index : 0;
+
+  // Attempt to serialize
+  var serializationIndex = serializer(
+    finalBuffer,
+    object,
+    checkKeys,
+    startIndex || 0,
+    0,
+    serializeFunctions,
+    ignoreUndefined
+  );
+
+  // Return the index
+  return serializationIndex - 1;
+};
+
+/**
+ * Deserialize data as BSON.
+ *
+ * @param {Buffer} buffer the buffer containing the serialized set of BSON documents.
+ * @param {Object} [options.evalFunctions=false] evaluate functions in the BSON document scoped to the object deserialized.
+ * @param {Object} [options.cacheFunctions=false] cache evaluated functions for reuse.
+ * @param {Object} [options.cacheFunctionsCrc32=false] use a crc32 code for caching, otherwise use the string of the function.
+ * @param {Object} [options.promoteLongs=true] when deserializing a Long will fit it into a Number if it's smaller than 53 bits
+ * @param {Object} [options.promoteBuffers=false] when deserializing a Binary will return it as a node.js Buffer instance.
+ * @param {Object} [options.promoteValues=false] when deserializing will promote BSON values to their Node.js closest equivalent types.
+ * @param {Object} [options.fieldsAsRaw=null] allow to specify if there what fields we wish to return as unserialized raw buffer.
+ * @param {Object} [options.bsonRegExp=false] return BSON regular expressions as BSONRegExp instances.
+ * @return {Object} returns the deserialized Javascript Object.
+ * @api public
+ */
+BSON.prototype.deserialize = function(buffer, options) {
+  return deserialize(buffer, options);
+};
+
+/**
+ * Calculate the bson size for a passed in Javascript object.
+ *
+ * @param {Object} object the Javascript object to calculate the BSON byte size for.
+ * @param {Boolean} [options.serializeFunctions=false] serialize the javascript functions **(default:false)**.
+ * @param {Boolean} [options.ignoreUndefined=true] ignore undefined fields **(default:true)**.
+ * @return {Number} returns the number of bytes the BSON object will take up.
+ * @api public
+ */
+BSON.prototype.calculateObjectSize = function(object, options) {
+  options = options || {};
+
+  var serializeFunctions =
+    typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false;
+  var ignoreUndefined =
+    typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : true;
+
+  return calculateObjectSize(object, serializeFunctions, ignoreUndefined);
+};
+
+/**
+ * Deserialize stream data as BSON documents.
+ *
+ * @param {Buffer} data the buffer containing the serialized set of BSON documents.
+ * @param {Number} startIndex the start index in the data Buffer where the deserialization is to start.
+ * @param {Number} numberOfDocuments number of documents to deserialize.
+ * @param {Array} documents an array where to store the deserialized documents.
+ * @param {Number} docStartIndex the index in the documents array from where to start inserting documents.
+ * @param {Object} [options] additional options used for the deserialization.
+ * @param {Object} [options.evalFunctions=false] evaluate functions in the BSON document scoped to the object deserialized.
+ * @param {Object} [options.cacheFunctions=false] cache evaluated functions for reuse.
+ * @param {Object} [options.cacheFunctionsCrc32=false] use a crc32 code for caching, otherwise use the string of the function.
+ * @param {Object} [options.promoteLongs=true] when deserializing a Long will fit it into a Number if it's smaller than 53 bits
+ * @param {Object} [options.promoteBuffers=false] when deserializing a Binary will return it as a node.js Buffer instance.
+ * @param {Object} [options.promoteValues=false] when deserializing will promote BSON values to their Node.js closest equivalent types.
+ * @param {Object} [options.fieldsAsRaw=null] allow to specify if there what fields we wish to return as unserialized raw buffer.
+ * @param {Object} [options.bsonRegExp=false] return BSON regular expressions as BSONRegExp instances.
+ * @return {Number} returns the next index in the buffer after deserialization **x** numbers of documents.
+ * @api public
+ */
+BSON.prototype.deserializeStream = function(
+  data,
+  startIndex,
+  numberOfDocuments,
+  documents,
+  docStartIndex,
+  options
+) {
+  options = options != null ? options : {};
+  var index = startIndex;
+  // Loop over all documents
+  for (var i = 0; i < numberOfDocuments; i++) {
+    // Find size of the document
+    var size =
+      data[index] | (data[index + 1] << 8) | (data[index + 2] << 16) | (data[index + 3] << 24);
+    // Update options with index
+    options['index'] = index;
+    // Parse the document at this point
+    documents[docStartIndex + i] = this.deserialize(data, options);
+    // Adjust index by the document size
+    index = index + size;
+  }
+
+  // Return object containing end index of parsing and list of documents
+  return index;
+};
+
+/**
+ * @ignore
+ * @api private
+ */
+// BSON MAX VALUES
+BSON.BSON_INT32_MAX = 0x7fffffff;
+BSON.BSON_INT32_MIN = -0x80000000;
+
+BSON.BSON_INT64_MAX = Math.pow(2, 63) - 1;
+BSON.BSON_INT64_MIN = -Math.pow(2, 63);
+
+// JS MAX PRECISE VALUES
+BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double.
+BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double.
+
+// Internal long versions
+// var JS_INT_MAX_LONG = Long.fromNumber(0x20000000000000); // Any integer up to 2^53 can be precisely represented by a double.
+// var JS_INT_MIN_LONG = Long.fromNumber(-0x20000000000000); // Any integer down to -2^53 can be precisely represented by a double.
+
+/**
+ * Number BSON Type
+ *
+ * @classconstant BSON_DATA_NUMBER
+ **/
+BSON.BSON_DATA_NUMBER = 1;
+/**
+ * String BSON Type
+ *
+ * @classconstant BSON_DATA_STRING
+ **/
+BSON.BSON_DATA_STRING = 2;
+/**
+ * Object BSON Type
+ *
+ * @classconstant BSON_DATA_OBJECT
+ **/
+BSON.BSON_DATA_OBJECT = 3;
+/**
+ * Array BSON Type
+ *
+ * @classconstant BSON_DATA_ARRAY
+ **/
+BSON.BSON_DATA_ARRAY = 4;
+/**
+ * Binary BSON Type
+ *
+ * @classconstant BSON_DATA_BINARY
+ **/
+BSON.BSON_DATA_BINARY = 5;
+/**
+ * ObjectID BSON Type
+ *
+ * @classconstant BSON_DATA_OID
+ **/
+BSON.BSON_DATA_OID = 7;
+/**
+ * Boolean BSON Type
+ *
+ * @classconstant BSON_DATA_BOOLEAN
+ **/
+BSON.BSON_DATA_BOOLEAN = 8;
+/**
+ * Date BSON Type
+ *
+ * @classconstant BSON_DATA_DATE
+ **/
+BSON.BSON_DATA_DATE = 9;
+/**
+ * null BSON Type
+ *
+ * @classconstant BSON_DATA_NULL
+ **/
+BSON.BSON_DATA_NULL = 10;
+/**
+ * RegExp BSON Type
+ *
+ * @classconstant BSON_DATA_REGEXP
+ **/
+BSON.BSON_DATA_REGEXP = 11;
+/**
+ * Code BSON Type
+ *
+ * @classconstant BSON_DATA_CODE
+ **/
+BSON.BSON_DATA_CODE = 13;
+/**
+ * Symbol BSON Type
+ *
+ * @classconstant BSON_DATA_SYMBOL
+ **/
+BSON.BSON_DATA_SYMBOL = 14;
+/**
+ * Code with Scope BSON Type
+ *
+ * @classconstant BSON_DATA_CODE_W_SCOPE
+ **/
+BSON.BSON_DATA_CODE_W_SCOPE = 15;
+/**
+ * 32 bit Integer BSON Type
+ *
+ * @classconstant BSON_DATA_INT
+ **/
+BSON.BSON_DATA_INT = 16;
+/**
+ * Timestamp BSON Type
+ *
+ * @classconstant BSON_DATA_TIMESTAMP
+ **/
+BSON.BSON_DATA_TIMESTAMP = 17;
+/**
+ * Long BSON Type
+ *
+ * @classconstant BSON_DATA_LONG
+ **/
+BSON.BSON_DATA_LONG = 18;
+/**
+ * MinKey BSON Type
+ *
+ * @classconstant BSON_DATA_MIN_KEY
+ **/
+BSON.BSON_DATA_MIN_KEY = 0xff;
+/**
+ * MaxKey BSON Type
+ *
+ * @classconstant BSON_DATA_MAX_KEY
+ **/
+BSON.BSON_DATA_MAX_KEY = 0x7f;
+
+/**
+ * Binary Default Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_DEFAULT
+ **/
+BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0;
+/**
+ * Binary Function Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_FUNCTION
+ **/
+BSON.BSON_BINARY_SUBTYPE_FUNCTION = 1;
+/**
+ * Binary Byte Array Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_BYTE_ARRAY
+ **/
+BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY = 2;
+/**
+ * Binary UUID Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_UUID
+ **/
+BSON.BSON_BINARY_SUBTYPE_UUID = 3;
+/**
+ * Binary MD5 Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_MD5
+ **/
+BSON.BSON_BINARY_SUBTYPE_MD5 = 4;
+/**
+ * Binary User Defined Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_USER_DEFINED
+ **/
+BSON.BSON_BINARY_SUBTYPE_USER_DEFINED = 128;
+
+// Return BSON
+module.exports = BSON;
+module.exports.Code = Code;
+module.exports.Map = Map;
+module.exports.Symbol = Symbol;
+module.exports.BSON = BSON;
+module.exports.DBRef = DBRef;
+module.exports.Binary = Binary;
+module.exports.ObjectID = ObjectID;
+module.exports.Long = Long;
+module.exports.Timestamp = Timestamp;
+module.exports.Double = Double;
+module.exports.Int32 = Int32;
+module.exports.MinKey = MinKey;
+module.exports.MaxKey = MaxKey;
+module.exports.BSONRegExp = BSONRegExp;
+module.exports.Decimal128 = Decimal128;
diff --git a/node_modules/bson/lib/bson/code.js b/node_modules/bson/lib/bson/code.js
new file mode 100644
index 0000000..c2984cd
--- /dev/null
+++ b/node_modules/bson/lib/bson/code.js
@@ -0,0 +1,24 @@
+/**
+ * A class representation of the BSON Code type.
+ *
+ * @class
+ * @param {(string|function)} code a string or function.
+ * @param {Object} [scope] an optional scope for the function.
+ * @return {Code}
+ */
+var Code = function Code(code, scope) {
+  if (!(this instanceof Code)) return new Code(code, scope);
+  this._bsontype = 'Code';
+  this.code = code;
+  this.scope = scope;
+};
+
+/**
+ * @ignore
+ */
+Code.prototype.toJSON = function() {
+  return { scope: this.scope, code: this.code };
+};
+
+module.exports = Code;
+module.exports.Code = Code;
diff --git a/node_modules/bson/lib/bson/db_ref.js b/node_modules/bson/lib/bson/db_ref.js
new file mode 100644
index 0000000..f95795b
--- /dev/null
+++ b/node_modules/bson/lib/bson/db_ref.js
@@ -0,0 +1,32 @@
+/**
+ * A class representation of the BSON DBRef type.
+ *
+ * @class
+ * @param {string} namespace the collection name.
+ * @param {ObjectID} oid the reference ObjectID.
+ * @param {string} [db] optional db name, if omitted the reference is local to the current db.
+ * @return {DBRef}
+ */
+function DBRef(namespace, oid, db) {
+  if (!(this instanceof DBRef)) return new DBRef(namespace, oid, db);
+
+  this._bsontype = 'DBRef';
+  this.namespace = namespace;
+  this.oid = oid;
+  this.db = db;
+}
+
+/**
+ * @ignore
+ * @api private
+ */
+DBRef.prototype.toJSON = function() {
+  return {
+    $ref: this.namespace,
+    $id: this.oid,
+    $db: this.db == null ? '' : this.db
+  };
+};
+
+module.exports = DBRef;
+module.exports.DBRef = DBRef;
diff --git a/node_modules/bson/lib/bson/decimal128.js b/node_modules/bson/lib/bson/decimal128.js
new file mode 100644
index 0000000..924513f
--- /dev/null
+++ b/node_modules/bson/lib/bson/decimal128.js
@@ -0,0 +1,820 @@
+'use strict';
+
+var Long = require('./long');
+
+var PARSE_STRING_REGEXP = /^(\+|-)?(\d+|(\d*\.\d*))?(E|e)?([-+])?(\d+)?$/;
+var PARSE_INF_REGEXP = /^(\+|-)?(Infinity|inf)$/i;
+var PARSE_NAN_REGEXP = /^(\+|-)?NaN$/i;
+
+var EXPONENT_MAX = 6111;
+var EXPONENT_MIN = -6176;
+var EXPONENT_BIAS = 6176;
+var MAX_DIGITS = 34;
+
+// Nan value bits as 32 bit values (due to lack of longs)
+var NAN_BUFFER = [
+  0x7c,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00
+].reverse();
+// Infinity value bits 32 bit values (due to lack of longs)
+var INF_NEGATIVE_BUFFER = [
+  0xf8,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00
+].reverse();
+var INF_POSITIVE_BUFFER = [
+  0x78,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x00
+].reverse();
+
+var EXPONENT_REGEX = /^([-+])?(\d+)?$/;
+
+var utils = require('./parser/utils');
+
+// Detect if the value is a digit
+var isDigit = function(value) {
+  return !isNaN(parseInt(value, 10));
+};
+
+// Divide two uint128 values
+var divideu128 = function(value) {
+  var DIVISOR = Long.fromNumber(1000 * 1000 * 1000);
+  var _rem = Long.fromNumber(0);
+  var i = 0;
+
+  if (!value.parts[0] && !value.parts[1] && !value.parts[2] && !value.parts[3]) {
+    return { quotient: value, rem: _rem };
+  }
+
+  for (i = 0; i <= 3; i++) {
+    // Adjust remainder to match value of next dividend
+    _rem = _rem.shiftLeft(32);
+    // Add the divided to _rem
+    _rem = _rem.add(new Long(value.parts[i], 0));
+    value.parts[i] = _rem.div(DIVISOR).low_;
+    _rem = _rem.modulo(DIVISOR);
+  }
+
+  return { quotient: value, rem: _rem };
+};
+
+// Multiply two Long values and return the 128 bit value
+var multiply64x2 = function(left, right) {
+  if (!left && !right) {
+    return { high: Long.fromNumber(0), low: Long.fromNumber(0) };
+  }
+
+  var leftHigh = left.shiftRightUnsigned(32);
+  var leftLow = new Long(left.getLowBits(), 0);
+  var rightHigh = right.shiftRightUnsigned(32);
+  var rightLow = new Long(right.getLowBits(), 0);
+
+  var productHigh = leftHigh.multiply(rightHigh);
+  var productMid = leftHigh.multiply(rightLow);
+  var productMid2 = leftLow.multiply(rightHigh);
+  var productLow = leftLow.multiply(rightLow);
+
+  productHigh = productHigh.add(productMid.shiftRightUnsigned(32));
+  productMid = new Long(productMid.getLowBits(), 0)
+    .add(productMid2)
+    .add(productLow.shiftRightUnsigned(32));
+
+  productHigh = productHigh.add(productMid.shiftRightUnsigned(32));
+  productLow = productMid.shiftLeft(32).add(new Long(productLow.getLowBits(), 0));
+
+  // Return the 128 bit result
+  return { high: productHigh, low: productLow };
+};
+
+var lessThan = function(left, right) {
+  // Make values unsigned
+  var uhleft = left.high_ >>> 0;
+  var uhright = right.high_ >>> 0;
+
+  // Compare high bits first
+  if (uhleft < uhright) {
+    return true;
+  } else if (uhleft === uhright) {
+    var ulleft = left.low_ >>> 0;
+    var ulright = right.low_ >>> 0;
+    if (ulleft < ulright) return true;
+  }
+
+  return false;
+};
+
+// var longtoHex = function(value) {
+//   var buffer = utils.allocBuffer(8);
+//   var index = 0;
+//   // Encode the low 64 bits of the decimal
+//   // Encode low bits
+//   buffer[index++] = value.low_ & 0xff;
+//   buffer[index++] = (value.low_ >> 8) & 0xff;
+//   buffer[index++] = (value.low_ >> 16) & 0xff;
+//   buffer[index++] = (value.low_ >> 24) & 0xff;
+//   // Encode high bits
+//   buffer[index++] = value.high_ & 0xff;
+//   buffer[index++] = (value.high_ >> 8) & 0xff;
+//   buffer[index++] = (value.high_ >> 16) & 0xff;
+//   buffer[index++] = (value.high_ >> 24) & 0xff;
+//   return buffer.reverse().toString('hex');
+// };
+
+// var int32toHex = function(value) {
+//   var buffer = utils.allocBuffer(4);
+//   var index = 0;
+//   // Encode the low 64 bits of the decimal
+//   // Encode low bits
+//   buffer[index++] = value & 0xff;
+//   buffer[index++] = (value >> 8) & 0xff;
+//   buffer[index++] = (value >> 16) & 0xff;
+//   buffer[index++] = (value >> 24) & 0xff;
+//   return buffer.reverse().toString('hex');
+// };
+
+/**
+ * A class representation of the BSON Decimal128 type.
+ *
+ * @class
+ * @param {Buffer} bytes a buffer containing the raw Decimal128 bytes.
+ * @return {Double}
+ */
+var Decimal128 = function(bytes) {
+  this._bsontype = 'Decimal128';
+  this.bytes = bytes;
+};
+
+/**
+ * Create a Decimal128 instance from a string representation
+ *
+ * @method
+ * @param {string} string a numeric string representation.
+ * @return {Decimal128} returns a Decimal128 instance.
+ */
+Decimal128.fromString = function(string) {
+  // Parse state tracking
+  var isNegative = false;
+  var sawRadix = false;
+  var foundNonZero = false;
+
+  // Total number of significant digits (no leading or trailing zero)
+  var significantDigits = 0;
+  // Total number of significand digits read
+  var nDigitsRead = 0;
+  // Total number of digits (no leading zeros)
+  var nDigits = 0;
+  // The number of the digits after radix
+  var radixPosition = 0;
+  // The index of the first non-zero in *str*
+  var firstNonZero = 0;
+
+  // Digits Array
+  var digits = [0];
+  // The number of digits in digits
+  var nDigitsStored = 0;
+  // Insertion pointer for digits
+  var digitsInsert = 0;
+  // The index of the first non-zero digit
+  var firstDigit = 0;
+  // The index of the last digit
+  var lastDigit = 0;
+
+  // Exponent
+  var exponent = 0;
+  // loop index over array
+  var i = 0;
+  // The high 17 digits of the significand
+  var significandHigh = [0, 0];
+  // The low 17 digits of the significand
+  var significandLow = [0, 0];
+  // The biased exponent
+  var biasedExponent = 0;
+
+  // Read index
+  var index = 0;
+
+  // Trim the string
+  string = string.trim();
+
+  // Naively prevent against REDOS attacks.
+  // TODO: implementing a custom parsing for this, or refactoring the regex would yield
+  //       further gains.
+  if (string.length >= 7000) {
+    throw new Error('' + string + ' not a valid Decimal128 string');
+  }
+
+  // Results
+  var stringMatch = string.match(PARSE_STRING_REGEXP);
+  var infMatch = string.match(PARSE_INF_REGEXP);
+  var nanMatch = string.match(PARSE_NAN_REGEXP);
+
+  // Validate the string
+  if ((!stringMatch && !infMatch && !nanMatch) || string.length === 0) {
+    throw new Error('' + string + ' not a valid Decimal128 string');
+  }
+
+  // Check if we have an illegal exponent format
+  if (stringMatch && stringMatch[4] && stringMatch[2] === undefined) {
+    throw new Error('' + string + ' not a valid Decimal128 string');
+  }
+
+  // Get the negative or positive sign
+  if (string[index] === '+' || string[index] === '-') {
+    isNegative = string[index++] === '-';
+  }
+
+  // Check if user passed Infinity or NaN
+  if (!isDigit(string[index]) && string[index] !== '.') {
+    if (string[index] === 'i' || string[index] === 'I') {
+      return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
+    } else if (string[index] === 'N') {
+      return new Decimal128(utils.toBuffer(NAN_BUFFER));
+    }
+  }
+
+  // Read all the digits
+  while (isDigit(string[index]) || string[index] === '.') {
+    if (string[index] === '.') {
+      if (sawRadix) {
+        return new Decimal128(utils.toBuffer(NAN_BUFFER));
+      }
+
+      sawRadix = true;
+      index = index + 1;
+      continue;
+    }
+
+    if (nDigitsStored < 34) {
+      if (string[index] !== '0' || foundNonZero) {
+        if (!foundNonZero) {
+          firstNonZero = nDigitsRead;
+        }
+
+        foundNonZero = true;
+
+        // Only store 34 digits
+        digits[digitsInsert++] = parseInt(string[index], 10);
+        nDigitsStored = nDigitsStored + 1;
+      }
+    }
+
+    if (foundNonZero) {
+      nDigits = nDigits + 1;
+    }
+
+    if (sawRadix) {
+      radixPosition = radixPosition + 1;
+    }
+
+    nDigitsRead = nDigitsRead + 1;
+    index = index + 1;
+  }
+
+  if (sawRadix && !nDigitsRead) {
+    throw new Error('' + string + ' not a valid Decimal128 string');
+  }
+
+  // Read exponent if exists
+  if (string[index] === 'e' || string[index] === 'E') {
+    // Read exponent digits
+    var match = string.substr(++index).match(EXPONENT_REGEX);
+
+    // No digits read
+    if (!match || !match[2]) {
+      return new Decimal128(utils.toBuffer(NAN_BUFFER));
+    }
+
+    // Get exponent
+    exponent = parseInt(match[0], 10);
+
+    // Adjust the index
+    index = index + match[0].length;
+  }
+
+  // Return not a number
+  if (string[index]) {
+    return new Decimal128(utils.toBuffer(NAN_BUFFER));
+  }
+
+  // Done reading input
+  // Find first non-zero digit in digits
+  firstDigit = 0;
+
+  if (!nDigitsStored) {
+    firstDigit = 0;
+    lastDigit = 0;
+    digits[0] = 0;
+    nDigits = 1;
+    nDigitsStored = 1;
+    significantDigits = 0;
+  } else {
+    lastDigit = nDigitsStored - 1;
+    significantDigits = nDigits;
+
+    if (exponent !== 0 && significantDigits !== 1) {
+      while (string[firstNonZero + significantDigits - 1] === '0') {
+        significantDigits = significantDigits - 1;
+      }
+    }
+  }
+
+  // Normalization of exponent
+  // Correct exponent based on radix position, and shift significand as needed
+  // to represent user input
+
+  // Overflow prevention
+  if (exponent <= radixPosition && radixPosition - exponent > 1 << 14) {
+    exponent = EXPONENT_MIN;
+  } else {
+    exponent = exponent - radixPosition;
+  }
+
+  // Attempt to normalize the exponent
+  while (exponent > EXPONENT_MAX) {
+    // Shift exponent to significand and decrease
+    lastDigit = lastDigit + 1;
+
+    if (lastDigit - firstDigit > MAX_DIGITS) {
+      // Check if we have a zero then just hard clamp, otherwise fail
+      var digitsString = digits.join('');
+      if (digitsString.match(/^0+$/)) {
+        exponent = EXPONENT_MAX;
+        break;
+      } else {
+        return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
+      }
+    }
+
+    exponent = exponent - 1;
+  }
+
+  while (exponent < EXPONENT_MIN || nDigitsStored < nDigits) {
+    // Shift last digit
+    if (lastDigit === 0) {
+      exponent = EXPONENT_MIN;
+      significantDigits = 0;
+      break;
+    }
+
+    if (nDigitsStored < nDigits) {
+      // adjust to match digits not stored
+      nDigits = nDigits - 1;
+    } else {
+      // adjust to round
+      lastDigit = lastDigit - 1;
+    }
+
+    if (exponent < EXPONENT_MAX) {
+      exponent = exponent + 1;
+    } else {
+      // Check if we have a zero then just hard clamp, otherwise fail
+      digitsString = digits.join('');
+      if (digitsString.match(/^0+$/)) {
+        exponent = EXPONENT_MAX;
+        break;
+      } else {
+        return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
+      }
+    }
+  }
+
+  // Round
+  // We've normalized the exponent, but might still need to round.
+  if (lastDigit - firstDigit + 1 < significantDigits && string[significantDigits] !== '0') {
+    var endOfString = nDigitsRead;
+
+    // If we have seen a radix point, 'string' is 1 longer than we have
+    // documented with ndigits_read, so inc the position of the first nonzero
+    // digit and the position that digits are read to.
+    if (sawRadix && exponent === EXPONENT_MIN) {
+      firstNonZero = firstNonZero + 1;
+      endOfString = endOfString + 1;
+    }
+
+    var roundDigit = parseInt(string[firstNonZero + lastDigit + 1], 10);
+    var roundBit = 0;
+
+    if (roundDigit >= 5) {
+      roundBit = 1;
+
+      if (roundDigit === 5) {
+        roundBit = digits[lastDigit] % 2 === 1;
+
+        for (i = firstNonZero + lastDigit + 2; i < endOfString; i++) {
+          if (parseInt(string[i], 10)) {
+            roundBit = 1;
+            break;
+          }
+        }
+      }
+    }
+
+    if (roundBit) {
+      var dIdx = lastDigit;
+
+      for (; dIdx >= 0; dIdx--) {
+        if (++digits[dIdx] > 9) {
+          digits[dIdx] = 0;
+
+          // overflowed most significant digit
+          if (dIdx === 0) {
+            if (exponent < EXPONENT_MAX) {
+              exponent = exponent + 1;
+              digits[dIdx] = 1;
+            } else {
+              return new Decimal128(
+                utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)
+              );
+            }
+          }
+        } else {
+          break;
+        }
+      }
+    }
+  }
+
+  // Encode significand
+  // The high 17 digits of the significand
+  significandHigh = Long.fromNumber(0);
+  // The low 17 digits of the significand
+  significandLow = Long.fromNumber(0);
+
+  // read a zero
+  if (significantDigits === 0) {
+    significandHigh = Long.fromNumber(0);
+    significandLow = Long.fromNumber(0);
+  } else if (lastDigit - firstDigit < 17) {
+    dIdx = firstDigit;
+    significandLow = Long.fromNumber(digits[dIdx++]);
+    significandHigh = new Long(0, 0);
+
+    for (; dIdx <= lastDigit; dIdx++) {
+      significandLow = significandLow.multiply(Long.fromNumber(10));
+      significandLow = significandLow.add(Long.fromNumber(digits[dIdx]));
+    }
+  } else {
+    dIdx = firstDigit;
+    significandHigh = Long.fromNumber(digits[dIdx++]);
+
+    for (; dIdx <= lastDigit - 17; dIdx++) {
+      significandHigh = significandHigh.multiply(Long.fromNumber(10));
+      significandHigh = significandHigh.add(Long.fromNumber(digits[dIdx]));
+    }
+
+    significandLow = Long.fromNumber(digits[dIdx++]);
+
+    for (; dIdx <= lastDigit; dIdx++) {
+      significandLow = significandLow.multiply(Long.fromNumber(10));
+      significandLow = significandLow.add(Long.fromNumber(digits[dIdx]));
+    }
+  }
+
+  var significand = multiply64x2(significandHigh, Long.fromString('100000000000000000'));
+
+  significand.low = significand.low.add(significandLow);
+
+  if (lessThan(significand.low, significandLow)) {
+    significand.high = significand.high.add(Long.fromNumber(1));
+  }
+
+  // Biased exponent
+  biasedExponent = exponent + EXPONENT_BIAS;
+  var dec = { low: Long.fromNumber(0), high: Long.fromNumber(0) };
+
+  // Encode combination, exponent, and significand.
+  if (
+    significand.high
+      .shiftRightUnsigned(49)
+      .and(Long.fromNumber(1))
+      .equals(Long.fromNumber)
+  ) {
+    // Encode '11' into bits 1 to 3
+    dec.high = dec.high.or(Long.fromNumber(0x3).shiftLeft(61));
+    dec.high = dec.high.or(
+      Long.fromNumber(biasedExponent).and(Long.fromNumber(0x3fff).shiftLeft(47))
+    );
+    dec.high = dec.high.or(significand.high.and(Long.fromNumber(0x7fffffffffff)));
+  } else {
+    dec.high = dec.high.or(Long.fromNumber(biasedExponent & 0x3fff).shiftLeft(49));
+    dec.high = dec.high.or(significand.high.and(Long.fromNumber(0x1ffffffffffff)));
+  }
+
+  dec.low = significand.low;
+
+  // Encode sign
+  if (isNegative) {
+    dec.high = dec.high.or(Long.fromString('9223372036854775808'));
+  }
+
+  // Encode into a buffer
+  var buffer = utils.allocBuffer(16);
+  index = 0;
+
+  // Encode the low 64 bits of the decimal
+  // Encode low bits
+  buffer[index++] = dec.low.low_ & 0xff;
+  buffer[index++] = (dec.low.low_ >> 8) & 0xff;
+  buffer[index++] = (dec.low.low_ >> 16) & 0xff;
+  buffer[index++] = (dec.low.low_ >> 24) & 0xff;
+  // Encode high bits
+  buffer[index++] = dec.low.high_ & 0xff;
+  buffer[index++] = (dec.low.high_ >> 8) & 0xff;
+  buffer[index++] = (dec.low.high_ >> 16) & 0xff;
+  buffer[index++] = (dec.low.high_ >> 24) & 0xff;
+
+  // Encode the high 64 bits of the decimal
+  // Encode low bits
+  buffer[index++] = dec.high.low_ & 0xff;
+  buffer[index++] = (dec.high.low_ >> 8) & 0xff;
+  buffer[index++] = (dec.high.low_ >> 16) & 0xff;
+  buffer[index++] = (dec.high.low_ >> 24) & 0xff;
+  // Encode high bits
+  buffer[index++] = dec.high.high_ & 0xff;
+  buffer[index++] = (dec.high.high_ >> 8) & 0xff;
+  buffer[index++] = (dec.high.high_ >> 16) & 0xff;
+  buffer[index++] = (dec.high.high_ >> 24) & 0xff;
+
+  // Return the new Decimal128
+  return new Decimal128(buffer);
+};
+
+// Extract least significant 5 bits
+var COMBINATION_MASK = 0x1f;
+// Extract least significant 14 bits
+var EXPONENT_MASK = 0x3fff;
+// Value of combination field for Inf
+var COMBINATION_INFINITY = 30;
+// Value of combination field for NaN
+var COMBINATION_NAN = 31;
+// Value of combination field for NaN
+// var COMBINATION_SNAN = 32;
+// decimal128 exponent bias
+EXPONENT_BIAS = 6176;
+
+/**
+ * Create a string representation of the raw Decimal128 value
+ *
+ * @method
+ * @return {string} returns a Decimal128 string representation.
+ */
+Decimal128.prototype.toString = function() {
+  // Note: bits in this routine are referred to starting at 0,
+  // from the sign bit, towards the coefficient.
+
+  // bits 0 - 31
+  var high;
+  // bits 32 - 63
+  var midh;
+  // bits 64 - 95
+  var midl;
+  // bits 96 - 127
+  var low;
+  // bits 1 - 5
+  var combination;
+  // decoded biased exponent (14 bits)
+  var biased_exponent;
+  // the number of significand digits
+  var significand_digits = 0;
+  // the base-10 digits in the significand
+  var significand = new Array(36);
+  for (var i = 0; i < significand.length; i++) significand[i] = 0;
+  // read pointer into significand
+  var index = 0;
+
+  // unbiased exponent
+  var exponent;
+  // the exponent if scientific notation is used
+  var scientific_exponent;
+
+  // true if the number is zero
+  var is_zero = false;
+
+  // the most signifcant significand bits (50-46)
+  var significand_msb;
+  // temporary storage for significand decoding
+  var significand128 = { parts: new Array(4) };
+  // indexing variables
+  i;
+  var j, k;
+
+  // Output string
+  var string = [];
+
+  // Unpack index
+  index = 0;
+
+  // Buffer reference
+  var buffer = this.bytes;
+
+  // Unpack the low 64bits into a long
+  low =
+    buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);
+  midl =
+    buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);
+
+  // Unpack the high 64bits into a long
+  midh =
+    buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);
+  high =
+    buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);
+
+  // Unpack index
+  index = 0;
+
+  // Create the state of the decimal
+  var dec = {
+    low: new Long(low, midl),
+    high: new Long(midh, high)
+  };
+
+  if (dec.high.lessThan(Long.ZERO)) {
+    string.push('-');
+  }
+
+  // Decode combination field and exponent
+  combination = (high >> 26) & COMBINATION_MASK;
+
+  if (combination >> 3 === 3) {
+    // Check for 'special' values
+    if (combination === COMBINATION_INFINITY) {
+      return string.join('') + 'Infinity';
+    } else if (combination === COMBINATION_NAN) {
+      return 'NaN';
+    } else {
+      biased_exponent = (high >> 15) & EXPONENT_MASK;
+      significand_msb = 0x08 + ((high >> 14) & 0x01);
+    }
+  } else {
+    significand_msb = (high >> 14) & 0x07;
+    biased_exponent = (high >> 17) & EXPONENT_MASK;
+  }
+
+  exponent = biased_exponent - EXPONENT_BIAS;
+
+  // Create string of significand digits
+
+  // Convert the 114-bit binary number represented by
+  // (significand_high, significand_low) to at most 34 decimal
+  // digits through modulo and division.
+  significand128.parts[0] = (high & 0x3fff) + ((significand_msb & 0xf) << 14);
+  significand128.parts[1] = midh;
+  significand128.parts[2] = midl;
+  significand128.parts[3] = low;
+
+  if (
+    significand128.parts[0] === 0 &&
+    significand128.parts[1] === 0 &&
+    significand128.parts[2] === 0 &&
+    significand128.parts[3] === 0
+  ) {
+    is_zero = true;
+  } else {
+    for (k = 3; k >= 0; k--) {
+      var least_digits = 0;
+      // Peform the divide
+      var result = divideu128(significand128);
+      significand128 = result.quotient;
+      least_digits = result.rem.low_;
+
+      // We now have the 9 least significant digits (in base 2).
+      // Convert and output to string.
+      if (!least_digits) continue;
+
+      for (j = 8; j >= 0; j--) {
+        // significand[k * 9 + j] = Math.round(least_digits % 10);
+        significand[k * 9 + j] = least_digits % 10;
+        // least_digits = Math.round(least_digits / 10);
+        least_digits = Math.floor(least_digits / 10);
+      }
+    }
+  }
+
+  // Output format options:
+  // Scientific - [-]d.dddE(+/-)dd or [-]dE(+/-)dd
+  // Regular    - ddd.ddd
+
+  if (is_zero) {
+    significand_digits = 1;
+    significand[index] = 0;
+  } else {
+    significand_digits = 36;
+    i = 0;
+
+    while (!significand[index]) {
+      i++;
+      significand_digits = significand_digits - 1;
+      index = index + 1;
+    }
+  }
+
+  scientific_exponent = significand_digits - 1 + exponent;
+
+  // The scientific exponent checks are dictated by the string conversion
+  // specification and are somewhat arbitrary cutoffs.
+  //
+  // We must check exponent > 0, because if this is the case, the number
+  // has trailing zeros.  However, we *cannot* output these trailing zeros,
+  // because doing so would change the precision of the value, and would
+  // change stored data if the string converted number is round tripped.
+
+  if (scientific_exponent >= 34 || scientific_exponent <= -7 || exponent > 0) {
+    // Scientific format
+    string.push(significand[index++]);
+    significand_digits = significand_digits - 1;
+
+    if (significand_digits) {
+      string.push('.');
+    }
+
+    for (i = 0; i < significand_digits; i++) {
+      string.push(significand[index++]);
+    }
+
+    // Exponent
+    string.push('E');
+    if (scientific_exponent > 0) {
+      string.push('+' + scientific_exponent);
+    } else {
+      string.push(scientific_exponent);
+    }
+  } else {
+    // Regular format with no decimal place
+    if (exponent >= 0) {
+      for (i = 0; i < significand_digits; i++) {
+        string.push(significand[index++]);
+      }
+    } else {
+      var radix_position = significand_digits + exponent;
+
+      // non-zero digits before radix
+      if (radix_position > 0) {
+        for (i = 0; i < radix_position; i++) {
+          string.push(significand[index++]);
+        }
+      } else {
+        string.push('0');
+      }
+
+      string.push('.');
+      // add leading zeros after radix
+      while (radix_position++ < 0) {
+        string.push('0');
+      }
+
+      for (i = 0; i < significand_digits - Math.max(radix_position - 1, 0); i++) {
+        string.push(significand[index++]);
+      }
+    }
+  }
+
+  return string.join('');
+};
+
+Decimal128.prototype.toJSON = function() {
+  return { $numberDecimal: this.toString() };
+};
+
+module.exports = Decimal128;
+module.exports.Decimal128 = Decimal128;
diff --git a/node_modules/bson/lib/bson/double.js b/node_modules/bson/lib/bson/double.js
new file mode 100644
index 0000000..523c21f
--- /dev/null
+++ b/node_modules/bson/lib/bson/double.js
@@ -0,0 +1,33 @@
+/**
+ * A class representation of the BSON Double type.
+ *
+ * @class
+ * @param {number} value the number we want to represent as a double.
+ * @return {Double}
+ */
+function Double(value) {
+  if (!(this instanceof Double)) return new Double(value);
+
+  this._bsontype = 'Double';
+  this.value = value;
+}
+
+/**
+ * Access the number value.
+ *
+ * @method
+ * @return {number} returns the wrapped double number.
+ */
+Double.prototype.valueOf = function() {
+  return this.value;
+};
+
+/**
+ * @ignore
+ */
+Double.prototype.toJSON = function() {
+  return this.value;
+};
+
+module.exports = Double;
+module.exports.Double = Double;
diff --git a/node_modules/bson/lib/bson/float_parser.js b/node_modules/bson/lib/bson/float_parser.js
new file mode 100644
index 0000000..0054a2f
--- /dev/null
+++ b/node_modules/bson/lib/bson/float_parser.js
@@ -0,0 +1,124 @@
+// Copyright (c) 2008, Fair Oaks Labs, Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//  * Redistributions of source code must retain the above copyright notice,
+//    this list of conditions and the following disclaimer.
+//
+//  * Redistributions in binary form must reproduce the above copyright notice,
+//    this list of conditions and the following disclaimer in the documentation
+//    and/or other materials provided with the distribution.
+//
+//  * Neither the name of Fair Oaks Labs, Inc. nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+//
+// Modifications to writeIEEE754 to support negative zeroes made by Brian White
+
+var readIEEE754 = function(buffer, offset, endian, mLen, nBytes) {
+  var e,
+    m,
+    bBE = endian === 'big',
+    eLen = nBytes * 8 - mLen - 1,
+    eMax = (1 << eLen) - 1,
+    eBias = eMax >> 1,
+    nBits = -7,
+    i = bBE ? 0 : nBytes - 1,
+    d = bBE ? 1 : -1,
+    s = buffer[offset + i];
+
+  i += d;
+
+  e = s & ((1 << -nBits) - 1);
+  s >>= -nBits;
+  nBits += eLen;
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);
+
+  m = e & ((1 << -nBits) - 1);
+  e >>= -nBits;
+  nBits += mLen;
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);
+
+  if (e === 0) {
+    e = 1 - eBias;
+  } else if (e === eMax) {
+    return m ? NaN : (s ? -1 : 1) * Infinity;
+  } else {
+    m = m + Math.pow(2, mLen);
+    e = e - eBias;
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
+};
+
+var writeIEEE754 = function(buffer, value, offset, endian, mLen, nBytes) {
+  var e,
+    m,
+    c,
+    bBE = endian === 'big',
+    eLen = nBytes * 8 - mLen - 1,
+    eMax = (1 << eLen) - 1,
+    eBias = eMax >> 1,
+    rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0,
+    i = bBE ? nBytes - 1 : 0,
+    d = bBE ? -1 : 1,
+    s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;
+
+  value = Math.abs(value);
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0;
+    e = eMax;
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2);
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--;
+      c *= 2;
+    }
+    if (e + eBias >= 1) {
+      value += rt / c;
+    } else {
+      value += rt * Math.pow(2, 1 - eBias);
+    }
+    if (value * c >= 2) {
+      e++;
+      c /= 2;
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0;
+      e = eMax;
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen);
+      e = e + eBias;
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
+      e = 0;
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);
+
+  e = (e << mLen) | m;
+  eLen += mLen;
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);
+
+  buffer[offset + i - d] |= s * 128;
+};
+
+exports.readIEEE754 = readIEEE754;
+exports.writeIEEE754 = writeIEEE754;
diff --git a/node_modules/bson/lib/bson/int_32.js b/node_modules/bson/lib/bson/int_32.js
new file mode 100644
index 0000000..85dbdec
--- /dev/null
+++ b/node_modules/bson/lib/bson/int_32.js
@@ -0,0 +1,33 @@
+/**
+ * A class representation of a BSON Int32 type.
+ *
+ * @class
+ * @param {number} value the number we want to represent as an int32.
+ * @return {Int32}
+ */
+var Int32 = function(value) {
+  if (!(this instanceof Int32)) return new Int32(value);
+
+  this._bsontype = 'Int32';
+  this.value = value;
+};
+
+/**
+ * Access the number value.
+ *
+ * @method
+ * @return {number} returns the wrapped int32 number.
+ */
+Int32.prototype.valueOf = function() {
+  return this.value;
+};
+
+/**
+ * @ignore
+ */
+Int32.prototype.toJSON = function() {
+  return this.value;
+};
+
+module.exports = Int32;
+module.exports.Int32 = Int32;
diff --git a/node_modules/bson/lib/bson/long.js b/node_modules/bson/lib/bson/long.js
new file mode 100644
index 0000000..78215aa
--- /dev/null
+++ b/node_modules/bson/lib/bson/long.js
@@ -0,0 +1,851 @@
+// 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.
+//
+// Copyright 2009 Google Inc. All Rights Reserved
+
+/**
+ * Defines a Long class for representing a 64-bit two's-complement
+ * integer value, which faithfully simulates the behavior of a Java "Long". This
+ * implementation is derived from LongLib in GWT.
+ *
+ * Constructs a 64-bit two's-complement integer, given its low and high 32-bit
+ * values as *signed* integers.  See the from* functions below for more
+ * convenient ways of constructing Longs.
+ *
+ * The internal representation of a Long is the two given signed, 32-bit values.
+ * We use 32-bit pieces because these are the size of integers on which
+ * Javascript performs bit-operations.  For operations like addition and
+ * multiplication, we split each number into 16-bit pieces, which can easily be
+ * multiplied within Javascript's floating-point representation without overflow
+ * or change in sign.
+ *
+ * In the algorithms below, we frequently reduce the negative case to the
+ * positive case by negating the input(s) and then post-processing the result.
+ * Note that we must ALWAYS check specially whether those values are MIN_VALUE
+ * (-2^63) because -MIN_VALUE == MIN_VALUE (since 2^63 cannot be represented as
+ * a positive number, it overflows back into a negative).  Not handling this
+ * case would often result in infinite recursion.
+ *
+ * @class
+ * @param {number} low  the low (signed) 32 bits of the Long.
+ * @param {number} high the high (signed) 32 bits of the Long.
+ * @return {Long}
+ */
+function Long(low, high) {
+  if (!(this instanceof Long)) return new Long(low, high);
+
+  this._bsontype = 'Long';
+  /**
+   * @type {number}
+   * @ignore
+   */
+  this.low_ = low | 0; // force into 32 signed bits.
+
+  /**
+   * @type {number}
+   * @ignore
+   */
+  this.high_ = high | 0; // force into 32 signed bits.
+}
+
+/**
+ * Return the int value.
+ *
+ * @method
+ * @return {number} the value, assuming it is a 32-bit integer.
+ */
+Long.prototype.toInt = function() {
+  return this.low_;
+};
+
+/**
+ * Return the Number value.
+ *
+ * @method
+ * @return {number} the closest floating-point representation to this value.
+ */
+Long.prototype.toNumber = function() {
+  return this.high_ * Long.TWO_PWR_32_DBL_ + this.getLowBitsUnsigned();
+};
+
+/**
+ * Return the JSON value.
+ *
+ * @method
+ * @return {string} the JSON representation.
+ */
+Long.prototype.toJSON = function() {
+  return this.toString();
+};
+
+/**
+ * Return the String value.
+ *
+ * @method
+ * @param {number} [opt_radix] the radix in which the text should be written.
+ * @return {string} the textual representation of this value.
+ */
+Long.prototype.toString = function(opt_radix) {
+  var radix = opt_radix || 10;
+  if (radix < 2 || 36 < radix) {
+    throw Error('radix out of range: ' + radix);
+  }
+
+  if (this.isZero()) {
+    return '0';
+  }
+
+  if (this.isNegative()) {
+    if (this.equals(Long.MIN_VALUE)) {
+      // We need to change the Long value before it can be negated, so we remove
+      // the bottom-most digit in this base and then recurse to do the rest.
+      var radixLong = Long.fromNumber(radix);
+      var div = this.div(radixLong);
+      var rem = div.multiply(radixLong).subtract(this);
+      return div.toString(radix) + rem.toInt().toString(radix);
+    } else {
+      return '-' + this.negate().toString(radix);
+    }
+  }
+
+  // Do several (6) digits each time through the loop, so as to
+  // minimize the calls to the very expensive emulated div.
+  var radixToPower = Long.fromNumber(Math.pow(radix, 6));
+
+  rem = this;
+  var result = '';
+
+  while (!rem.isZero()) {
+    var remDiv = rem.div(radixToPower);
+    var intval = rem.subtract(remDiv.multiply(radixToPower)).toInt();
+    var digits = intval.toString(radix);
+
+    rem = remDiv;
+    if (rem.isZero()) {
+      return digits + result;
+    } else {
+      while (digits.length < 6) {
+        digits = '0' + digits;
+      }
+      result = '' + digits + result;
+    }
+  }
+};
+
+/**
+ * Return the high 32-bits value.
+ *
+ * @method
+ * @return {number} the high 32-bits as a signed value.
+ */
+Long.prototype.getHighBits = function() {
+  return this.high_;
+};
+
+/**
+ * Return the low 32-bits value.
+ *
+ * @method
+ * @return {number} the low 32-bits as a signed value.
+ */
+Long.prototype.getLowBits = function() {
+  return this.low_;
+};
+
+/**
+ * Return the low unsigned 32-bits value.
+ *
+ * @method
+ * @return {number} the low 32-bits as an unsigned value.
+ */
+Long.prototype.getLowBitsUnsigned = function() {
+  return this.low_ >= 0 ? this.low_ : Long.TWO_PWR_32_DBL_ + this.low_;
+};
+
+/**
+ * Returns the number of bits needed to represent the absolute value of this Long.
+ *
+ * @method
+ * @return {number} Returns the number of bits needed to represent the absolute value of this Long.
+ */
+Long.prototype.getNumBitsAbs = function() {
+  if (this.isNegative()) {
+    if (this.equals(Long.MIN_VALUE)) {
+      return 64;
+    } else {
+      return this.negate().getNumBitsAbs();
+    }
+  } else {
+    var val = this.high_ !== 0 ? this.high_ : this.low_;
+    for (var bit = 31; bit > 0; bit--) {
+      if ((val & (1 << bit)) !== 0) {
+        break;
+      }
+    }
+    return this.high_ !== 0 ? bit + 33 : bit + 1;
+  }
+};
+
+/**
+ * Return whether this value is zero.
+ *
+ * @method
+ * @return {boolean} whether this value is zero.
+ */
+Long.prototype.isZero = function() {
+  return this.high_ === 0 && this.low_ === 0;
+};
+
+/**
+ * Return whether this value is negative.
+ *
+ * @method
+ * @return {boolean} whether this value is negative.
+ */
+Long.prototype.isNegative = function() {
+  return this.high_ < 0;
+};
+
+/**
+ * Return whether this value is odd.
+ *
+ * @method
+ * @return {boolean} whether this value is odd.
+ */
+Long.prototype.isOdd = function() {
+  return (this.low_ & 1) === 1;
+};
+
+/**
+ * Return whether this Long equals the other
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} whether this Long equals the other
+ */
+Long.prototype.equals = function(other) {
+  return this.high_ === other.high_ && this.low_ === other.low_;
+};
+
+/**
+ * Return whether this Long does not equal the other.
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} whether this Long does not equal the other.
+ */
+Long.prototype.notEquals = function(other) {
+  return this.high_ !== other.high_ || this.low_ !== other.low_;
+};
+
+/**
+ * Return whether this Long is less than the other.
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} whether this Long is less than the other.
+ */
+Long.prototype.lessThan = function(other) {
+  return this.compare(other) < 0;
+};
+
+/**
+ * Return whether this Long is less than or equal to the other.
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} whether this Long is less than or equal to the other.
+ */
+Long.prototype.lessThanOrEqual = function(other) {
+  return this.compare(other) <= 0;
+};
+
+/**
+ * Return whether this Long is greater than the other.
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} whether this Long is greater than the other.
+ */
+Long.prototype.greaterThan = function(other) {
+  return this.compare(other) > 0;
+};
+
+/**
+ * Return whether this Long is greater than or equal to the other.
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} whether this Long is greater than or equal to the other.
+ */
+Long.prototype.greaterThanOrEqual = function(other) {
+  return this.compare(other) >= 0;
+};
+
+/**
+ * Compares this Long with the given one.
+ *
+ * @method
+ * @param {Long} other Long to compare against.
+ * @return {boolean} 0 if they are the same, 1 if the this is greater, and -1 if the given one is greater.
+ */
+Long.prototype.compare = function(other) {
+  if (this.equals(other)) {
+    return 0;
+  }
+
+  var thisNeg = this.isNegative();
+  var otherNeg = other.isNegative();
+  if (thisNeg && !otherNeg) {
+    return -1;
+  }
+  if (!thisNeg && otherNeg) {
+    return 1;
+  }
+
+  // at this point, the signs are the same, so subtraction will not overflow
+  if (this.subtract(other).isNegative()) {
+    return -1;
+  } else {
+    return 1;
+  }
+};
+
+/**
+ * The negation of this value.
+ *
+ * @method
+ * @return {Long} the negation of this value.
+ */
+Long.prototype.negate = function() {
+  if (this.equals(Long.MIN_VALUE)) {
+    return Long.MIN_VALUE;
+  } else {
+    return this.not().add(Long.ONE);
+  }
+};
+
+/**
+ * Returns the sum of this and the given Long.
+ *
+ * @method
+ * @param {Long} other Long to add to this one.
+ * @return {Long} the sum of this and the given Long.
+ */
+Long.prototype.add = function(other) {
+  // Divide each number into 4 chunks of 16 bits, and then sum the chunks.
+
+  var a48 = this.high_ >>> 16;
+  var a32 = this.high_ & 0xffff;
+  var a16 = this.low_ >>> 16;
+  var a00 = this.low_ & 0xffff;
+
+  var b48 = other.high_ >>> 16;
+  var b32 = other.high_ & 0xffff;
+  var b16 = other.low_ >>> 16;
+  var b00 = other.low_ & 0xffff;
+
+  var c48 = 0,
+    c32 = 0,
+    c16 = 0,
+    c00 = 0;
+  c00 += a00 + b00;
+  c16 += c00 >>> 16;
+  c00 &= 0xffff;
+  c16 += a16 + b16;
+  c32 += c16 >>> 16;
+  c16 &= 0xffff;
+  c32 += a32 + b32;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c48 += a48 + b48;
+  c48 &= 0xffff;
+  return Long.fromBits((c16 << 16) | c00, (c48 << 16) | c32);
+};
+
+/**
+ * Returns the difference of this and the given Long.
+ *
+ * @method
+ * @param {Long} other Long to subtract from this.
+ * @return {Long} the difference of this and the given Long.
+ */
+Long.prototype.subtract = function(other) {
+  return this.add(other.negate());
+};
+
+/**
+ * Returns the product of this and the given Long.
+ *
+ * @method
+ * @param {Long} other Long to multiply with this.
+ * @return {Long} the product of this and the other.
+ */
+Long.prototype.multiply = function(other) {
+  if (this.isZero()) {
+    return Long.ZERO;
+  } else if (other.isZero()) {
+    return Long.ZERO;
+  }
+
+  if (this.equals(Long.MIN_VALUE)) {
+    return other.isOdd() ? Long.MIN_VALUE : Long.ZERO;
+  } else if (other.equals(Long.MIN_VALUE)) {
+    return this.isOdd() ? Long.MIN_VALUE : Long.ZERO;
+  }
+
+  if (this.isNegative()) {
+    if (other.isNegative()) {
+      return this.negate().multiply(other.negate());
+    } else {
+      return this.negate()
+        .multiply(other)
+        .negate();
+    }
+  } else if (other.isNegative()) {
+    return this.multiply(other.negate()).negate();
+  }
+
+  // If both Longs are small, use float multiplication
+  if (this.lessThan(Long.TWO_PWR_24_) && other.lessThan(Long.TWO_PWR_24_)) {
+    return Long.fromNumber(this.toNumber() * other.toNumber());
+  }
+
+  // Divide each Long into 4 chunks of 16 bits, and then add up 4x4 products.
+  // We can skip products that would overflow.
+
+  var a48 = this.high_ >>> 16;
+  var a32 = this.high_ & 0xffff;
+  var a16 = this.low_ >>> 16;
+  var a00 = this.low_ & 0xffff;
+
+  var b48 = other.high_ >>> 16;
+  var b32 = other.high_ & 0xffff;
+  var b16 = other.low_ >>> 16;
+  var b00 = other.low_ & 0xffff;
+
+  var c48 = 0,
+    c32 = 0,
+    c16 = 0,
+    c00 = 0;
+  c00 += a00 * b00;
+  c16 += c00 >>> 16;
+  c00 &= 0xffff;
+  c16 += a16 * b00;
+  c32 += c16 >>> 16;
+  c16 &= 0xffff;
+  c16 += a00 * b16;
+  c32 += c16 >>> 16;
+  c16 &= 0xffff;
+  c32 += a32 * b00;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c32 += a16 * b16;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c32 += a00 * b32;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c48 += a48 * b00 + a32 * b16 + a16 * b32 + a00 * b48;
+  c48 &= 0xffff;
+  return Long.fromBits((c16 << 16) | c00, (c48 << 16) | c32);
+};
+
+/**
+ * Returns this Long divided by the given one.
+ *
+ * @method
+ * @param {Long} other Long by which to divide.
+ * @return {Long} this Long divided by the given one.
+ */
+Long.prototype.div = function(other) {
+  if (other.isZero()) {
+    throw Error('division by zero');
+  } else if (this.isZero()) {
+    return Long.ZERO;
+  }
+
+  if (this.equals(Long.MIN_VALUE)) {
+    if (other.equals(Long.ONE) || other.equals(Long.NEG_ONE)) {
+      return Long.MIN_VALUE; // recall that -MIN_VALUE == MIN_VALUE
+    } else if (other.equals(Long.MIN_VALUE)) {
+      return Long.ONE;
+    } else {
+      // At this point, we have |other| >= 2, so |this/other| < |MIN_VALUE|.
+      var halfThis = this.shiftRight(1);
+      var approx = halfThis.div(other).shiftLeft(1);
+      if (approx.equals(Long.ZERO)) {
+        return other.isNegative() ? Long.ONE : Long.NEG_ONE;
+      } else {
+        var rem = this.subtract(other.multiply(approx));
+        var result = approx.add(rem.div(other));
+        return result;
+      }
+    }
+  } else if (other.equals(Long.MIN_VALUE)) {
+    return Long.ZERO;
+  }
+
+  if (this.isNegative()) {
+    if (other.isNegative()) {
+      return this.negate().div(other.negate());
+    } else {
+      return this.negate()
+        .div(other)
+        .negate();
+    }
+  } else if (other.isNegative()) {
+    return this.div(other.negate()).negate();
+  }
+
+  // Repeat the following until the remainder is less than other:  find a
+  // floating-point that approximates remainder / other *from below*, add this
+  // into the result, and subtract it from the remainder.  It is critical that
+  // the approximate value is less than or equal to the real value so that the
+  // remainder never becomes negative.
+  var res = Long.ZERO;
+  rem = this;
+  while (rem.greaterThanOrEqual(other)) {
+    // Approximate the result of division. This may be a little greater or
+    // smaller than the actual value.
+    approx = Math.max(1, Math.floor(rem.toNumber() / other.toNumber()));
+
+    // We will tweak the approximate result by changing it in the 48-th digit or
+    // the smallest non-fractional digit, whichever is larger.
+    var log2 = Math.ceil(Math.log(approx) / Math.LN2);
+    var delta = log2 <= 48 ? 1 : Math.pow(2, log2 - 48);
+
+    // Decrease the approximation until it is smaller than the remainder.  Note
+    // that if it is too large, the product overflows and is negative.
+    var approxRes = Long.fromNumber(approx);
+    var approxRem = approxRes.multiply(other);
+    while (approxRem.isNegative() || approxRem.greaterThan(rem)) {
+      approx -= delta;
+      approxRes = Long.fromNumber(approx);
+      approxRem = approxRes.multiply(other);
+    }
+
+    // We know the answer can't be zero... and actually, zero would cause
+    // infinite recursion since we would make no progress.
+    if (approxRes.isZero()) {
+      approxRes = Long.ONE;
+    }
+
+    res = res.add(approxRes);
+    rem = rem.subtract(approxRem);
+  }
+  return res;
+};
+
+/**
+ * Returns this Long modulo the given one.
+ *
+ * @method
+ * @param {Long} other Long by which to mod.
+ * @return {Long} this Long modulo the given one.
+ */
+Long.prototype.modulo = function(other) {
+  return this.subtract(this.div(other).multiply(other));
+};
+
+/**
+ * The bitwise-NOT of this value.
+ *
+ * @method
+ * @return {Long} the bitwise-NOT of this value.
+ */
+Long.prototype.not = function() {
+  return Long.fromBits(~this.low_, ~this.high_);
+};
+
+/**
+ * Returns the bitwise-AND of this Long and the given one.
+ *
+ * @method
+ * @param {Long} other the Long with which to AND.
+ * @return {Long} the bitwise-AND of this and the other.
+ */
+Long.prototype.and = function(other) {
+  return Long.fromBits(this.low_ & other.low_, this.high_ & other.high_);
+};
+
+/**
+ * Returns the bitwise-OR of this Long and the given one.
+ *
+ * @method
+ * @param {Long} other the Long with which to OR.
+ * @return {Long} the bitwise-OR of this and the other.
+ */
+Long.prototype.or = function(other) {
+  return Long.fromBits(this.low_ | other.low_, this.high_ | other.high_);
+};
+
+/**
+ * Returns the bitwise-XOR of this Long and the given one.
+ *
+ * @method
+ * @param {Long} other the Long with which to XOR.
+ * @return {Long} the bitwise-XOR of this and the other.
+ */
+Long.prototype.xor = function(other) {
+  return Long.fromBits(this.low_ ^ other.low_, this.high_ ^ other.high_);
+};
+
+/**
+ * Returns this Long with bits shifted to the left by the given amount.
+ *
+ * @method
+ * @param {number} numBits the number of bits by which to shift.
+ * @return {Long} this shifted to the left by the given amount.
+ */
+Long.prototype.shiftLeft = function(numBits) {
+  numBits &= 63;
+  if (numBits === 0) {
+    return this;
+  } else {
+    var low = this.low_;
+    if (numBits < 32) {
+      var high = this.high_;
+      return Long.fromBits(low << numBits, (high << numBits) | (low >>> (32 - numBits)));
+    } else {
+      return Long.fromBits(0, low << (numBits - 32));
+    }
+  }
+};
+
+/**
+ * Returns this Long with bits shifted to the right by the given amount.
+ *
+ * @method
+ * @param {number} numBits the number of bits by which to shift.
+ * @return {Long} this shifted to the right by the given amount.
+ */
+Long.prototype.shiftRight = function(numBits) {
+  numBits &= 63;
+  if (numBits === 0) {
+    return this;
+  } else {
+    var high = this.high_;
+    if (numBits < 32) {
+      var low = this.low_;
+      return Long.fromBits((low >>> numBits) | (high << (32 - numBits)), high >> numBits);
+    } else {
+      return Long.fromBits(high >> (numBits - 32), high >= 0 ? 0 : -1);
+    }
+  }
+};
+
+/**
+ * Returns this Long with bits shifted to the right by the given amount, with the new top bits matching the current sign bit.
+ *
+ * @method
+ * @param {number} numBits the number of bits by which to shift.
+ * @return {Long} this shifted to the right by the given amount, with zeros placed into the new leading bits.
+ */
+Long.prototype.shiftRightUnsigned = function(numBits) {
+  numBits &= 63;
+  if (numBits === 0) {
+    return this;
+  } else {
+    var high = this.high_;
+    if (numBits < 32) {
+      var low = this.low_;
+      return Long.fromBits((low >>> numBits) | (high << (32 - numBits)), high >>> numBits);
+    } else if (numBits === 32) {
+      return Long.fromBits(high, 0);
+    } else {
+      return Long.fromBits(high >>> (numBits - 32), 0);
+    }
+  }
+};
+
+/**
+ * Returns a Long representing the given (32-bit) integer value.
+ *
+ * @method
+ * @param {number} value the 32-bit integer in question.
+ * @return {Long} the corresponding Long value.
+ */
+Long.fromInt = function(value) {
+  if (-128 <= value && value < 128) {
+    var cachedObj = Long.INT_CACHE_[value];
+    if (cachedObj) {
+      return cachedObj;
+    }
+  }
+
+  var obj = new Long(value | 0, value < 0 ? -1 : 0);
+  if (-128 <= value && value < 128) {
+    Long.INT_CACHE_[value] = obj;
+  }
+  return obj;
+};
+
+/**
+ * Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned.
+ *
+ * @method
+ * @param {number} value the number in question.
+ * @return {Long} the corresponding Long value.
+ */
+Long.fromNumber = function(value) {
+  if (isNaN(value) || !isFinite(value)) {
+    return Long.ZERO;
+  } else if (value <= -Long.TWO_PWR_63_DBL_) {
+    return Long.MIN_VALUE;
+  } else if (value + 1 >= Long.TWO_PWR_63_DBL_) {
+    return Long.MAX_VALUE;
+  } else if (value < 0) {
+    return Long.fromNumber(-value).negate();
+  } else {
+    return new Long((value % Long.TWO_PWR_32_DBL_) | 0, (value / Long.TWO_PWR_32_DBL_) | 0);
+  }
+};
+
+/**
+ * Returns a Long representing the 64-bit integer that comes by concatenating the given high and low bits. Each is assumed to use 32 bits.
+ *
+ * @method
+ * @param {number} lowBits the low 32-bits.
+ * @param {number} highBits the high 32-bits.
+ * @return {Long} the corresponding Long value.
+ */
+Long.fromBits = function(lowBits, highBits) {
+  return new Long(lowBits, highBits);
+};
+
+/**
+ * Returns a Long representation of the given string, written using the given radix.
+ *
+ * @method
+ * @param {string} str the textual representation of the Long.
+ * @param {number} opt_radix the radix in which the text is written.
+ * @return {Long} the corresponding Long value.
+ */
+Long.fromString = function(str, opt_radix) {
+  if (str.length === 0) {
+    throw Error('number format error: empty string');
+  }
+
+  var radix = opt_radix || 10;
+  if (radix < 2 || 36 < radix) {
+    throw Error('radix out of range: ' + radix);
+  }
+
+  if (str.charAt(0) === '-') {
+    return Long.fromString(str.substring(1), radix).negate();
+  } else if (str.indexOf('-') >= 0) {
+    throw Error('number format error: interior "-" character: ' + str);
+  }
+
+  // Do several (8) digits each time through the loop, so as to
+  // minimize the calls to the very expensive emulated div.
+  var radixToPower = Long.fromNumber(Math.pow(radix, 8));
+
+  var result = Long.ZERO;
+  for (var i = 0; i < str.length; i += 8) {
+    var size = Math.min(8, str.length - i);
+    var value = parseInt(str.substring(i, i + size), radix);
+    if (size < 8) {
+      var power = Long.fromNumber(Math.pow(radix, size));
+      result = result.multiply(power).add(Long.fromNumber(value));
+    } else {
+      result = result.multiply(radixToPower);
+      result = result.add(Long.fromNumber(value));
+    }
+  }
+  return result;
+};
+
+// NOTE: Common constant values ZERO, ONE, NEG_ONE, etc. are defined below the
+// from* methods on which they depend.
+
+/**
+ * A cache of the Long representations of small integer values.
+ * @type {Object}
+ * @ignore
+ */
+Long.INT_CACHE_ = {};
+
+// NOTE: the compiler should inline these constant values below and then remove
+// these variables, so there should be no runtime penalty for these.
+
+/**
+ * Number used repeated below in calculations.  This must appear before the
+ * first call to any from* function below.
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_16_DBL_ = 1 << 16;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_24_DBL_ = 1 << 24;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_32_DBL_ = Long.TWO_PWR_16_DBL_ * Long.TWO_PWR_16_DBL_;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_31_DBL_ = Long.TWO_PWR_32_DBL_ / 2;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_48_DBL_ = Long.TWO_PWR_32_DBL_ * Long.TWO_PWR_16_DBL_;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_64_DBL_ = Long.TWO_PWR_32_DBL_ * Long.TWO_PWR_32_DBL_;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Long.TWO_PWR_63_DBL_ = Long.TWO_PWR_64_DBL_ / 2;
+
+/** @type {Long} */
+Long.ZERO = Long.fromInt(0);
+
+/** @type {Long} */
+Long.ONE = Long.fromInt(1);
+
+/** @type {Long} */
+Long.NEG_ONE = Long.fromInt(-1);
+
+/** @type {Long} */
+Long.MAX_VALUE = Long.fromBits(0xffffffff | 0, 0x7fffffff | 0);
+
+/** @type {Long} */
+Long.MIN_VALUE = Long.fromBits(0, 0x80000000 | 0);
+
+/**
+ * @type {Long}
+ * @ignore
+ */
+Long.TWO_PWR_24_ = Long.fromInt(1 << 24);
+
+/**
+ * Expose.
+ */
+module.exports = Long;
+module.exports.Long = Long;
diff --git a/node_modules/bson/lib/bson/map.js b/node_modules/bson/lib/bson/map.js
new file mode 100644
index 0000000..7edb4f2
--- /dev/null
+++ b/node_modules/bson/lib/bson/map.js
@@ -0,0 +1,128 @@
+'use strict';
+
+// We have an ES6 Map available, return the native instance
+if (typeof global.Map !== 'undefined') {
+  module.exports = global.Map;
+  module.exports.Map = global.Map;
+} else {
+  // We will return a polyfill
+  var Map = function(array) {
+    this._keys = [];
+    this._values = {};
+
+    for (var i = 0; i < array.length; i++) {
+      if (array[i] == null) continue; // skip null and undefined
+      var entry = array[i];
+      var key = entry[0];
+      var value = entry[1];
+      // Add the key to the list of keys in order
+      this._keys.push(key);
+      // Add the key and value to the values dictionary with a point
+      // to the location in the ordered keys list
+      this._values[key] = { v: value, i: this._keys.length - 1 };
+    }
+  };
+
+  Map.prototype.clear = function() {
+    this._keys = [];
+    this._values = {};
+  };
+
+  Map.prototype.delete = function(key) {
+    var value = this._values[key];
+    if (value == null) return false;
+    // Delete entry
+    delete this._values[key];
+    // Remove the key from the ordered keys list
+    this._keys.splice(value.i, 1);
+    return true;
+  };
+
+  Map.prototype.entries = function() {
+    var self = this;
+    var index = 0;
+
+    return {
+      next: function() {
+        var key = self._keys[index++];
+        return {
+          value: key !== undefined ? [key, self._values[key].v] : undefined,
+          done: key !== undefined ? false : true
+        };
+      }
+    };
+  };
+
+  Map.prototype.forEach = function(callback, self) {
+    self = self || this;
+
+    for (var i = 0; i < this._keys.length; i++) {
+      var key = this._keys[i];
+      // Call the forEach callback
+      callback.call(self, this._values[key].v, key, self);
+    }
+  };
+
+  Map.prototype.get = function(key) {
+    return this._values[key] ? this._values[key].v : undefined;
+  };
+
+  Map.prototype.has = function(key) {
+    return this._values[key] != null;
+  };
+
+  Map.prototype.keys = function() {
+    var self = this;
+    var index = 0;
+
+    return {
+      next: function() {
+        var key = self._keys[index++];
+        return {
+          value: key !== undefined ? key : undefined,
+          done: key !== undefined ? false : true
+        };
+      }
+    };
+  };
+
+  Map.prototype.set = function(key, value) {
+    if (this._values[key]) {
+      this._values[key].v = value;
+      return this;
+    }
+
+    // Add the key to the list of keys in order
+    this._keys.push(key);
+    // Add the key and value to the values dictionary with a point
+    // to the location in the ordered keys list
+    this._values[key] = { v: value, i: this._keys.length - 1 };
+    return this;
+  };
+
+  Map.prototype.values = function() {
+    var self = this;
+    var index = 0;
+
+    return {
+      next: function() {
+        var key = self._keys[index++];
+        return {
+          value: key !== undefined ? self._values[key].v : undefined,
+          done: key !== undefined ? false : true
+        };
+      }
+    };
+  };
+
+  // Last ismaster
+  Object.defineProperty(Map.prototype, 'size', {
+    enumerable: true,
+    get: function() {
+      return this._keys.length;
+    }
+  });
+
+  module.exports = Map;
+  module.exports.Map = Map;
+}
diff --git a/node_modules/bson/lib/bson/max_key.js b/node_modules/bson/lib/bson/max_key.js
new file mode 100644
index 0000000..eebca7b
--- /dev/null
+++ b/node_modules/bson/lib/bson/max_key.js
@@ -0,0 +1,14 @@
+/**
+ * A class representation of the BSON MaxKey type.
+ *
+ * @class
+ * @return {MaxKey} A MaxKey instance
+ */
+function MaxKey() {
+  if (!(this instanceof MaxKey)) return new MaxKey();
+
+  this._bsontype = 'MaxKey';
+}
+
+module.exports = MaxKey;
+module.exports.MaxKey = MaxKey;
diff --git a/node_modules/bson/lib/bson/min_key.js b/node_modules/bson/lib/bson/min_key.js
new file mode 100644
index 0000000..15f4522
--- /dev/null
+++ b/node_modules/bson/lib/bson/min_key.js
@@ -0,0 +1,14 @@
+/**
+ * A class representation of the BSON MinKey type.
+ *
+ * @class
+ * @return {MinKey} A MinKey instance
+ */
+function MinKey() {
+  if (!(this instanceof MinKey)) return new MinKey();
+
+  this._bsontype = 'MinKey';
+}
+
+module.exports = MinKey;
+module.exports.MinKey = MinKey;
diff --git a/node_modules/bson/lib/bson/objectid.js b/node_modules/bson/lib/bson/objectid.js
new file mode 100644
index 0000000..0ebcc03
--- /dev/null
+++ b/node_modules/bson/lib/bson/objectid.js
@@ -0,0 +1,392 @@
+// Custom inspect property name / symbol.
+var inspect = 'inspect';
+
+var utils = require('./parser/utils');
+
+/**
+ * Machine id.
+ *
+ * Create a random 3-byte value (i.e. unique for this
+ * process). Other drivers use a md5 of the machine id here, but
+ * that would mean an asyc call to gethostname, so we don't bother.
+ * @ignore
+ */
+var MACHINE_ID = parseInt(Math.random() * 0xffffff, 10);
+
+// Regular expression that checks for hex value
+var checkForHexRegExp = new RegExp('^[0-9a-fA-F]{24}$');
+
+// Check if buffer exists
+try {
+  if (Buffer && Buffer.from) {
+    var hasBufferType = true;
+    inspect = require('util').inspect.custom || 'inspect';
+  }
+} catch (err) {
+  hasBufferType = false;
+}
+
+/**
+* Create a new ObjectID instance
+*
+* @class
+* @param {(string|number)} id Can be a 24 byte hex string, 12 byte binary string or a Number.
+* @property {number} generationTime The generation time of this ObjectId instance
+* @return {ObjectID} instance of ObjectID.
+*/
+var ObjectID = function ObjectID(id) {
+  // Duck-typing to support ObjectId from different npm packages
+  if (id instanceof ObjectID) return id;
+  if (!(this instanceof ObjectID)) return new ObjectID(id);
+
+  this._bsontype = 'ObjectID';
+
+  // The most common usecase (blank id, new objectId instance)
+  if (id == null || typeof id === 'number') {
+    // Generate a new id
+    this.id = this.generate(id);
+    // If we are caching the hex string
+    if (ObjectID.cacheHexString) this.__id = this.toString('hex');
+    // Return the object
+    return;
+  }
+
+  // Check if the passed in id is valid
+  var valid = ObjectID.isValid(id);
+
+  // Throw an error if it's not a valid setup
+  if (!valid && id != null) {
+    throw new Error(
+      'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters'
+    );
+  } else if (valid && typeof id === 'string' && id.length === 24 && hasBufferType) {
+    return new ObjectID(utils.toBuffer(id, 'hex'));
+  } else if (valid && typeof id === 'string' && id.length === 24) {
+    return ObjectID.createFromHexString(id);
+  } else if (id != null && id.length === 12) {
+    // assume 12 byte string
+    this.id = id;
+  } else if (id != null && typeof id.toHexString === 'function') {
+    // Duck-typing to support ObjectId from different npm packages
+    return id;
+  } else {
+    throw new Error(
+      'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters'
+    );
+  }
+
+  if (ObjectID.cacheHexString) this.__id = this.toString('hex');
+};
+
+// Allow usage of ObjectId as well as ObjectID
+// var ObjectId = ObjectID;
+
+// Precomputed hex table enables speedy hex string conversion
+var hexTable = [];
+for (var i = 0; i < 256; i++) {
+  hexTable[i] = (i <= 15 ? '0' : '') + i.toString(16);
+}
+
+/**
+* Return the ObjectID id as a 24 byte hex string representation
+*
+* @method
+* @return {string} return the 24 byte hex string representation.
+*/
+ObjectID.prototype.toHexString = function() {
+  if (ObjectID.cacheHexString && this.__id) return this.__id;
+
+  var hexString = '';
+  if (!this.id || !this.id.length) {
+    throw new Error(
+      'invalid ObjectId, ObjectId.id must be either a string or a Buffer, but is [' +
+        JSON.stringify(this.id) +
+        ']'
+    );
+  }
+
+  if (this.id instanceof _Buffer) {
+    hexString = convertToHex(this.id);
+    if (ObjectID.cacheHexString) this.__id = hexString;
+    return hexString;
+  }
+
+  for (var i = 0; i < this.id.length; i++) {
+    hexString += hexTable[this.id.charCodeAt(i)];
+  }
+
+  if (ObjectID.cacheHexString) this.__id = hexString;
+  return hexString;
+};
+
+/**
+* Update the ObjectID index used in generating new ObjectID's on the driver
+*
+* @method
+* @return {number} returns next index value.
+* @ignore
+*/
+ObjectID.prototype.get_inc = function() {
+  return (ObjectID.index = (ObjectID.index + 1) % 0xffffff);
+};
+
+/**
+* Update the ObjectID index used in generating new ObjectID's on the driver
+*
+* @method
+* @return {number} returns next index value.
+* @ignore
+*/
+ObjectID.prototype.getInc = function() {
+  return this.get_inc();
+};
+
+/**
+* Generate a 12 byte id buffer used in ObjectID's
+*
+* @method
+* @param {number} [time] optional parameter allowing to pass in a second based timestamp.
+* @return {Buffer} return the 12 byte id buffer string.
+*/
+ObjectID.prototype.generate = function(time) {
+  if ('number' !== typeof time) {
+    time = ~~(Date.now() / 1000);
+  }
+
+  // Use pid
+  var pid =
+    (typeof process === 'undefined' || process.pid === 1
+      ? Math.floor(Math.random() * 100000)
+      : process.pid) % 0xffff;
+  var inc = this.get_inc();
+  // Buffer used
+  var buffer = utils.allocBuffer(12);
+  // Encode time
+  buffer[3] = time & 0xff;
+  buffer[2] = (time >> 8) & 0xff;
+  buffer[1] = (time >> 16) & 0xff;
+  buffer[0] = (time >> 24) & 0xff;
+  // Encode machine
+  buffer[6] = MACHINE_ID & 0xff;
+  buffer[5] = (MACHINE_ID >> 8) & 0xff;
+  buffer[4] = (MACHINE_ID >> 16) & 0xff;
+  // Encode pid
+  buffer[8] = pid & 0xff;
+  buffer[7] = (pid >> 8) & 0xff;
+  // Encode index
+  buffer[11] = inc & 0xff;
+  buffer[10] = (inc >> 8) & 0xff;
+  buffer[9] = (inc >> 16) & 0xff;
+  // Return the buffer
+  return buffer;
+};
+
+/**
+* Converts the id into a 24 byte hex string for printing
+*
+* @param {String} format The Buffer toString format parameter.
+* @return {String} return the 24 byte hex string representation.
+* @ignore
+*/
+ObjectID.prototype.toString = function(format) {
+  // Is the id a buffer then use the buffer toString method to return the format
+  if (this.id && this.id.copy) {
+    return this.id.toString(typeof format === 'string' ? format : 'hex');
+  }
+
+  // if(this.buffer )
+  return this.toHexString();
+};
+
+/**
+* Converts to a string representation of this Id.
+*
+* @return {String} return the 24 byte hex string representation.
+* @ignore
+*/
+ObjectID.prototype[inspect] = ObjectID.prototype.toString;
+
+/**
+* Converts to its JSON representation.
+*
+* @return {String} return the 24 byte hex string representation.
+* @ignore
+*/
+ObjectID.prototype.toJSON = function() {
+  return this.toHexString();
+};
+
+/**
+* Compares the equality of this ObjectID with `otherID`.
+*
+* @method
+* @param {object} otherID ObjectID instance to compare against.
+* @return {boolean} the result of comparing two ObjectID's
+*/
+ObjectID.prototype.equals = function equals(otherId) {
+  // var id;
+
+  if (otherId instanceof ObjectID) {
+    return this.toString() === otherId.toString();
+  } else if (
+    typeof otherId === 'string' &&
+    ObjectID.isValid(otherId) &&
+    otherId.length === 12 &&
+    this.id instanceof _Buffer
+  ) {
+    return otherId === this.id.toString('binary');
+  } else if (typeof otherId === 'string' && ObjectID.isValid(otherId) && otherId.length === 24) {
+    return otherId.toLowerCase() === this.toHexString();
+  } else if (typeof otherId === 'string' && ObjectID.isValid(otherId) && otherId.length === 12) {
+    return otherId === this.id;
+  } else if (otherId != null && (otherId instanceof ObjectID || otherId.toHexString)) {
+    return otherId.toHexString() === this.toHexString();
+  } else {
+    return false;
+  }
+};
+
+/**
+* Returns the generation date (accurate up to the second) that this ID was generated.
+*
+* @method
+* @return {date} the generation date
+*/
+ObjectID.prototype.getTimestamp = function() {
+  var timestamp = new Date();
+  var time = this.id[3] | (this.id[2] << 8) | (this.id[1] << 16) | (this.id[0] << 24);
+  timestamp.setTime(Math.floor(time) * 1000);
+  return timestamp;
+};
+
+/**
+* @ignore
+*/
+ObjectID.index = ~~(Math.random() * 0xffffff);
+
+/**
+* @ignore
+*/
+ObjectID.createPk = function createPk() {
+  return new ObjectID();
+};
+
+/**
+* Creates an ObjectID from a second based number, with the rest of the ObjectID zeroed out. Used for comparisons or sorting the ObjectID.
+*
+* @method
+* @param {number} time an integer number representing a number of seconds.
+* @return {ObjectID} return the created ObjectID
+*/
+ObjectID.createFromTime = function createFromTime(time) {
+  var buffer = utils.toBuffer([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
+  // Encode time into first 4 bytes
+  buffer[3] = time & 0xff;
+  buffer[2] = (time >> 8) & 0xff;
+  buffer[1] = (time >> 16) & 0xff;
+  buffer[0] = (time >> 24) & 0xff;
+  // Return the new objectId
+  return new ObjectID(buffer);
+};
+
+// Lookup tables
+//var encodeLookup = '0123456789abcdef'.split('');
+var decodeLookup = [];
+i = 0;
+while (i < 10) decodeLookup[0x30 + i] = i++;
+while (i < 16) decodeLookup[0x41 - 10 + i] = decodeLookup[0x61 - 10 + i] = i++;
+
+var _Buffer = Buffer;
+var convertToHex = function(bytes) {
+  return bytes.toString('hex');
+};
+
+/**
+* Creates an ObjectID from a hex string representation of an ObjectID.
+*
+* @method
+* @param {string} hexString create a ObjectID from a passed in 24 byte hexstring.
+* @return {ObjectID} return the created ObjectID
+*/
+ObjectID.createFromHexString = function createFromHexString(string) {
+  // Throw an error if it's not a valid setup
+  if (typeof string === 'undefined' || (string != null && string.length !== 24)) {
+    throw new Error(
+      'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters'
+    );
+  }
+
+  // Use Buffer.from method if available
+  if (hasBufferType) return new ObjectID(utils.toBuffer(string, 'hex'));
+
+  // Calculate lengths
+  var array = new _Buffer(12);
+  var n = 0;
+  var i = 0;
+
+  while (i < 24) {
+    array[n++] = (decodeLookup[string.charCodeAt(i++)] << 4) | decodeLookup[string.charCodeAt(i++)];
+  }
+
+  return new ObjectID(array);
+};
+
+/**
+* Checks if a value is a valid bson ObjectId
+*
+* @method
+* @return {boolean} return true if the value is a valid bson ObjectId, return false otherwise.
+*/
+ObjectID.isValid = function isValid(id) {
+  if (id == null) return false;
+
+  if (typeof id === 'number') {
+    return true;
+  }
+
+  if (typeof id === 'string') {
+    return id.length === 12 || (id.length === 24 && checkForHexRegExp.test(id));
+  }
+
+  if (id instanceof ObjectID) {
+    return true;
+  }
+
+  if (id instanceof _Buffer) {
+    return true;
+  }
+
+  // Duck-Typing detection of ObjectId like objects
+  if (
+      typeof id.toHexString === 'function' &&
+      (id.id instanceof _Buffer || typeof id.id === 'string')
+  ) {
+    return id.id.length === 12 || (id.id.length === 24 && checkForHexRegExp.test(id.id));
+  }
+
+  return false;
+};
+
+/**
+* @ignore
+*/
+Object.defineProperty(ObjectID.prototype, 'generationTime', {
+  enumerable: true,
+  get: function() {
+    return this.id[3] | (this.id[2] << 8) | (this.id[1] << 16) | (this.id[0] << 24);
+  },
+  set: function(value) {
+    // Encode time into first 4 bytes
+    this.id[3] = value & 0xff;
+    this.id[2] = (value >> 8) & 0xff;
+    this.id[1] = (value >> 16) & 0xff;
+    this.id[0] = (value >> 24) & 0xff;
+  }
+});
+
+/**
+ * Expose.
+ */
+module.exports = ObjectID;
+module.exports.ObjectID = ObjectID;
+module.exports.ObjectId = ObjectID;
diff --git a/node_modules/bson/lib/bson/parser/calculate_size.js b/node_modules/bson/lib/bson/parser/calculate_size.js
new file mode 100644
index 0000000..7e0026c
--- /dev/null
+++ b/node_modules/bson/lib/bson/parser/calculate_size.js
@@ -0,0 +1,255 @@
+'use strict';
+
+var Long = require('../long').Long,
+  Double = require('../double').Double,
+  Timestamp = require('../timestamp').Timestamp,
+  ObjectID = require('../objectid').ObjectID,
+  Symbol = require('../symbol').Symbol,
+  BSONRegExp = require('../regexp').BSONRegExp,
+  Code = require('../code').Code,
+  Decimal128 = require('../decimal128'),
+  MinKey = require('../min_key').MinKey,
+  MaxKey = require('../max_key').MaxKey,
+  DBRef = require('../db_ref').DBRef,
+  Binary = require('../binary').Binary;
+
+var normalizedFunctionString = require('./utils').normalizedFunctionString;
+
+// To ensure that 0.4 of node works correctly
+var isDate = function isDate(d) {
+  return typeof d === 'object' && Object.prototype.toString.call(d) === '[object Date]';
+};
+
+var calculateObjectSize = function calculateObjectSize(
+  object,
+  serializeFunctions,
+  ignoreUndefined
+) {
+  var totalLength = 4 + 1;
+
+  if (Array.isArray(object)) {
+    for (var i = 0; i < object.length; i++) {
+      totalLength += calculateElement(
+        i.toString(),
+        object[i],
+        serializeFunctions,
+        true,
+        ignoreUndefined
+      );
+    }
+  } else {
+    // If we have toBSON defined, override the current object
+    if (object.toBSON) {
+      object = object.toBSON();
+    }
+
+    // Calculate size
+    for (var key in object) {
+      totalLength += calculateElement(key, object[key], serializeFunctions, false, ignoreUndefined);
+    }
+  }
+
+  return totalLength;
+};
+
+/**
+ * @ignore
+ * @api private
+ */
+function calculateElement(name, value, serializeFunctions, isArray, ignoreUndefined) {
+  // If we have toBSON defined, override the current object
+  if (value && value.toBSON) {
+    value = value.toBSON();
+  }
+
+  switch (typeof value) {
+    case 'string':
+      return 1 + Buffer.byteLength(name, 'utf8') + 1 + 4 + Buffer.byteLength(value, 'utf8') + 1;
+    case 'number':
+      if (Math.floor(value) === value && value >= BSON.JS_INT_MIN && value <= BSON.JS_INT_MAX) {
+        if (value >= BSON.BSON_INT32_MIN && value <= BSON.BSON_INT32_MAX) {
+          // 32 bit
+          return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (4 + 1);
+        } else {
+          return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1);
+        }
+      } else {
+        // 64 bit
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1);
+      }
+    case 'undefined':
+      if (isArray || !ignoreUndefined)
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + 1;
+      return 0;
+    case 'boolean':
+      return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (1 + 1);
+    case 'object':
+      if (
+        value == null ||
+        value instanceof MinKey ||
+        value instanceof MaxKey ||
+        value['_bsontype'] === 'MinKey' ||
+        value['_bsontype'] === 'MaxKey'
+      ) {
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + 1;
+      } else if (value instanceof ObjectID || value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') {
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (12 + 1);
+      } else if (value instanceof Date || isDate(value)) {
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1);
+      } else if (typeof Buffer !== 'undefined' && Buffer.isBuffer(value)) {
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (1 + 4 + 1) + value.length
+        );
+      } else if (
+        value instanceof Long ||
+        value instanceof Double ||
+        value instanceof Timestamp ||
+        value['_bsontype'] === 'Long' ||
+        value['_bsontype'] === 'Double' ||
+        value['_bsontype'] === 'Timestamp'
+      ) {
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1);
+      } else if (value instanceof Decimal128 || value['_bsontype'] === 'Decimal128') {
+        return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (16 + 1);
+      } else if (value instanceof Code || value['_bsontype'] === 'Code') {
+        // Calculate size depending on the availability of a scope
+        if (value.scope != null && Object.keys(value.scope).length > 0) {
+          return (
+            (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+            1 +
+            4 +
+            4 +
+            Buffer.byteLength(value.code.toString(), 'utf8') +
+            1 +
+            calculateObjectSize(value.scope, serializeFunctions, ignoreUndefined)
+          );
+        } else {
+          return (
+            (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+            1 +
+            4 +
+            Buffer.byteLength(value.code.toString(), 'utf8') +
+            1
+          );
+        }
+      } else if (value instanceof Binary || value['_bsontype'] === 'Binary') {
+        // Check what kind of subtype we have
+        if (value.sub_type === Binary.SUBTYPE_BYTE_ARRAY) {
+          return (
+            (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+            (value.position + 1 + 4 + 1 + 4)
+          );
+        } else {
+          return (
+            (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (value.position + 1 + 4 + 1)
+          );
+        }
+      } else if (value instanceof Symbol || value['_bsontype'] === 'Symbol') {
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+          Buffer.byteLength(value.value, 'utf8') +
+          4 +
+          1 +
+          1
+        );
+      } else if (value instanceof DBRef || value['_bsontype'] === 'DBRef') {
+        // Set up correct object for serialization
+        var ordered_values = {
+          $ref: value.namespace,
+          $id: value.oid
+        };
+
+        // Add db reference if it exists
+        if (null != value.db) {
+          ordered_values['$db'] = value.db;
+        }
+
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+          1 +
+          calculateObjectSize(ordered_values, serializeFunctions, ignoreUndefined)
+        );
+      } else if (
+        value instanceof RegExp ||
+        Object.prototype.toString.call(value) === '[object RegExp]'
+      ) {
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+          1 +
+          Buffer.byteLength(value.source, 'utf8') +
+          1 +
+          (value.global ? 1 : 0) +
+          (value.ignoreCase ? 1 : 0) +
+          (value.multiline ? 1 : 0) +
+          1
+        );
+      } else if (value instanceof BSONRegExp || value['_bsontype'] === 'BSONRegExp') {
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+          1 +
+          Buffer.byteLength(value.pattern, 'utf8') +
+          1 +
+          Buffer.byteLength(value.options, 'utf8') +
+          1
+        );
+      } else {
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+          calculateObjectSize(value, serializeFunctions, ignoreUndefined) +
+          1
+        );
+      }
+    case 'function':
+      // WTF for 0.4.X where typeof /someregexp/ === 'function'
+      if (
+        value instanceof RegExp ||
+        Object.prototype.toString.call(value) === '[object RegExp]' ||
+        String.call(value) === '[object RegExp]'
+      ) {
+        return (
+          (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+          1 +
+          Buffer.byteLength(value.source, 'utf8') +
+          1 +
+          (value.global ? 1 : 0) +
+          (value.ignoreCase ? 1 : 0) +
+          (value.multiline ? 1 : 0) +
+          1
+        );
+      } else {
+        if (serializeFunctions && value.scope != null && Object.keys(value.scope).length > 0) {
+          return (
+            (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+            1 +
+            4 +
+            4 +
+            Buffer.byteLength(normalizedFunctionString(value), 'utf8') +
+            1 +
+            calculateObjectSize(value.scope, serializeFunctions, ignoreUndefined)
+          );
+        } else if (serializeFunctions) {
+          return (
+            (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) +
+            1 +
+            4 +
+            Buffer.byteLength(normalizedFunctionString(value), 'utf8') +
+            1
+          );
+        }
+      }
+  }
+
+  return 0;
+}
+
+var BSON = {};
+
+// BSON MAX VALUES
+BSON.BSON_INT32_MAX = 0x7fffffff;
+BSON.BSON_INT32_MIN = -0x80000000;
+
+// JS MAX PRECISE VALUES
+BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double.
+BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double.
+
+module.exports = calculateObjectSize;
diff --git a/node_modules/bson/lib/bson/parser/deserializer.js b/node_modules/bson/lib/bson/parser/deserializer.js
new file mode 100644
index 0000000..be3c865
--- /dev/null
+++ b/node_modules/bson/lib/bson/parser/deserializer.js
@@ -0,0 +1,782 @@
+'use strict';
+
+var Long = require('../long').Long,
+  Double = require('../double').Double,
+  Timestamp = require('../timestamp').Timestamp,
+  ObjectID = require('../objectid').ObjectID,
+  Symbol = require('../symbol').Symbol,
+  Code = require('../code').Code,
+  MinKey = require('../min_key').MinKey,
+  MaxKey = require('../max_key').MaxKey,
+  Decimal128 = require('../decimal128'),
+  Int32 = require('../int_32'),
+  DBRef = require('../db_ref').DBRef,
+  BSONRegExp = require('../regexp').BSONRegExp,
+  Binary = require('../binary').Binary;
+
+var utils = require('./utils');
+
+var deserialize = function(buffer, options, isArray) {
+  options = options == null ? {} : options;
+  var index = options && options.index ? options.index : 0;
+  // Read the document size
+  var size =
+    buffer[index] |
+    (buffer[index + 1] << 8) |
+    (buffer[index + 2] << 16) |
+    (buffer[index + 3] << 24);
+
+  // Ensure buffer is valid size
+  if (size < 5 || buffer.length < size || size + index > buffer.length) {
+    throw new Error('corrupt bson message');
+  }
+
+  // Illegal end value
+  if (buffer[index + size - 1] !== 0) {
+    throw new Error("One object, sized correctly, with a spot for an EOO, but the EOO isn't 0x00");
+  }
+
+  // Start deserializtion
+  return deserializeObject(buffer, index, options, isArray);
+};
+
+var deserializeObject = function(buffer, index, options, isArray) {
+  var evalFunctions = options['evalFunctions'] == null ? false : options['evalFunctions'];
+  var cacheFunctions = options['cacheFunctions'] == null ? false : options['cacheFunctions'];
+  var cacheFunctionsCrc32 =
+    options['cacheFunctionsCrc32'] == null ? false : options['cacheFunctionsCrc32'];
+
+  if (!cacheFunctionsCrc32) var crc32 = null;
+
+  var fieldsAsRaw = options['fieldsAsRaw'] == null ? null : options['fieldsAsRaw'];
+
+  // Return raw bson buffer instead of parsing it
+  var raw = options['raw'] == null ? false : options['raw'];
+
+  // Return BSONRegExp objects instead of native regular expressions
+  var bsonRegExp = typeof options['bsonRegExp'] === 'boolean' ? options['bsonRegExp'] : false;
+
+  // Controls the promotion of values vs wrapper classes
+  var promoteBuffers = options['promoteBuffers'] == null ? false : options['promoteBuffers'];
+  var promoteLongs = options['promoteLongs'] == null ? true : options['promoteLongs'];
+  var promoteValues = options['promoteValues'] == null ? true : options['promoteValues'];
+
+  // Set the start index
+  var startIndex = index;
+
+  // Validate that we have at least 4 bytes of buffer
+  if (buffer.length < 5) throw new Error('corrupt bson message < 5 bytes long');
+
+  // Read the document size
+  var size =
+    buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);
+
+  // Ensure buffer is valid size
+  if (size < 5 || size > buffer.length) throw new Error('corrupt bson message');
+
+  // Create holding object
+  var object = isArray ? [] : {};
+  // Used for arrays to skip having to perform utf8 decoding
+  var arrayIndex = 0;
+
+  var done = false;
+
+  // While we have more left data left keep parsing
+  // while (buffer[index + 1] !== 0) {
+  while (!done) {
+    // Read the type
+    var elementType = buffer[index++];
+    // If we get a zero it's the last byte, exit
+    if (elementType === 0) break;
+
+    // Get the start search index
+    var i = index;
+    // Locate the end of the c string
+    while (buffer[i] !== 0x00 && i < buffer.length) {
+      i++;
+    }
+
+    // If are at the end of the buffer there is a problem with the document
+    if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString');
+    var name = isArray ? arrayIndex++ : buffer.toString('utf8', index, i);
+
+    index = i + 1;
+
+    if (elementType === BSON.BSON_DATA_STRING) {
+      var stringSize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      if (
+        stringSize <= 0 ||
+        stringSize > buffer.length - index ||
+        buffer[index + stringSize - 1] !== 0
+      )
+        throw new Error('bad string length in bson');
+      object[name] = buffer.toString('utf8', index, index + stringSize - 1);
+      index = index + stringSize;
+    } else if (elementType === BSON.BSON_DATA_OID) {
+      var oid = utils.allocBuffer(12);
+      buffer.copy(oid, 0, index, index + 12);
+      object[name] = new ObjectID(oid);
+      index = index + 12;
+    } else if (elementType === BSON.BSON_DATA_INT && promoteValues === false) {
+      object[name] = new Int32(
+        buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24)
+      );
+    } else if (elementType === BSON.BSON_DATA_INT) {
+      object[name] =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+    } else if (elementType === BSON.BSON_DATA_NUMBER && promoteValues === false) {
+      object[name] = new Double(buffer.readDoubleLE(index));
+      index = index + 8;
+    } else if (elementType === BSON.BSON_DATA_NUMBER) {
+      object[name] = buffer.readDoubleLE(index);
+      index = index + 8;
+    } else if (elementType === BSON.BSON_DATA_DATE) {
+      var lowBits =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      var highBits =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      object[name] = new Date(new Long(lowBits, highBits).toNumber());
+    } else if (elementType === BSON.BSON_DATA_BOOLEAN) {
+      if (buffer[index] !== 0 && buffer[index] !== 1) throw new Error('illegal boolean type value');
+      object[name] = buffer[index++] === 1;
+    } else if (elementType === BSON.BSON_DATA_OBJECT) {
+      var _index = index;
+      var objectSize =
+        buffer[index] |
+        (buffer[index + 1] << 8) |
+        (buffer[index + 2] << 16) |
+        (buffer[index + 3] << 24);
+      if (objectSize <= 0 || objectSize > buffer.length - index)
+        throw new Error('bad embedded document length in bson');
+
+      // We have a raw value
+      if (raw) {
+        object[name] = buffer.slice(index, index + objectSize);
+      } else {
+        object[name] = deserializeObject(buffer, _index, options, false);
+      }
+
+      index = index + objectSize;
+    } else if (elementType === BSON.BSON_DATA_ARRAY) {
+      _index = index;
+      objectSize =
+        buffer[index] |
+        (buffer[index + 1] << 8) |
+        (buffer[index + 2] << 16) |
+        (buffer[index + 3] << 24);
+      var arrayOptions = options;
+
+      // Stop index
+      var stopIndex = index + objectSize;
+
+      // All elements of array to be returned as raw bson
+      if (fieldsAsRaw && fieldsAsRaw[name]) {
+        arrayOptions = {};
+        for (var n in options) arrayOptions[n] = options[n];
+        arrayOptions['raw'] = true;
+      }
+
+      object[name] = deserializeObject(buffer, _index, arrayOptions, true);
+      index = index + objectSize;
+
+      if (buffer[index - 1] !== 0) throw new Error('invalid array terminator byte');
+      if (index !== stopIndex) throw new Error('corrupted array bson');
+    } else if (elementType === BSON.BSON_DATA_UNDEFINED) {
+      object[name] = undefined;
+    } else if (elementType === BSON.BSON_DATA_NULL) {
+      object[name] = null;
+    } else if (elementType === BSON.BSON_DATA_LONG) {
+      // Unpack the low and high bits
+      lowBits =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      highBits =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      var long = new Long(lowBits, highBits);
+      // Promote the long if possible
+      if (promoteLongs && promoteValues === true) {
+        object[name] =
+          long.lessThanOrEqual(JS_INT_MAX_LONG) && long.greaterThanOrEqual(JS_INT_MIN_LONG)
+            ? long.toNumber()
+            : long;
+      } else {
+        object[name] = long;
+      }
+    } else if (elementType === BSON.BSON_DATA_DECIMAL128) {
+      // Buffer to contain the decimal bytes
+      var bytes = utils.allocBuffer(16);
+      // Copy the next 16 bytes into the bytes buffer
+      buffer.copy(bytes, 0, index, index + 16);
+      // Update index
+      index = index + 16;
+      // Assign the new Decimal128 value
+      var decimal128 = new Decimal128(bytes);
+      // If we have an alternative mapper use that
+      object[name] = decimal128.toObject ? decimal128.toObject() : decimal128;
+    } else if (elementType === BSON.BSON_DATA_BINARY) {
+      var binarySize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      var totalBinarySize = binarySize;
+      var subType = buffer[index++];
+
+      // Did we have a negative binary size, throw
+      if (binarySize < 0) throw new Error('Negative binary type element size found');
+
+      // Is the length longer than the document
+      if (binarySize > buffer.length) throw new Error('Binary type size larger than document size');
+
+      // Decode as raw Buffer object if options specifies it
+      if (buffer['slice'] != null) {
+        // If we have subtype 2 skip the 4 bytes for the size
+        if (subType === Binary.SUBTYPE_BYTE_ARRAY) {
+          binarySize =
+            buffer[index++] |
+            (buffer[index++] << 8) |
+            (buffer[index++] << 16) |
+            (buffer[index++] << 24);
+          if (binarySize < 0)
+            throw new Error('Negative binary type element size found for subtype 0x02');
+          if (binarySize > totalBinarySize - 4)
+            throw new Error('Binary type with subtype 0x02 contains to long binary size');
+          if (binarySize < totalBinarySize - 4)
+            throw new Error('Binary type with subtype 0x02 contains to short binary size');
+        }
+
+        if (promoteBuffers && promoteValues) {
+          object[name] = buffer.slice(index, index + binarySize);
+        } else {
+          object[name] = new Binary(buffer.slice(index, index + binarySize), subType);
+        }
+      } else {
+        var _buffer =
+          typeof Uint8Array !== 'undefined'
+            ? new Uint8Array(new ArrayBuffer(binarySize))
+            : new Array(binarySize);
+        // If we have subtype 2 skip the 4 bytes for the size
+        if (subType === Binary.SUBTYPE_BYTE_ARRAY) {
+          binarySize =
+            buffer[index++] |
+            (buffer[index++] << 8) |
+            (buffer[index++] << 16) |
+            (buffer[index++] << 24);
+          if (binarySize < 0)
+            throw new Error('Negative binary type element size found for subtype 0x02');
+          if (binarySize > totalBinarySize - 4)
+            throw new Error('Binary type with subtype 0x02 contains to long binary size');
+          if (binarySize < totalBinarySize - 4)
+            throw new Error('Binary type with subtype 0x02 contains to short binary size');
+        }
+
+        // Copy the data
+        for (i = 0; i < binarySize; i++) {
+          _buffer[i] = buffer[index + i];
+        }
+
+        if (promoteBuffers && promoteValues) {
+          object[name] = _buffer;
+        } else {
+          object[name] = new Binary(_buffer, subType);
+        }
+      }
+
+      // Update the index
+      index = index + binarySize;
+    } else if (elementType === BSON.BSON_DATA_REGEXP && bsonRegExp === false) {
+      // Get the start search index
+      i = index;
+      // Locate the end of the c string
+      while (buffer[i] !== 0x00 && i < buffer.length) {
+        i++;
+      }
+      // If are at the end of the buffer there is a problem with the document
+      if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString');
+      // Return the C string
+      var source = buffer.toString('utf8', index, i);
+      // Create the regexp
+      index = i + 1;
+
+      // Get the start search index
+      i = index;
+      // Locate the end of the c string
+      while (buffer[i] !== 0x00 && i < buffer.length) {
+        i++;
+      }
+      // If are at the end of the buffer there is a problem with the document
+      if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString');
+      // Return the C string
+      var regExpOptions = buffer.toString('utf8', index, i);
+      index = i + 1;
+
+      // For each option add the corresponding one for javascript
+      var optionsArray = new Array(regExpOptions.length);
+
+      // Parse options
+      for (i = 0; i < regExpOptions.length; i++) {
+        switch (regExpOptions[i]) {
+          case 'm':
+            optionsArray[i] = 'm';
+            break;
+          case 's':
+            optionsArray[i] = 'g';
+            break;
+          case 'i':
+            optionsArray[i] = 'i';
+            break;
+        }
+      }
+
+      object[name] = new RegExp(source, optionsArray.join(''));
+    } else if (elementType === BSON.BSON_DATA_REGEXP && bsonRegExp === true) {
+      // Get the start search index
+      i = index;
+      // Locate the end of the c string
+      while (buffer[i] !== 0x00 && i < buffer.length) {
+        i++;
+      }
+      // If are at the end of the buffer there is a problem with the document
+      if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString');
+      // Return the C string
+      source = buffer.toString('utf8', index, i);
+      index = i + 1;
+
+      // Get the start search index
+      i = index;
+      // Locate the end of the c string
+      while (buffer[i] !== 0x00 && i < buffer.length) {
+        i++;
+      }
+      // If are at the end of the buffer there is a problem with the document
+      if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString');
+      // Return the C string
+      regExpOptions = buffer.toString('utf8', index, i);
+      index = i + 1;
+
+      // Set the object
+      object[name] = new BSONRegExp(source, regExpOptions);
+    } else if (elementType === BSON.BSON_DATA_SYMBOL) {
+      stringSize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      if (
+        stringSize <= 0 ||
+        stringSize > buffer.length - index ||
+        buffer[index + stringSize - 1] !== 0
+      )
+        throw new Error('bad string length in bson');
+      object[name] = new Symbol(buffer.toString('utf8', index, index + stringSize - 1));
+      index = index + stringSize;
+    } else if (elementType === BSON.BSON_DATA_TIMESTAMP) {
+      lowBits =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      highBits =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      object[name] = new Timestamp(lowBits, highBits);
+    } else if (elementType === BSON.BSON_DATA_MIN_KEY) {
+      object[name] = new MinKey();
+    } else if (elementType === BSON.BSON_DATA_MAX_KEY) {
+      object[name] = new MaxKey();
+    } else if (elementType === BSON.BSON_DATA_CODE) {
+      stringSize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      if (
+        stringSize <= 0 ||
+        stringSize > buffer.length - index ||
+        buffer[index + stringSize - 1] !== 0
+      )
+        throw new Error('bad string length in bson');
+      var functionString = buffer.toString('utf8', index, index + stringSize - 1);
+
+      // If we are evaluating the functions
+      if (evalFunctions) {
+        // If we have cache enabled let's look for the md5 of the function in the cache
+        if (cacheFunctions) {
+          var hash = cacheFunctionsCrc32 ? crc32(functionString) : functionString;
+          // Got to do this to avoid V8 deoptimizing the call due to finding eval
+          object[name] = isolateEvalWithHash(functionCache, hash, functionString, object);
+        } else {
+          object[name] = isolateEval(functionString);
+        }
+      } else {
+        object[name] = new Code(functionString);
+      }
+
+      // Update parse index position
+      index = index + stringSize;
+    } else if (elementType === BSON.BSON_DATA_CODE_W_SCOPE) {
+      var totalSize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+
+      // Element cannot be shorter than totalSize + stringSize + documentSize + terminator
+      if (totalSize < 4 + 4 + 4 + 1) {
+        throw new Error('code_w_scope total size shorter minimum expected length');
+      }
+
+      // Get the code string size
+      stringSize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      // Check if we have a valid string
+      if (
+        stringSize <= 0 ||
+        stringSize > buffer.length - index ||
+        buffer[index + stringSize - 1] !== 0
+      )
+        throw new Error('bad string length in bson');
+
+      // Javascript function
+      functionString = buffer.toString('utf8', index, index + stringSize - 1);
+      // Update parse index position
+      index = index + stringSize;
+      // Parse the element
+      _index = index;
+      // Decode the size of the object document
+      objectSize =
+        buffer[index] |
+        (buffer[index + 1] << 8) |
+        (buffer[index + 2] << 16) |
+        (buffer[index + 3] << 24);
+      // Decode the scope object
+      var scopeObject = deserializeObject(buffer, _index, options, false);
+      // Adjust the index
+      index = index + objectSize;
+
+      // Check if field length is to short
+      if (totalSize < 4 + 4 + objectSize + stringSize) {
+        throw new Error('code_w_scope total size is to short, truncating scope');
+      }
+
+      // Check if totalSize field is to long
+      if (totalSize > 4 + 4 + objectSize + stringSize) {
+        throw new Error('code_w_scope total size is to long, clips outer document');
+      }
+
+      // If we are evaluating the functions
+      if (evalFunctions) {
+        // If we have cache enabled let's look for the md5 of the function in the cache
+        if (cacheFunctions) {
+          hash = cacheFunctionsCrc32 ? crc32(functionString) : functionString;
+          // Got to do this to avoid V8 deoptimizing the call due to finding eval
+          object[name] = isolateEvalWithHash(functionCache, hash, functionString, object);
+        } else {
+          object[name] = isolateEval(functionString);
+        }
+
+        object[name].scope = scopeObject;
+      } else {
+        object[name] = new Code(functionString, scopeObject);
+      }
+    } else if (elementType === BSON.BSON_DATA_DBPOINTER) {
+      // Get the code string size
+      stringSize =
+        buffer[index++] |
+        (buffer[index++] << 8) |
+        (buffer[index++] << 16) |
+        (buffer[index++] << 24);
+      // Check if we have a valid string
+      if (
+        stringSize <= 0 ||
+        stringSize > buffer.length - index ||
+        buffer[index + stringSize - 1] !== 0
+      )
+        throw new Error('bad string length in bson');
+      // Namespace
+      var namespace = buffer.toString('utf8', index, index + stringSize - 1);
+      // Update parse index position
+      index = index + stringSize;
+
+      // Read the oid
+      var oidBuffer = utils.allocBuffer(12);
+      buffer.copy(oidBuffer, 0, index, index + 12);
+      oid = new ObjectID(oidBuffer);
+
+      // Update the index
+      index = index + 12;
+
+      // Split the namespace
+      var parts = namespace.split('.');
+      var db = parts.shift();
+      var collection = parts.join('.');
+      // Upgrade to DBRef type
+      object[name] = new DBRef(collection, oid, db);
+    } else {
+      throw new Error(
+        'Detected unknown BSON type ' +
+          elementType.toString(16) +
+          ' for fieldname "' +
+          name +
+          '", are you using the latest BSON parser'
+      );
+    }
+  }
+
+  // Check if the deserialization was against a valid array/object
+  if (size !== index - startIndex) {
+    if (isArray) throw new Error('corrupt array bson');
+    throw new Error('corrupt object bson');
+  }
+
+  // Check if we have a db ref object
+  if (object['$id'] != null) object = new DBRef(object['$ref'], object['$id'], object['$db']);
+  return object;
+};
+
+/**
+ * Ensure eval is isolated.
+ *
+ * @ignore
+ * @api private
+ */
+var isolateEvalWithHash = function(functionCache, hash, functionString, object) {
+  // Contains the value we are going to set
+  var value = null;
+
+  // Check for cache hit, eval if missing and return cached function
+  if (functionCache[hash] == null) {
+    eval('value = ' + functionString);
+    functionCache[hash] = value;
+  }
+  // Set the object
+  return functionCache[hash].bind(object);
+};
+
+/**
+ * Ensure eval is isolated.
+ *
+ * @ignore
+ * @api private
+ */
+var isolateEval = function(functionString) {
+  // Contains the value we are going to set
+  var value = null;
+  // Eval the function
+  eval('value = ' + functionString);
+  return value;
+};
+
+var BSON = {};
+
+/**
+ * Contains the function cache if we have that enable to allow for avoiding the eval step on each deserialization, comparison is by md5
+ *
+ * @ignore
+ * @api private
+ */
+var functionCache = (BSON.functionCache = {});
+
+/**
+ * Number BSON Type
+ *
+ * @classconstant BSON_DATA_NUMBER
+ **/
+BSON.BSON_DATA_NUMBER = 1;
+/**
+ * String BSON Type
+ *
+ * @classconstant BSON_DATA_STRING
+ **/
+BSON.BSON_DATA_STRING = 2;
+/**
+ * Object BSON Type
+ *
+ * @classconstant BSON_DATA_OBJECT
+ **/
+BSON.BSON_DATA_OBJECT = 3;
+/**
+ * Array BSON Type
+ *
+ * @classconstant BSON_DATA_ARRAY
+ **/
+BSON.BSON_DATA_ARRAY = 4;
+/**
+ * Binary BSON Type
+ *
+ * @classconstant BSON_DATA_BINARY
+ **/
+BSON.BSON_DATA_BINARY = 5;
+/**
+ * Binary BSON Type
+ *
+ * @classconstant BSON_DATA_UNDEFINED
+ **/
+BSON.BSON_DATA_UNDEFINED = 6;
+/**
+ * ObjectID BSON Type
+ *
+ * @classconstant BSON_DATA_OID
+ **/
+BSON.BSON_DATA_OID = 7;
+/**
+ * Boolean BSON Type
+ *
+ * @classconstant BSON_DATA_BOOLEAN
+ **/
+BSON.BSON_DATA_BOOLEAN = 8;
+/**
+ * Date BSON Type
+ *
+ * @classconstant BSON_DATA_DATE
+ **/
+BSON.BSON_DATA_DATE = 9;
+/**
+ * null BSON Type
+ *
+ * @classconstant BSON_DATA_NULL
+ **/
+BSON.BSON_DATA_NULL = 10;
+/**
+ * RegExp BSON Type
+ *
+ * @classconstant BSON_DATA_REGEXP
+ **/
+BSON.BSON_DATA_REGEXP = 11;
+/**
+ * Code BSON Type
+ *
+ * @classconstant BSON_DATA_DBPOINTER
+ **/
+BSON.BSON_DATA_DBPOINTER = 12;
+/**
+ * Code BSON Type
+ *
+ * @classconstant BSON_DATA_CODE
+ **/
+BSON.BSON_DATA_CODE = 13;
+/**
+ * Symbol BSON Type
+ *
+ * @classconstant BSON_DATA_SYMBOL
+ **/
+BSON.BSON_DATA_SYMBOL = 14;
+/**
+ * Code with Scope BSON Type
+ *
+ * @classconstant BSON_DATA_CODE_W_SCOPE
+ **/
+BSON.BSON_DATA_CODE_W_SCOPE = 15;
+/**
+ * 32 bit Integer BSON Type
+ *
+ * @classconstant BSON_DATA_INT
+ **/
+BSON.BSON_DATA_INT = 16;
+/**
+ * Timestamp BSON Type
+ *
+ * @classconstant BSON_DATA_TIMESTAMP
+ **/
+BSON.BSON_DATA_TIMESTAMP = 17;
+/**
+ * Long BSON Type
+ *
+ * @classconstant BSON_DATA_LONG
+ **/
+BSON.BSON_DATA_LONG = 18;
+/**
+ * Long BSON Type
+ *
+ * @classconstant BSON_DATA_DECIMAL128
+ **/
+BSON.BSON_DATA_DECIMAL128 = 19;
+/**
+ * MinKey BSON Type
+ *
+ * @classconstant BSON_DATA_MIN_KEY
+ **/
+BSON.BSON_DATA_MIN_KEY = 0xff;
+/**
+ * MaxKey BSON Type
+ *
+ * @classconstant BSON_DATA_MAX_KEY
+ **/
+BSON.BSON_DATA_MAX_KEY = 0x7f;
+
+/**
+ * Binary Default Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_DEFAULT
+ **/
+BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0;
+/**
+ * Binary Function Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_FUNCTION
+ **/
+BSON.BSON_BINARY_SUBTYPE_FUNCTION = 1;
+/**
+ * Binary Byte Array Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_BYTE_ARRAY
+ **/
+BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY = 2;
+/**
+ * Binary UUID Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_UUID
+ **/
+BSON.BSON_BINARY_SUBTYPE_UUID = 3;
+/**
+ * Binary MD5 Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_MD5
+ **/
+BSON.BSON_BINARY_SUBTYPE_MD5 = 4;
+/**
+ * Binary User Defined Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_USER_DEFINED
+ **/
+BSON.BSON_BINARY_SUBTYPE_USER_DEFINED = 128;
+
+// BSON MAX VALUES
+BSON.BSON_INT32_MAX = 0x7fffffff;
+BSON.BSON_INT32_MIN = -0x80000000;
+
+BSON.BSON_INT64_MAX = Math.pow(2, 63) - 1;
+BSON.BSON_INT64_MIN = -Math.pow(2, 63);
+
+// JS MAX PRECISE VALUES
+BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double.
+BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double.
+
+// Internal long versions
+var JS_INT_MAX_LONG = Long.fromNumber(0x20000000000000); // Any integer up to 2^53 can be precisely represented by a double.
+var JS_INT_MIN_LONG = Long.fromNumber(-0x20000000000000); // Any integer down to -2^53 can be precisely represented by a double.
+
+module.exports = deserialize;
diff --git a/node_modules/bson/lib/bson/parser/serializer.js b/node_modules/bson/lib/bson/parser/serializer.js
new file mode 100644
index 0000000..6bb212e
--- /dev/null
+++ b/node_modules/bson/lib/bson/parser/serializer.js
@@ -0,0 +1,1188 @@
+'use strict';
+
+var writeIEEE754 = require('../float_parser').writeIEEE754,
+  Long = require('../long').Long,
+  Map = require('../map'),
+  Binary = require('../binary').Binary;
+
+var normalizedFunctionString = require('./utils').normalizedFunctionString;
+
+// try {
+//   var _Buffer = Uint8Array;
+// } catch (e) {
+//   _Buffer = Buffer;
+// }
+
+var regexp = /\x00/; // eslint-disable-line no-control-regex
+var ignoreKeys = ['$db', '$ref', '$id', '$clusterTime'];
+
+// To ensure that 0.4 of node works correctly
+var isDate = function isDate(d) {
+  return typeof d === 'object' && Object.prototype.toString.call(d) === '[object Date]';
+};
+
+var isRegExp = function isRegExp(d) {
+  return Object.prototype.toString.call(d) === '[object RegExp]';
+};
+
+var serializeString = function(buffer, key, value, index, isArray) {
+  // Encode String type
+  buffer[index++] = BSON.BSON_DATA_STRING;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes + 1;
+  buffer[index - 1] = 0;
+  // Write the string
+  var size = buffer.write(value, index + 4, 'utf8');
+  // Write the size of the string to buffer
+  buffer[index + 3] = ((size + 1) >> 24) & 0xff;
+  buffer[index + 2] = ((size + 1) >> 16) & 0xff;
+  buffer[index + 1] = ((size + 1) >> 8) & 0xff;
+  buffer[index] = (size + 1) & 0xff;
+  // Update index
+  index = index + 4 + size;
+  // Write zero
+  buffer[index++] = 0;
+  return index;
+};
+
+var serializeNumber = function(buffer, key, value, index, isArray) {
+  // We have an integer value
+  if (Math.floor(value) === value && value >= BSON.JS_INT_MIN && value <= BSON.JS_INT_MAX) {
+    // If the value fits in 32 bits encode as int, if it fits in a double
+    // encode it as a double, otherwise long
+    if (value >= BSON.BSON_INT32_MIN && value <= BSON.BSON_INT32_MAX) {
+      // Set int type 32 bits or less
+      buffer[index++] = BSON.BSON_DATA_INT;
+      // Number of written bytes
+      var numberOfWrittenBytes = !isArray
+        ? buffer.write(key, index, 'utf8')
+        : buffer.write(key, index, 'ascii');
+      // Encode the name
+      index = index + numberOfWrittenBytes;
+      buffer[index++] = 0;
+      // Write the int value
+      buffer[index++] = value & 0xff;
+      buffer[index++] = (value >> 8) & 0xff;
+      buffer[index++] = (value >> 16) & 0xff;
+      buffer[index++] = (value >> 24) & 0xff;
+    } else if (value >= BSON.JS_INT_MIN && value <= BSON.JS_INT_MAX) {
+      // Encode as double
+      buffer[index++] = BSON.BSON_DATA_NUMBER;
+      // Number of written bytes
+      numberOfWrittenBytes = !isArray
+        ? buffer.write(key, index, 'utf8')
+        : buffer.write(key, index, 'ascii');
+      // Encode the name
+      index = index + numberOfWrittenBytes;
+      buffer[index++] = 0;
+      // Write float
+      writeIEEE754(buffer, value, index, 'little', 52, 8);
+      // Ajust index
+      index = index + 8;
+    } else {
+      // Set long type
+      buffer[index++] = BSON.BSON_DATA_LONG;
+      // Number of written bytes
+      numberOfWrittenBytes = !isArray
+        ? buffer.write(key, index, 'utf8')
+        : buffer.write(key, index, 'ascii');
+      // Encode the name
+      index = index + numberOfWrittenBytes;
+      buffer[index++] = 0;
+      var longVal = Long.fromNumber(value);
+      var lowBits = longVal.getLowBits();
+      var highBits = longVal.getHighBits();
+      // Encode low bits
+      buffer[index++] = lowBits & 0xff;
+      buffer[index++] = (lowBits >> 8) & 0xff;
+      buffer[index++] = (lowBits >> 16) & 0xff;
+      buffer[index++] = (lowBits >> 24) & 0xff;
+      // Encode high bits
+      buffer[index++] = highBits & 0xff;
+      buffer[index++] = (highBits >> 8) & 0xff;
+      buffer[index++] = (highBits >> 16) & 0xff;
+      buffer[index++] = (highBits >> 24) & 0xff;
+    }
+  } else {
+    // Encode as double
+    buffer[index++] = BSON.BSON_DATA_NUMBER;
+    // Number of written bytes
+    numberOfWrittenBytes = !isArray
+      ? buffer.write(key, index, 'utf8')
+      : buffer.write(key, index, 'ascii');
+    // Encode the name
+    index = index + numberOfWrittenBytes;
+    buffer[index++] = 0;
+    // Write float
+    writeIEEE754(buffer, value, index, 'little', 52, 8);
+    // Ajust index
+    index = index + 8;
+  }
+
+  return index;
+};
+
+var serializeNull = function(buffer, key, value, index, isArray) {
+  // Set long type
+  buffer[index++] = BSON.BSON_DATA_NULL;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  return index;
+};
+
+var serializeBoolean = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_BOOLEAN;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Encode the boolean value
+  buffer[index++] = value ? 1 : 0;
+  return index;
+};
+
+var serializeDate = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_DATE;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+
+  // Write the date
+  var dateInMilis = Long.fromNumber(value.getTime());
+  var lowBits = dateInMilis.getLowBits();
+  var highBits = dateInMilis.getHighBits();
+  // Encode low bits
+  buffer[index++] = lowBits & 0xff;
+  buffer[index++] = (lowBits >> 8) & 0xff;
+  buffer[index++] = (lowBits >> 16) & 0xff;
+  buffer[index++] = (lowBits >> 24) & 0xff;
+  // Encode high bits
+  buffer[index++] = highBits & 0xff;
+  buffer[index++] = (highBits >> 8) & 0xff;
+  buffer[index++] = (highBits >> 16) & 0xff;
+  buffer[index++] = (highBits >> 24) & 0xff;
+  return index;
+};
+
+var serializeRegExp = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_REGEXP;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  if (value.source && value.source.match(regexp) != null) {
+    throw Error('value ' + value.source + ' must not contain null bytes');
+  }
+  // Adjust the index
+  index = index + buffer.write(value.source, index, 'utf8');
+  // Write zero
+  buffer[index++] = 0x00;
+  // Write the parameters
+  if (value.global) buffer[index++] = 0x73; // s
+  if (value.ignoreCase) buffer[index++] = 0x69; // i
+  if (value.multiline) buffer[index++] = 0x6d; // m
+  // Add ending zero
+  buffer[index++] = 0x00;
+  return index;
+};
+
+var serializeBSONRegExp = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_REGEXP;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+
+  // Check the pattern for 0 bytes
+  if (value.pattern.match(regexp) != null) {
+    // The BSON spec doesn't allow keys with null bytes because keys are
+    // null-terminated.
+    throw Error('pattern ' + value.pattern + ' must not contain null bytes');
+  }
+
+  // Adjust the index
+  index = index + buffer.write(value.pattern, index, 'utf8');
+  // Write zero
+  buffer[index++] = 0x00;
+  // Write the options
+  index =
+    index +
+    buffer.write(
+      value.options
+        .split('')
+        .sort()
+        .join(''),
+      index,
+      'utf8'
+    );
+  // Add ending zero
+  buffer[index++] = 0x00;
+  return index;
+};
+
+var serializeMinMax = function(buffer, key, value, index, isArray) {
+  // Write the type of either min or max key
+  if (value === null) {
+    buffer[index++] = BSON.BSON_DATA_NULL;
+  } else if (value._bsontype === 'MinKey') {
+    buffer[index++] = BSON.BSON_DATA_MIN_KEY;
+  } else {
+    buffer[index++] = BSON.BSON_DATA_MAX_KEY;
+  }
+
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  return index;
+};
+
+var serializeObjectId = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_OID;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+
+  // Write the objectId into the shared buffer
+  if (typeof value.id === 'string') {
+    buffer.write(value.id, index, 'binary');
+  } else if (value.id && value.id.copy) {
+    value.id.copy(buffer, index, 0, 12);
+  } else {
+    throw new Error('object [' + JSON.stringify(value) + '] is not a valid ObjectId');
+  }
+
+  // Ajust index
+  return index + 12;
+};
+
+var serializeBuffer = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_BINARY;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Get size of the buffer (current write point)
+  var size = value.length;
+  // Write the size of the string to buffer
+  buffer[index++] = size & 0xff;
+  buffer[index++] = (size >> 8) & 0xff;
+  buffer[index++] = (size >> 16) & 0xff;
+  buffer[index++] = (size >> 24) & 0xff;
+  // Write the default subtype
+  buffer[index++] = BSON.BSON_BINARY_SUBTYPE_DEFAULT;
+  // Copy the content form the binary field to the buffer
+  value.copy(buffer, index, 0, size);
+  // Adjust the index
+  index = index + size;
+  return index;
+};
+
+var serializeObject = function(
+  buffer,
+  key,
+  value,
+  index,
+  checkKeys,
+  depth,
+  serializeFunctions,
+  ignoreUndefined,
+  isArray,
+  path
+) {
+  for (var i = 0; i < path.length; i++) {
+    if (path[i] === value) throw new Error('cyclic dependency detected');
+  }
+
+  // Push value to stack
+  path.push(value);
+  // Write the type
+  buffer[index++] = Array.isArray(value) ? BSON.BSON_DATA_ARRAY : BSON.BSON_DATA_OBJECT;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  var endIndex = serializeInto(
+    buffer,
+    value,
+    checkKeys,
+    index,
+    depth + 1,
+    serializeFunctions,
+    ignoreUndefined,
+    path
+  );
+  // Pop stack
+  path.pop();
+  // Write size
+  return endIndex;
+};
+
+var serializeDecimal128 = function(buffer, key, value, index, isArray) {
+  buffer[index++] = BSON.BSON_DATA_DECIMAL128;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Write the data from the value
+  value.bytes.copy(buffer, index, 0, 16);
+  return index + 16;
+};
+
+var serializeLong = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = value._bsontype === 'Long' ? BSON.BSON_DATA_LONG : BSON.BSON_DATA_TIMESTAMP;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Write the date
+  var lowBits = value.getLowBits();
+  var highBits = value.getHighBits();
+  // Encode low bits
+  buffer[index++] = lowBits & 0xff;
+  buffer[index++] = (lowBits >> 8) & 0xff;
+  buffer[index++] = (lowBits >> 16) & 0xff;
+  buffer[index++] = (lowBits >> 24) & 0xff;
+  // Encode high bits
+  buffer[index++] = highBits & 0xff;
+  buffer[index++] = (highBits >> 8) & 0xff;
+  buffer[index++] = (highBits >> 16) & 0xff;
+  buffer[index++] = (highBits >> 24) & 0xff;
+  return index;
+};
+
+var serializeInt32 = function(buffer, key, value, index, isArray) {
+  // Set int type 32 bits or less
+  buffer[index++] = BSON.BSON_DATA_INT;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Write the int value
+  buffer[index++] = value & 0xff;
+  buffer[index++] = (value >> 8) & 0xff;
+  buffer[index++] = (value >> 16) & 0xff;
+  buffer[index++] = (value >> 24) & 0xff;
+  return index;
+};
+
+var serializeDouble = function(buffer, key, value, index, isArray) {
+  // Encode as double
+  buffer[index++] = BSON.BSON_DATA_NUMBER;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Write float
+  writeIEEE754(buffer, value, index, 'little', 52, 8);
+  // Ajust index
+  index = index + 8;
+  return index;
+};
+
+var serializeFunction = function(buffer, key, value, index, checkKeys, depth, isArray) {
+  buffer[index++] = BSON.BSON_DATA_CODE;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Function string
+  var functionString = normalizedFunctionString(value);
+
+  // Write the string
+  var size = buffer.write(functionString, index + 4, 'utf8') + 1;
+  // Write the size of the string to buffer
+  buffer[index] = size & 0xff;
+  buffer[index + 1] = (size >> 8) & 0xff;
+  buffer[index + 2] = (size >> 16) & 0xff;
+  buffer[index + 3] = (size >> 24) & 0xff;
+  // Update index
+  index = index + 4 + size - 1;
+  // Write zero
+  buffer[index++] = 0;
+  return index;
+};
+
+var serializeCode = function(
+  buffer,
+  key,
+  value,
+  index,
+  checkKeys,
+  depth,
+  serializeFunctions,
+  ignoreUndefined,
+  isArray
+) {
+  if (value.scope && typeof value.scope === 'object') {
+    // Write the type
+    buffer[index++] = BSON.BSON_DATA_CODE_W_SCOPE;
+    // Number of written bytes
+    var numberOfWrittenBytes = !isArray
+      ? buffer.write(key, index, 'utf8')
+      : buffer.write(key, index, 'ascii');
+    // Encode the name
+    index = index + numberOfWrittenBytes;
+    buffer[index++] = 0;
+
+    // Starting index
+    var startIndex = index;
+
+    // Serialize the function
+    // Get the function string
+    var functionString = typeof value.code === 'string' ? value.code : value.code.toString();
+    // Index adjustment
+    index = index + 4;
+    // Write string into buffer
+    var codeSize = buffer.write(functionString, index + 4, 'utf8') + 1;
+    // Write the size of the string to buffer
+    buffer[index] = codeSize & 0xff;
+    buffer[index + 1] = (codeSize >> 8) & 0xff;
+    buffer[index + 2] = (codeSize >> 16) & 0xff;
+    buffer[index + 3] = (codeSize >> 24) & 0xff;
+    // Write end 0
+    buffer[index + 4 + codeSize - 1] = 0;
+    // Write the
+    index = index + codeSize + 4;
+
+    //
+    // Serialize the scope value
+    var endIndex = serializeInto(
+      buffer,
+      value.scope,
+      checkKeys,
+      index,
+      depth + 1,
+      serializeFunctions,
+      ignoreUndefined
+    );
+    index = endIndex - 1;
+
+    // Writ the total
+    var totalSize = endIndex - startIndex;
+
+    // Write the total size of the object
+    buffer[startIndex++] = totalSize & 0xff;
+    buffer[startIndex++] = (totalSize >> 8) & 0xff;
+    buffer[startIndex++] = (totalSize >> 16) & 0xff;
+    buffer[startIndex++] = (totalSize >> 24) & 0xff;
+    // Write trailing zero
+    buffer[index++] = 0;
+  } else {
+    buffer[index++] = BSON.BSON_DATA_CODE;
+    // Number of written bytes
+    numberOfWrittenBytes = !isArray
+      ? buffer.write(key, index, 'utf8')
+      : buffer.write(key, index, 'ascii');
+    // Encode the name
+    index = index + numberOfWrittenBytes;
+    buffer[index++] = 0;
+    // Function string
+    functionString = value.code.toString();
+    // Write the string
+    var size = buffer.write(functionString, index + 4, 'utf8') + 1;
+    // Write the size of the string to buffer
+    buffer[index] = size & 0xff;
+    buffer[index + 1] = (size >> 8) & 0xff;
+    buffer[index + 2] = (size >> 16) & 0xff;
+    buffer[index + 3] = (size >> 24) & 0xff;
+    // Update index
+    index = index + 4 + size - 1;
+    // Write zero
+    buffer[index++] = 0;
+  }
+
+  return index;
+};
+
+var serializeBinary = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_BINARY;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Extract the buffer
+  var data = value.value(true);
+  // Calculate size
+  var size = value.position;
+  // Add the deprecated 02 type 4 bytes of size to total
+  if (value.sub_type === Binary.SUBTYPE_BYTE_ARRAY) size = size + 4;
+  // Write the size of the string to buffer
+  buffer[index++] = size & 0xff;
+  buffer[index++] = (size >> 8) & 0xff;
+  buffer[index++] = (size >> 16) & 0xff;
+  buffer[index++] = (size >> 24) & 0xff;
+  // Write the subtype to the buffer
+  buffer[index++] = value.sub_type;
+
+  // If we have binary type 2 the 4 first bytes are the size
+  if (value.sub_type === Binary.SUBTYPE_BYTE_ARRAY) {
+    size = size - 4;
+    buffer[index++] = size & 0xff;
+    buffer[index++] = (size >> 8) & 0xff;
+    buffer[index++] = (size >> 16) & 0xff;
+    buffer[index++] = (size >> 24) & 0xff;
+  }
+
+  // Write the data to the object
+  data.copy(buffer, index, 0, value.position);
+  // Adjust the index
+  index = index + value.position;
+  return index;
+};
+
+var serializeSymbol = function(buffer, key, value, index, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_SYMBOL;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+  // Write the string
+  var size = buffer.write(value.value, index + 4, 'utf8') + 1;
+  // Write the size of the string to buffer
+  buffer[index] = size & 0xff;
+  buffer[index + 1] = (size >> 8) & 0xff;
+  buffer[index + 2] = (size >> 16) & 0xff;
+  buffer[index + 3] = (size >> 24) & 0xff;
+  // Update index
+  index = index + 4 + size - 1;
+  // Write zero
+  buffer[index++] = 0x00;
+  return index;
+};
+
+var serializeDBRef = function(buffer, key, value, index, depth, serializeFunctions, isArray) {
+  // Write the type
+  buffer[index++] = BSON.BSON_DATA_OBJECT;
+  // Number of written bytes
+  var numberOfWrittenBytes = !isArray
+    ? buffer.write(key, index, 'utf8')
+    : buffer.write(key, index, 'ascii');
+
+  // Encode the name
+  index = index + numberOfWrittenBytes;
+  buffer[index++] = 0;
+
+  var startIndex = index;
+  var endIndex;
+
+  // Serialize object
+  if (null != value.db) {
+    endIndex = serializeInto(
+      buffer,
+      {
+        $ref: value.namespace,
+        $id: value.oid,
+        $db: value.db
+      },
+      false,
+      index,
+      depth + 1,
+      serializeFunctions
+    );
+  } else {
+    endIndex = serializeInto(
+      buffer,
+      {
+        $ref: value.namespace,
+        $id: value.oid
+      },
+      false,
+      index,
+      depth + 1,
+      serializeFunctions
+    );
+  }
+
+  // Calculate object size
+  var size = endIndex - startIndex;
+  // Write the size
+  buffer[startIndex++] = size & 0xff;
+  buffer[startIndex++] = (size >> 8) & 0xff;
+  buffer[startIndex++] = (size >> 16) & 0xff;
+  buffer[startIndex++] = (size >> 24) & 0xff;
+  // Set index
+  return endIndex;
+};
+
+var serializeInto = function serializeInto(
+  buffer,
+  object,
+  checkKeys,
+  startingIndex,
+  depth,
+  serializeFunctions,
+  ignoreUndefined,
+  path
+) {
+  startingIndex = startingIndex || 0;
+  path = path || [];
+
+  // Push the object to the path
+  path.push(object);
+
+  // Start place to serialize into
+  var index = startingIndex + 4;
+  // var self = this;
+
+  // Special case isArray
+  if (Array.isArray(object)) {
+    // Get object keys
+    for (var i = 0; i < object.length; i++) {
+      var key = '' + i;
+      var value = object[i];
+
+      // Is there an override value
+      if (value && value.toBSON) {
+        if (typeof value.toBSON !== 'function') throw new Error('toBSON is not a function');
+        value = value.toBSON();
+      }
+
+      var type = typeof value;
+      if (type === 'string') {
+        index = serializeString(buffer, key, value, index, true);
+      } else if (type === 'number') {
+        index = serializeNumber(buffer, key, value, index, true);
+      } else if (type === 'boolean') {
+        index = serializeBoolean(buffer, key, value, index, true);
+      } else if (value instanceof Date || isDate(value)) {
+        index = serializeDate(buffer, key, value, index, true);
+      } else if (value === undefined) {
+        index = serializeNull(buffer, key, value, index, true);
+      } else if (value === null) {
+        index = serializeNull(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') {
+        index = serializeObjectId(buffer, key, value, index, true);
+      } else if (Buffer.isBuffer(value)) {
+        index = serializeBuffer(buffer, key, value, index, true);
+      } else if (value instanceof RegExp || isRegExp(value)) {
+        index = serializeRegExp(buffer, key, value, index, true);
+      } else if (type === 'object' && value['_bsontype'] == null) {
+        index = serializeObject(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          ignoreUndefined,
+          true,
+          path
+        );
+      } else if (type === 'object' && value['_bsontype'] === 'Decimal128') {
+        index = serializeDecimal128(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'Long' || value['_bsontype'] === 'Timestamp') {
+        index = serializeLong(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'Double') {
+        index = serializeDouble(buffer, key, value, index, true);
+      } else if (typeof value === 'function' && serializeFunctions) {
+        index = serializeFunction(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          true
+        );
+      } else if (value['_bsontype'] === 'Code') {
+        index = serializeCode(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          ignoreUndefined,
+          true
+        );
+      } else if (value['_bsontype'] === 'Binary') {
+        index = serializeBinary(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'Symbol') {
+        index = serializeSymbol(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'DBRef') {
+        index = serializeDBRef(buffer, key, value, index, depth, serializeFunctions, true);
+      } else if (value['_bsontype'] === 'BSONRegExp') {
+        index = serializeBSONRegExp(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'Int32') {
+        index = serializeInt32(buffer, key, value, index, true);
+      } else if (value['_bsontype'] === 'MinKey' || value['_bsontype'] === 'MaxKey') {
+        index = serializeMinMax(buffer, key, value, index, true);
+      } else if (typeof value['_bsontype'] !== 'undefined') {
+        throw new TypeError('Unrecognized or invalid _bsontype: ' + value['_bsontype']);
+      }
+    }
+  } else if (object instanceof Map) {
+    var iterator = object.entries();
+    var done = false;
+
+    while (!done) {
+      // Unpack the next entry
+      var entry = iterator.next();
+      done = entry.done;
+      // Are we done, then skip and terminate
+      if (done) continue;
+
+      // Get the entry values
+      key = entry.value[0];
+      value = entry.value[1];
+
+      // Check the type of the value
+      type = typeof value;
+
+      // Check the key and throw error if it's illegal
+      if (typeof key === 'string' && ignoreKeys.indexOf(key) === -1) {
+        if (key.match(regexp) != null) {
+          // The BSON spec doesn't allow keys with null bytes because keys are
+          // null-terminated.
+          throw Error('key ' + key + ' must not contain null bytes');
+        }
+
+        if (checkKeys) {
+          if ('$' === key[0]) {
+            throw Error('key ' + key + " must not start with '$'");
+          } else if (~key.indexOf('.')) {
+            throw Error('key ' + key + " must not contain '.'");
+          }
+        }
+      }
+
+      if (type === 'string') {
+        index = serializeString(buffer, key, value, index);
+      } else if (type === 'number') {
+        index = serializeNumber(buffer, key, value, index);
+      } else if (type === 'boolean') {
+        index = serializeBoolean(buffer, key, value, index);
+      } else if (value instanceof Date || isDate(value)) {
+        index = serializeDate(buffer, key, value, index);
+        // } else if (value === undefined && ignoreUndefined === true) {
+      } else if (value === null || (value === undefined && ignoreUndefined === false)) {
+        index = serializeNull(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') {
+        index = serializeObjectId(buffer, key, value, index);
+      } else if (Buffer.isBuffer(value)) {
+        index = serializeBuffer(buffer, key, value, index);
+      } else if (value instanceof RegExp || isRegExp(value)) {
+        index = serializeRegExp(buffer, key, value, index);
+      } else if (type === 'object' && value['_bsontype'] == null) {
+        index = serializeObject(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          ignoreUndefined,
+          false,
+          path
+        );
+      } else if (type === 'object' && value['_bsontype'] === 'Decimal128') {
+        index = serializeDecimal128(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Long' || value['_bsontype'] === 'Timestamp') {
+        index = serializeLong(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Double') {
+        index = serializeDouble(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Code') {
+        index = serializeCode(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          ignoreUndefined
+        );
+      } else if (typeof value === 'function' && serializeFunctions) {
+        index = serializeFunction(buffer, key, value, index, checkKeys, depth, serializeFunctions);
+      } else if (value['_bsontype'] === 'Binary') {
+        index = serializeBinary(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Symbol') {
+        index = serializeSymbol(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'DBRef') {
+        index = serializeDBRef(buffer, key, value, index, depth, serializeFunctions);
+      } else if (value['_bsontype'] === 'BSONRegExp') {
+        index = serializeBSONRegExp(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Int32') {
+        index = serializeInt32(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'MinKey' || value['_bsontype'] === 'MaxKey') {
+        index = serializeMinMax(buffer, key, value, index);
+      } else if (typeof value['_bsontype'] !== 'undefined') {
+        throw new TypeError('Unrecognized or invalid _bsontype: ' + value['_bsontype']);
+      }
+    }
+  } else {
+    // Did we provide a custom serialization method
+    if (object.toBSON) {
+      if (typeof object.toBSON !== 'function') throw new Error('toBSON is not a function');
+      object = object.toBSON();
+      if (object != null && typeof object !== 'object')
+        throw new Error('toBSON function did not return an object');
+    }
+
+    // Iterate over all the keys
+    for (key in object) {
+      value = object[key];
+      // Is there an override value
+      if (value && value.toBSON) {
+        if (typeof value.toBSON !== 'function') throw new Error('toBSON is not a function');
+        value = value.toBSON();
+      }
+
+      // Check the type of the value
+      type = typeof value;
+
+      // Check the key and throw error if it's illegal
+      if (typeof key === 'string' && ignoreKeys.indexOf(key) === -1) {
+        if (key.match(regexp) != null) {
+          // The BSON spec doesn't allow keys with null bytes because keys are
+          // null-terminated.
+          throw Error('key ' + key + ' must not contain null bytes');
+        }
+
+        if (checkKeys) {
+          if ('$' === key[0]) {
+            throw Error('key ' + key + " must not start with '$'");
+          } else if (~key.indexOf('.')) {
+            throw Error('key ' + key + " must not contain '.'");
+          }
+        }
+      }
+
+      if (type === 'string') {
+        index = serializeString(buffer, key, value, index);
+      } else if (type === 'number') {
+        index = serializeNumber(buffer, key, value, index);
+      } else if (type === 'boolean') {
+        index = serializeBoolean(buffer, key, value, index);
+      } else if (value instanceof Date || isDate(value)) {
+        index = serializeDate(buffer, key, value, index);
+      } else if (value === undefined) {
+        if (ignoreUndefined === false) index = serializeNull(buffer, key, value, index);
+      } else if (value === null) {
+        index = serializeNull(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') {
+        index = serializeObjectId(buffer, key, value, index);
+      } else if (Buffer.isBuffer(value)) {
+        index = serializeBuffer(buffer, key, value, index);
+      } else if (value instanceof RegExp || isRegExp(value)) {
+        index = serializeRegExp(buffer, key, value, index);
+      } else if (type === 'object' && value['_bsontype'] == null) {
+        index = serializeObject(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          ignoreUndefined,
+          false,
+          path
+        );
+      } else if (type === 'object' && value['_bsontype'] === 'Decimal128') {
+        index = serializeDecimal128(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Long' || value['_bsontype'] === 'Timestamp') {
+        index = serializeLong(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Double') {
+        index = serializeDouble(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Code') {
+        index = serializeCode(
+          buffer,
+          key,
+          value,
+          index,
+          checkKeys,
+          depth,
+          serializeFunctions,
+          ignoreUndefined
+        );
+      } else if (typeof value === 'function' && serializeFunctions) {
+        index = serializeFunction(buffer, key, value, index, checkKeys, depth, serializeFunctions);
+      } else if (value['_bsontype'] === 'Binary') {
+        index = serializeBinary(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Symbol') {
+        index = serializeSymbol(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'DBRef') {
+        index = serializeDBRef(buffer, key, value, index, depth, serializeFunctions);
+      } else if (value['_bsontype'] === 'BSONRegExp') {
+        index = serializeBSONRegExp(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'Int32') {
+        index = serializeInt32(buffer, key, value, index);
+      } else if (value['_bsontype'] === 'MinKey' || value['_bsontype'] === 'MaxKey') {
+        index = serializeMinMax(buffer, key, value, index);
+      } else if (typeof value['_bsontype'] !== 'undefined') {
+        throw new TypeError('Unrecognized or invalid _bsontype: ' + value['_bsontype']);
+      }
+    }
+  }
+
+  // Remove the path
+  path.pop();
+
+  // Final padding byte for object
+  buffer[index++] = 0x00;
+
+  // Final size
+  var size = index - startingIndex;
+  // Write the size of the object
+  buffer[startingIndex++] = size & 0xff;
+  buffer[startingIndex++] = (size >> 8) & 0xff;
+  buffer[startingIndex++] = (size >> 16) & 0xff;
+  buffer[startingIndex++] = (size >> 24) & 0xff;
+  return index;
+};
+
+var BSON = {};
+
+/**
+ * Contains the function cache if we have that enable to allow for avoiding the eval step on each deserialization, comparison is by md5
+ *
+ * @ignore
+ * @api private
+ */
+// var functionCache = (BSON.functionCache = {});
+
+/**
+ * Number BSON Type
+ *
+ * @classconstant BSON_DATA_NUMBER
+ **/
+BSON.BSON_DATA_NUMBER = 1;
+/**
+ * String BSON Type
+ *
+ * @classconstant BSON_DATA_STRING
+ **/
+BSON.BSON_DATA_STRING = 2;
+/**
+ * Object BSON Type
+ *
+ * @classconstant BSON_DATA_OBJECT
+ **/
+BSON.BSON_DATA_OBJECT = 3;
+/**
+ * Array BSON Type
+ *
+ * @classconstant BSON_DATA_ARRAY
+ **/
+BSON.BSON_DATA_ARRAY = 4;
+/**
+ * Binary BSON Type
+ *
+ * @classconstant BSON_DATA_BINARY
+ **/
+BSON.BSON_DATA_BINARY = 5;
+/**
+ * ObjectID BSON Type, deprecated
+ *
+ * @classconstant BSON_DATA_UNDEFINED
+ **/
+BSON.BSON_DATA_UNDEFINED = 6;
+/**
+ * ObjectID BSON Type
+ *
+ * @classconstant BSON_DATA_OID
+ **/
+BSON.BSON_DATA_OID = 7;
+/**
+ * Boolean BSON Type
+ *
+ * @classconstant BSON_DATA_BOOLEAN
+ **/
+BSON.BSON_DATA_BOOLEAN = 8;
+/**
+ * Date BSON Type
+ *
+ * @classconstant BSON_DATA_DATE
+ **/
+BSON.BSON_DATA_DATE = 9;
+/**
+ * null BSON Type
+ *
+ * @classconstant BSON_DATA_NULL
+ **/
+BSON.BSON_DATA_NULL = 10;
+/**
+ * RegExp BSON Type
+ *
+ * @classconstant BSON_DATA_REGEXP
+ **/
+BSON.BSON_DATA_REGEXP = 11;
+/**
+ * Code BSON Type
+ *
+ * @classconstant BSON_DATA_CODE
+ **/
+BSON.BSON_DATA_CODE = 13;
+/**
+ * Symbol BSON Type
+ *
+ * @classconstant BSON_DATA_SYMBOL
+ **/
+BSON.BSON_DATA_SYMBOL = 14;
+/**
+ * Code with Scope BSON Type
+ *
+ * @classconstant BSON_DATA_CODE_W_SCOPE
+ **/
+BSON.BSON_DATA_CODE_W_SCOPE = 15;
+/**
+ * 32 bit Integer BSON Type
+ *
+ * @classconstant BSON_DATA_INT
+ **/
+BSON.BSON_DATA_INT = 16;
+/**
+ * Timestamp BSON Type
+ *
+ * @classconstant BSON_DATA_TIMESTAMP
+ **/
+BSON.BSON_DATA_TIMESTAMP = 17;
+/**
+ * Long BSON Type
+ *
+ * @classconstant BSON_DATA_LONG
+ **/
+BSON.BSON_DATA_LONG = 18;
+/**
+ * Long BSON Type
+ *
+ * @classconstant BSON_DATA_DECIMAL128
+ **/
+BSON.BSON_DATA_DECIMAL128 = 19;
+/**
+ * MinKey BSON Type
+ *
+ * @classconstant BSON_DATA_MIN_KEY
+ **/
+BSON.BSON_DATA_MIN_KEY = 0xff;
+/**
+ * MaxKey BSON Type
+ *
+ * @classconstant BSON_DATA_MAX_KEY
+ **/
+BSON.BSON_DATA_MAX_KEY = 0x7f;
+/**
+ * Binary Default Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_DEFAULT
+ **/
+BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0;
+/**
+ * Binary Function Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_FUNCTION
+ **/
+BSON.BSON_BINARY_SUBTYPE_FUNCTION = 1;
+/**
+ * Binary Byte Array Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_BYTE_ARRAY
+ **/
+BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY = 2;
+/**
+ * Binary UUID Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_UUID
+ **/
+BSON.BSON_BINARY_SUBTYPE_UUID = 3;
+/**
+ * Binary MD5 Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_MD5
+ **/
+BSON.BSON_BINARY_SUBTYPE_MD5 = 4;
+/**
+ * Binary User Defined Type
+ *
+ * @classconstant BSON_BINARY_SUBTYPE_USER_DEFINED
+ **/
+BSON.BSON_BINARY_SUBTYPE_USER_DEFINED = 128;
+
+// BSON MAX VALUES
+BSON.BSON_INT32_MAX = 0x7fffffff;
+BSON.BSON_INT32_MIN = -0x80000000;
+
+BSON.BSON_INT64_MAX = Math.pow(2, 63) - 1;
+BSON.BSON_INT64_MIN = -Math.pow(2, 63);
+
+// JS MAX PRECISE VALUES
+BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double.
+BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double.
+
+// Internal long versions
+// var JS_INT_MAX_LONG = Long.fromNumber(0x20000000000000); // Any integer up to 2^53 can be precisely represented by a double.
+// var JS_INT_MIN_LONG = Long.fromNumber(-0x20000000000000); // Any integer down to -2^53 can be precisely represented by a double.
+
+module.exports = serializeInto;
diff --git a/node_modules/bson/lib/bson/parser/utils.js b/node_modules/bson/lib/bson/parser/utils.js
new file mode 100644
index 0000000..6faa439
--- /dev/null
+++ b/node_modules/bson/lib/bson/parser/utils.js
@@ -0,0 +1,28 @@
+'use strict';
+
+/**
+ * Normalizes our expected stringified form of a function across versions of node
+ * @param {Function} fn The function to stringify
+ */
+function normalizedFunctionString(fn) {
+  return fn.toString().replace(/function *\(/, 'function (');
+}
+
+function newBuffer(item, encoding) {
+  return new Buffer(item, encoding);
+}
+
+function allocBuffer() {
+  return Buffer.alloc.apply(Buffer, arguments);
+}
+
+function toBuffer() {
+  return Buffer.from.apply(Buffer, arguments);
+}
+
+module.exports = {
+  normalizedFunctionString: normalizedFunctionString,
+  allocBuffer: typeof Buffer.alloc === 'function' ? allocBuffer : newBuffer,
+  toBuffer: typeof Buffer.from === 'function' ? toBuffer : newBuffer
+};
+
diff --git a/node_modules/bson/lib/bson/regexp.js b/node_modules/bson/lib/bson/regexp.js
new file mode 100644
index 0000000..108f016
--- /dev/null
+++ b/node_modules/bson/lib/bson/regexp.js
@@ -0,0 +1,33 @@
+/**
+ * A class representation of the BSON RegExp type.
+ *
+ * @class
+ * @return {BSONRegExp} A MinKey instance
+ */
+function BSONRegExp(pattern, options) {
+  if (!(this instanceof BSONRegExp)) return new BSONRegExp();
+
+  // Execute
+  this._bsontype = 'BSONRegExp';
+  this.pattern = pattern || '';
+  this.options = options || '';
+
+  // Validate options
+  for (var i = 0; i < this.options.length; i++) {
+    if (
+      !(
+        this.options[i] === 'i' ||
+        this.options[i] === 'm' ||
+        this.options[i] === 'x' ||
+        this.options[i] === 'l' ||
+        this.options[i] === 's' ||
+        this.options[i] === 'u'
+      )
+    ) {
+      throw new Error('the regular expression options [' + this.options[i] + '] is not supported');
+    }
+  }
+}
+
+module.exports = BSONRegExp;
+module.exports.BSONRegExp = BSONRegExp;
diff --git a/node_modules/bson/lib/bson/symbol.js b/node_modules/bson/lib/bson/symbol.js
new file mode 100644
index 0000000..ba20cab
--- /dev/null
+++ b/node_modules/bson/lib/bson/symbol.js
@@ -0,0 +1,50 @@
+// Custom inspect property name / symbol.
+var inspect = Buffer ? require('util').inspect.custom || 'inspect' : 'inspect';
+
+/**
+ * A class representation of the BSON Symbol type.
+ *
+ * @class
+ * @deprecated
+ * @param {string} value the string representing the symbol.
+ * @return {Symbol}
+ */
+function Symbol(value) {
+  if (!(this instanceof Symbol)) return new Symbol(value);
+  this._bsontype = 'Symbol';
+  this.value = value;
+}
+
+/**
+ * Access the wrapped string value.
+ *
+ * @method
+ * @return {String} returns the wrapped string.
+ */
+Symbol.prototype.valueOf = function() {
+  return this.value;
+};
+
+/**
+ * @ignore
+ */
+Symbol.prototype.toString = function() {
+  return this.value;
+};
+
+/**
+ * @ignore
+ */
+Symbol.prototype[inspect] = function() {
+  return this.value;
+};
+
+/**
+ * @ignore
+ */
+Symbol.prototype.toJSON = function() {
+  return this.value;
+};
+
+module.exports = Symbol;
+module.exports.Symbol = Symbol;
diff --git a/node_modules/bson/lib/bson/timestamp.js b/node_modules/bson/lib/bson/timestamp.js
new file mode 100644
index 0000000..dc61a6c
--- /dev/null
+++ b/node_modules/bson/lib/bson/timestamp.js
@@ -0,0 +1,854 @@
+// 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.
+//
+// Copyright 2009 Google Inc. All Rights Reserved
+
+/**
+ * This type is for INTERNAL use in MongoDB only and should not be used in applications.
+ * The appropriate corresponding type is the JavaScript Date type.
+ * 
+ * Defines a Timestamp class for representing a 64-bit two's-complement
+ * integer value, which faithfully simulates the behavior of a Java "Timestamp". This
+ * implementation is derived from TimestampLib in GWT.
+ *
+ * Constructs a 64-bit two's-complement integer, given its low and high 32-bit
+ * values as *signed* integers.  See the from* functions below for more
+ * convenient ways of constructing Timestamps.
+ *
+ * The internal representation of a Timestamp is the two given signed, 32-bit values.
+ * We use 32-bit pieces because these are the size of integers on which
+ * Javascript performs bit-operations.  For operations like addition and
+ * multiplication, we split each number into 16-bit pieces, which can easily be
+ * multiplied within Javascript's floating-point representation without overflow
+ * or change in sign.
+ *
+ * In the algorithms below, we frequently reduce the negative case to the
+ * positive case by negating the input(s) and then post-processing the result.
+ * Note that we must ALWAYS check specially whether those values are MIN_VALUE
+ * (-2^63) because -MIN_VALUE == MIN_VALUE (since 2^63 cannot be represented as
+ * a positive number, it overflows back into a negative).  Not handling this
+ * case would often result in infinite recursion.
+ *
+ * @class
+ * @param {number} low  the low (signed) 32 bits of the Timestamp.
+ * @param {number} high the high (signed) 32 bits of the Timestamp.
+ */
+function Timestamp(low, high) {
+  if (!(this instanceof Timestamp)) return new Timestamp(low, high);
+  this._bsontype = 'Timestamp';
+  /**
+   * @type {number}
+   * @ignore
+   */
+  this.low_ = low | 0; // force into 32 signed bits.
+
+  /**
+   * @type {number}
+   * @ignore
+   */
+  this.high_ = high | 0; // force into 32 signed bits.
+}
+
+/**
+ * Return the int value.
+ *
+ * @return {number} the value, assuming it is a 32-bit integer.
+ */
+Timestamp.prototype.toInt = function() {
+  return this.low_;
+};
+
+/**
+ * Return the Number value.
+ *
+ * @method
+ * @return {number} the closest floating-point representation to this value.
+ */
+Timestamp.prototype.toNumber = function() {
+  return this.high_ * Timestamp.TWO_PWR_32_DBL_ + this.getLowBitsUnsigned();
+};
+
+/**
+ * Return the JSON value.
+ *
+ * @method
+ * @return {string} the JSON representation.
+ */
+Timestamp.prototype.toJSON = function() {
+  return this.toString();
+};
+
+/**
+ * Return the String value.
+ *
+ * @method
+ * @param {number} [opt_radix] the radix in which the text should be written.
+ * @return {string} the textual representation of this value.
+ */
+Timestamp.prototype.toString = function(opt_radix) {
+  var radix = opt_radix || 10;
+  if (radix < 2 || 36 < radix) {
+    throw Error('radix out of range: ' + radix);
+  }
+
+  if (this.isZero()) {
+    return '0';
+  }
+
+  if (this.isNegative()) {
+    if (this.equals(Timestamp.MIN_VALUE)) {
+      // We need to change the Timestamp value before it can be negated, so we remove
+      // the bottom-most digit in this base and then recurse to do the rest.
+      var radixTimestamp = Timestamp.fromNumber(radix);
+      var div = this.div(radixTimestamp);
+      var rem = div.multiply(radixTimestamp).subtract(this);
+      return div.toString(radix) + rem.toInt().toString(radix);
+    } else {
+      return '-' + this.negate().toString(radix);
+    }
+  }
+
+  // Do several (6) digits each time through the loop, so as to
+  // minimize the calls to the very expensive emulated div.
+  var radixToPower = Timestamp.fromNumber(Math.pow(radix, 6));
+
+  rem = this;
+  var result = '';
+
+  while (!rem.isZero()) {
+    var remDiv = rem.div(radixToPower);
+    var intval = rem.subtract(remDiv.multiply(radixToPower)).toInt();
+    var digits = intval.toString(radix);
+
+    rem = remDiv;
+    if (rem.isZero()) {
+      return digits + result;
+    } else {
+      while (digits.length < 6) {
+        digits = '0' + digits;
+      }
+      result = '' + digits + result;
+    }
+  }
+};
+
+/**
+ * Return the high 32-bits value.
+ *
+ * @method
+ * @return {number} the high 32-bits as a signed value.
+ */
+Timestamp.prototype.getHighBits = function() {
+  return this.high_;
+};
+
+/**
+ * Return the low 32-bits value.
+ *
+ * @method
+ * @return {number} the low 32-bits as a signed value.
+ */
+Timestamp.prototype.getLowBits = function() {
+  return this.low_;
+};
+
+/**
+ * Return the low unsigned 32-bits value.
+ *
+ * @method
+ * @return {number} the low 32-bits as an unsigned value.
+ */
+Timestamp.prototype.getLowBitsUnsigned = function() {
+  return this.low_ >= 0 ? this.low_ : Timestamp.TWO_PWR_32_DBL_ + this.low_;
+};
+
+/**
+ * Returns the number of bits needed to represent the absolute value of this Timestamp.
+ *
+ * @method
+ * @return {number} Returns the number of bits needed to represent the absolute value of this Timestamp.
+ */
+Timestamp.prototype.getNumBitsAbs = function() {
+  if (this.isNegative()) {
+    if (this.equals(Timestamp.MIN_VALUE)) {
+      return 64;
+    } else {
+      return this.negate().getNumBitsAbs();
+    }
+  } else {
+    var val = this.high_ !== 0 ? this.high_ : this.low_;
+    for (var bit = 31; bit > 0; bit--) {
+      if ((val & (1 << bit)) !== 0) {
+        break;
+      }
+    }
+    return this.high_ !== 0 ? bit + 33 : bit + 1;
+  }
+};
+
+/**
+ * Return whether this value is zero.
+ *
+ * @method
+ * @return {boolean} whether this value is zero.
+ */
+Timestamp.prototype.isZero = function() {
+  return this.high_ === 0 && this.low_ === 0;
+};
+
+/**
+ * Return whether this value is negative.
+ *
+ * @method
+ * @return {boolean} whether this value is negative.
+ */
+Timestamp.prototype.isNegative = function() {
+  return this.high_ < 0;
+};
+
+/**
+ * Return whether this value is odd.
+ *
+ * @method
+ * @return {boolean} whether this value is odd.
+ */
+Timestamp.prototype.isOdd = function() {
+  return (this.low_ & 1) === 1;
+};
+
+/**
+ * Return whether this Timestamp equals the other
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} whether this Timestamp equals the other
+ */
+Timestamp.prototype.equals = function(other) {
+  return this.high_ === other.high_ && this.low_ === other.low_;
+};
+
+/**
+ * Return whether this Timestamp does not equal the other.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} whether this Timestamp does not equal the other.
+ */
+Timestamp.prototype.notEquals = function(other) {
+  return this.high_ !== other.high_ || this.low_ !== other.low_;
+};
+
+/**
+ * Return whether this Timestamp is less than the other.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} whether this Timestamp is less than the other.
+ */
+Timestamp.prototype.lessThan = function(other) {
+  return this.compare(other) < 0;
+};
+
+/**
+ * Return whether this Timestamp is less than or equal to the other.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} whether this Timestamp is less than or equal to the other.
+ */
+Timestamp.prototype.lessThanOrEqual = function(other) {
+  return this.compare(other) <= 0;
+};
+
+/**
+ * Return whether this Timestamp is greater than the other.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} whether this Timestamp is greater than the other.
+ */
+Timestamp.prototype.greaterThan = function(other) {
+  return this.compare(other) > 0;
+};
+
+/**
+ * Return whether this Timestamp is greater than or equal to the other.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} whether this Timestamp is greater than or equal to the other.
+ */
+Timestamp.prototype.greaterThanOrEqual = function(other) {
+  return this.compare(other) >= 0;
+};
+
+/**
+ * Compares this Timestamp with the given one.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to compare against.
+ * @return {boolean} 0 if they are the same, 1 if the this is greater, and -1 if the given one is greater.
+ */
+Timestamp.prototype.compare = function(other) {
+  if (this.equals(other)) {
+    return 0;
+  }
+
+  var thisNeg = this.isNegative();
+  var otherNeg = other.isNegative();
+  if (thisNeg && !otherNeg) {
+    return -1;
+  }
+  if (!thisNeg && otherNeg) {
+    return 1;
+  }
+
+  // at this point, the signs are the same, so subtraction will not overflow
+  if (this.subtract(other).isNegative()) {
+    return -1;
+  } else {
+    return 1;
+  }
+};
+
+/**
+ * The negation of this value.
+ *
+ * @method
+ * @return {Timestamp} the negation of this value.
+ */
+Timestamp.prototype.negate = function() {
+  if (this.equals(Timestamp.MIN_VALUE)) {
+    return Timestamp.MIN_VALUE;
+  } else {
+    return this.not().add(Timestamp.ONE);
+  }
+};
+
+/**
+ * Returns the sum of this and the given Timestamp.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to add to this one.
+ * @return {Timestamp} the sum of this and the given Timestamp.
+ */
+Timestamp.prototype.add = function(other) {
+  // Divide each number into 4 chunks of 16 bits, and then sum the chunks.
+
+  var a48 = this.high_ >>> 16;
+  var a32 = this.high_ & 0xffff;
+  var a16 = this.low_ >>> 16;
+  var a00 = this.low_ & 0xffff;
+
+  var b48 = other.high_ >>> 16;
+  var b32 = other.high_ & 0xffff;
+  var b16 = other.low_ >>> 16;
+  var b00 = other.low_ & 0xffff;
+
+  var c48 = 0,
+    c32 = 0,
+    c16 = 0,
+    c00 = 0;
+  c00 += a00 + b00;
+  c16 += c00 >>> 16;
+  c00 &= 0xffff;
+  c16 += a16 + b16;
+  c32 += c16 >>> 16;
+  c16 &= 0xffff;
+  c32 += a32 + b32;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c48 += a48 + b48;
+  c48 &= 0xffff;
+  return Timestamp.fromBits((c16 << 16) | c00, (c48 << 16) | c32);
+};
+
+/**
+ * Returns the difference of this and the given Timestamp.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to subtract from this.
+ * @return {Timestamp} the difference of this and the given Timestamp.
+ */
+Timestamp.prototype.subtract = function(other) {
+  return this.add(other.negate());
+};
+
+/**
+ * Returns the product of this and the given Timestamp.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp to multiply with this.
+ * @return {Timestamp} the product of this and the other.
+ */
+Timestamp.prototype.multiply = function(other) {
+  if (this.isZero()) {
+    return Timestamp.ZERO;
+  } else if (other.isZero()) {
+    return Timestamp.ZERO;
+  }
+
+  if (this.equals(Timestamp.MIN_VALUE)) {
+    return other.isOdd() ? Timestamp.MIN_VALUE : Timestamp.ZERO;
+  } else if (other.equals(Timestamp.MIN_VALUE)) {
+    return this.isOdd() ? Timestamp.MIN_VALUE : Timestamp.ZERO;
+  }
+
+  if (this.isNegative()) {
+    if (other.isNegative()) {
+      return this.negate().multiply(other.negate());
+    } else {
+      return this.negate()
+        .multiply(other)
+        .negate();
+    }
+  } else if (other.isNegative()) {
+    return this.multiply(other.negate()).negate();
+  }
+
+  // If both Timestamps are small, use float multiplication
+  if (this.lessThan(Timestamp.TWO_PWR_24_) && other.lessThan(Timestamp.TWO_PWR_24_)) {
+    return Timestamp.fromNumber(this.toNumber() * other.toNumber());
+  }
+
+  // Divide each Timestamp into 4 chunks of 16 bits, and then add up 4x4 products.
+  // We can skip products that would overflow.
+
+  var a48 = this.high_ >>> 16;
+  var a32 = this.high_ & 0xffff;
+  var a16 = this.low_ >>> 16;
+  var a00 = this.low_ & 0xffff;
+
+  var b48 = other.high_ >>> 16;
+  var b32 = other.high_ & 0xffff;
+  var b16 = other.low_ >>> 16;
+  var b00 = other.low_ & 0xffff;
+
+  var c48 = 0,
+    c32 = 0,
+    c16 = 0,
+    c00 = 0;
+  c00 += a00 * b00;
+  c16 += c00 >>> 16;
+  c00 &= 0xffff;
+  c16 += a16 * b00;
+  c32 += c16 >>> 16;
+  c16 &= 0xffff;
+  c16 += a00 * b16;
+  c32 += c16 >>> 16;
+  c16 &= 0xffff;
+  c32 += a32 * b00;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c32 += a16 * b16;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c32 += a00 * b32;
+  c48 += c32 >>> 16;
+  c32 &= 0xffff;
+  c48 += a48 * b00 + a32 * b16 + a16 * b32 + a00 * b48;
+  c48 &= 0xffff;
+  return Timestamp.fromBits((c16 << 16) | c00, (c48 << 16) | c32);
+};
+
+/**
+ * Returns this Timestamp divided by the given one.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp by which to divide.
+ * @return {Timestamp} this Timestamp divided by the given one.
+ */
+Timestamp.prototype.div = function(other) {
+  if (other.isZero()) {
+    throw Error('division by zero');
+  } else if (this.isZero()) {
+    return Timestamp.ZERO;
+  }
+
+  if (this.equals(Timestamp.MIN_VALUE)) {
+    if (other.equals(Timestamp.ONE) || other.equals(Timestamp.NEG_ONE)) {
+      return Timestamp.MIN_VALUE; // recall that -MIN_VALUE == MIN_VALUE
+    } else if (other.equals(Timestamp.MIN_VALUE)) {
+      return Timestamp.ONE;
+    } else {
+      // At this point, we have |other| >= 2, so |this/other| < |MIN_VALUE|.
+      var halfThis = this.shiftRight(1);
+      var approx = halfThis.div(other).shiftLeft(1);
+      if (approx.equals(Timestamp.ZERO)) {
+        return other.isNegative() ? Timestamp.ONE : Timestamp.NEG_ONE;
+      } else {
+        var rem = this.subtract(other.multiply(approx));
+        var result = approx.add(rem.div(other));
+        return result;
+      }
+    }
+  } else if (other.equals(Timestamp.MIN_VALUE)) {
+    return Timestamp.ZERO;
+  }
+
+  if (this.isNegative()) {
+    if (other.isNegative()) {
+      return this.negate().div(other.negate());
+    } else {
+      return this.negate()
+        .div(other)
+        .negate();
+    }
+  } else if (other.isNegative()) {
+    return this.div(other.negate()).negate();
+  }
+
+  // Repeat the following until the remainder is less than other:  find a
+  // floating-point that approximates remainder / other *from below*, add this
+  // into the result, and subtract it from the remainder.  It is critical that
+  // the approximate value is less than or equal to the real value so that the
+  // remainder never becomes negative.
+  var res = Timestamp.ZERO;
+  rem = this;
+  while (rem.greaterThanOrEqual(other)) {
+    // Approximate the result of division. This may be a little greater or
+    // smaller than the actual value.
+    approx = Math.max(1, Math.floor(rem.toNumber() / other.toNumber()));
+
+    // We will tweak the approximate result by changing it in the 48-th digit or
+    // the smallest non-fractional digit, whichever is larger.
+    var log2 = Math.ceil(Math.log(approx) / Math.LN2);
+    var delta = log2 <= 48 ? 1 : Math.pow(2, log2 - 48);
+
+    // Decrease the approximation until it is smaller than the remainder.  Note
+    // that if it is too large, the product overflows and is negative.
+    var approxRes = Timestamp.fromNumber(approx);
+    var approxRem = approxRes.multiply(other);
+    while (approxRem.isNegative() || approxRem.greaterThan(rem)) {
+      approx -= delta;
+      approxRes = Timestamp.fromNumber(approx);
+      approxRem = approxRes.multiply(other);
+    }
+
+    // We know the answer can't be zero... and actually, zero would cause
+    // infinite recursion since we would make no progress.
+    if (approxRes.isZero()) {
+      approxRes = Timestamp.ONE;
+    }
+
+    res = res.add(approxRes);
+    rem = rem.subtract(approxRem);
+  }
+  return res;
+};
+
+/**
+ * Returns this Timestamp modulo the given one.
+ *
+ * @method
+ * @param {Timestamp} other Timestamp by which to mod.
+ * @return {Timestamp} this Timestamp modulo the given one.
+ */
+Timestamp.prototype.modulo = function(other) {
+  return this.subtract(this.div(other).multiply(other));
+};
+
+/**
+ * The bitwise-NOT of this value.
+ *
+ * @method
+ * @return {Timestamp} the bitwise-NOT of this value.
+ */
+Timestamp.prototype.not = function() {
+  return Timestamp.fromBits(~this.low_, ~this.high_);
+};
+
+/**
+ * Returns the bitwise-AND of this Timestamp and the given one.
+ *
+ * @method
+ * @param {Timestamp} other the Timestamp with which to AND.
+ * @return {Timestamp} the bitwise-AND of this and the other.
+ */
+Timestamp.prototype.and = function(other) {
+  return Timestamp.fromBits(this.low_ & other.low_, this.high_ & other.high_);
+};
+
+/**
+ * Returns the bitwise-OR of this Timestamp and the given one.
+ *
+ * @method
+ * @param {Timestamp} other the Timestamp with which to OR.
+ * @return {Timestamp} the bitwise-OR of this and the other.
+ */
+Timestamp.prototype.or = function(other) {
+  return Timestamp.fromBits(this.low_ | other.low_, this.high_ | other.high_);
+};
+
+/**
+ * Returns the bitwise-XOR of this Timestamp and the given one.
+ *
+ * @method
+ * @param {Timestamp} other the Timestamp with which to XOR.
+ * @return {Timestamp} the bitwise-XOR of this and the other.
+ */
+Timestamp.prototype.xor = function(other) {
+  return Timestamp.fromBits(this.low_ ^ other.low_, this.high_ ^ other.high_);
+};
+
+/**
+ * Returns this Timestamp with bits shifted to the left by the given amount.
+ *
+ * @method
+ * @param {number} numBits the number of bits by which to shift.
+ * @return {Timestamp} this shifted to the left by the given amount.
+ */
+Timestamp.prototype.shiftLeft = function(numBits) {
+  numBits &= 63;
+  if (numBits === 0) {
+    return this;
+  } else {
+    var low = this.low_;
+    if (numBits < 32) {
+      var high = this.high_;
+      return Timestamp.fromBits(low << numBits, (high << numBits) | (low >>> (32 - numBits)));
+    } else {
+      return Timestamp.fromBits(0, low << (numBits - 32));
+    }
+  }
+};
+
+/**
+ * Returns this Timestamp with bits shifted to the right by the given amount.
+ *
+ * @method
+ * @param {number} numBits the number of bits by which to shift.
+ * @return {Timestamp} this shifted to the right by the given amount.
+ */
+Timestamp.prototype.shiftRight = function(numBits) {
+  numBits &= 63;
+  if (numBits === 0) {
+    return this;
+  } else {
+    var high = this.high_;
+    if (numBits < 32) {
+      var low = this.low_;
+      return Timestamp.fromBits((low >>> numBits) | (high << (32 - numBits)), high >> numBits);
+    } else {
+      return Timestamp.fromBits(high >> (numBits - 32), high >= 0 ? 0 : -1);
+    }
+  }
+};
+
+/**
+ * Returns this Timestamp with bits shifted to the right by the given amount, with the new top bits matching the current sign bit.
+ *
+ * @method
+ * @param {number} numBits the number of bits by which to shift.
+ * @return {Timestamp} this shifted to the right by the given amount, with zeros placed into the new leading bits.
+ */
+Timestamp.prototype.shiftRightUnsigned = function(numBits) {
+  numBits &= 63;
+  if (numBits === 0) {
+    return this;
+  } else {
+    var high = this.high_;
+    if (numBits < 32) {
+      var low = this.low_;
+      return Timestamp.fromBits((low >>> numBits) | (high << (32 - numBits)), high >>> numBits);
+    } else if (numBits === 32) {
+      return Timestamp.fromBits(high, 0);
+    } else {
+      return Timestamp.fromBits(high >>> (numBits - 32), 0);
+    }
+  }
+};
+
+/**
+ * Returns a Timestamp representing the given (32-bit) integer value.
+ *
+ * @method
+ * @param {number} value the 32-bit integer in question.
+ * @return {Timestamp} the corresponding Timestamp value.
+ */
+Timestamp.fromInt = function(value) {
+  if (-128 <= value && value < 128) {
+    var cachedObj = Timestamp.INT_CACHE_[value];
+    if (cachedObj) {
+      return cachedObj;
+    }
+  }
+
+  var obj = new Timestamp(value | 0, value < 0 ? -1 : 0);
+  if (-128 <= value && value < 128) {
+    Timestamp.INT_CACHE_[value] = obj;
+  }
+  return obj;
+};
+
+/**
+ * Returns a Timestamp representing the given value, provided that it is a finite number. Otherwise, zero is returned.
+ *
+ * @method
+ * @param {number} value the number in question.
+ * @return {Timestamp} the corresponding Timestamp value.
+ */
+Timestamp.fromNumber = function(value) {
+  if (isNaN(value) || !isFinite(value)) {
+    return Timestamp.ZERO;
+  } else if (value <= -Timestamp.TWO_PWR_63_DBL_) {
+    return Timestamp.MIN_VALUE;
+  } else if (value + 1 >= Timestamp.TWO_PWR_63_DBL_) {
+    return Timestamp.MAX_VALUE;
+  } else if (value < 0) {
+    return Timestamp.fromNumber(-value).negate();
+  } else {
+    return new Timestamp(
+      (value % Timestamp.TWO_PWR_32_DBL_) | 0,
+      (value / Timestamp.TWO_PWR_32_DBL_) | 0
+    );
+  }
+};
+
+/**
+ * Returns a Timestamp representing the 64-bit integer that comes by concatenating the given high and low bits. Each is assumed to use 32 bits.
+ *
+ * @method
+ * @param {number} lowBits the low 32-bits.
+ * @param {number} highBits the high 32-bits.
+ * @return {Timestamp} the corresponding Timestamp value.
+ */
+Timestamp.fromBits = function(lowBits, highBits) {
+  return new Timestamp(lowBits, highBits);
+};
+
+/**
+ * Returns a Timestamp representation of the given string, written using the given radix.
+ *
+ * @method
+ * @param {string} str the textual representation of the Timestamp.
+ * @param {number} opt_radix the radix in which the text is written.
+ * @return {Timestamp} the corresponding Timestamp value.
+ */
+Timestamp.fromString = function(str, opt_radix) {
+  if (str.length === 0) {
+    throw Error('number format error: empty string');
+  }
+
+  var radix = opt_radix || 10;
+  if (radix < 2 || 36 < radix) {
+    throw Error('radix out of range: ' + radix);
+  }
+
+  if (str.charAt(0) === '-') {
+    return Timestamp.fromString(str.substring(1), radix).negate();
+  } else if (str.indexOf('-') >= 0) {
+    throw Error('number format error: interior "-" character: ' + str);
+  }
+
+  // Do several (8) digits each time through the loop, so as to
+  // minimize the calls to the very expensive emulated div.
+  var radixToPower = Timestamp.fromNumber(Math.pow(radix, 8));
+
+  var result = Timestamp.ZERO;
+  for (var i = 0; i < str.length; i += 8) {
+    var size = Math.min(8, str.length - i);
+    var value = parseInt(str.substring(i, i + size), radix);
+    if (size < 8) {
+      var power = Timestamp.fromNumber(Math.pow(radix, size));
+      result = result.multiply(power).add(Timestamp.fromNumber(value));
+    } else {
+      result = result.multiply(radixToPower);
+      result = result.add(Timestamp.fromNumber(value));
+    }
+  }
+  return result;
+};
+
+// NOTE: Common constant values ZERO, ONE, NEG_ONE, etc. are defined below the
+// from* methods on which they depend.
+
+/**
+ * A cache of the Timestamp representations of small integer values.
+ * @type {Object}
+ * @ignore
+ */
+Timestamp.INT_CACHE_ = {};
+
+// NOTE: the compiler should inline these constant values below and then remove
+// these variables, so there should be no runtime penalty for these.
+
+/**
+ * Number used repeated below in calculations.  This must appear before the
+ * first call to any from* function below.
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_16_DBL_ = 1 << 16;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_24_DBL_ = 1 << 24;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_32_DBL_ = Timestamp.TWO_PWR_16_DBL_ * Timestamp.TWO_PWR_16_DBL_;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_31_DBL_ = Timestamp.TWO_PWR_32_DBL_ / 2;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_48_DBL_ = Timestamp.TWO_PWR_32_DBL_ * Timestamp.TWO_PWR_16_DBL_;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_64_DBL_ = Timestamp.TWO_PWR_32_DBL_ * Timestamp.TWO_PWR_32_DBL_;
+
+/**
+ * @type {number}
+ * @ignore
+ */
+Timestamp.TWO_PWR_63_DBL_ = Timestamp.TWO_PWR_64_DBL_ / 2;
+
+/** @type {Timestamp} */
+Timestamp.ZERO = Timestamp.fromInt(0);
+
+/** @type {Timestamp} */
+Timestamp.ONE = Timestamp.fromInt(1);
+
+/** @type {Timestamp} */
+Timestamp.NEG_ONE = Timestamp.fromInt(-1);
+
+/** @type {Timestamp} */
+Timestamp.MAX_VALUE = Timestamp.fromBits(0xffffffff | 0, 0x7fffffff | 0);
+
+/** @type {Timestamp} */
+Timestamp.MIN_VALUE = Timestamp.fromBits(0, 0x80000000 | 0);
+
+/**
+ * @type {Timestamp}
+ * @ignore
+ */
+Timestamp.TWO_PWR_24_ = Timestamp.fromInt(1 << 24);
+
+/**
+ * Expose.
+ */
+module.exports = Timestamp;
+module.exports.Timestamp = Timestamp;