some progress

node_modules/mongoose/lib/schema/SubdocumentPath.js

@@ -0,0 +1,366 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+const CastError = require('../error/cast');
+const EventEmitter = require('events').EventEmitter;
+const ObjectExpectedError = require('../error/objectExpected');
+const SchemaSubdocumentOptions = require('../options/SchemaSubdocumentOptions');
+const SchemaType = require('../schematype');
+const applyDefaults = require('../helpers/document/applyDefaults');
+const $exists = require('./operators/exists');
+const castToNumber = require('./operators/helpers').castToNumber;
+const discriminator = require('../helpers/model/discriminator');
+const geospatial = require('./operators/geospatial');
+const getConstructor = require('../helpers/discriminator/getConstructor');
+const handleIdOption = require('../helpers/schema/handleIdOption');
+const internalToObjectOptions = require('../options').internalToObjectOptions;
+const utils = require('../utils');
+
+let Subdocument;
+
+module.exports = SubdocumentPath;
+
+/**
+ * Single nested subdocument SchemaType constructor.
+ *
+ * @param {Schema} schema
+ * @param {String} path
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SubdocumentPath(schema, path, options) {
+  const schemaTypeIdOption = SubdocumentPath.defaultOptions &&
+    SubdocumentPath.defaultOptions._id;
+  if (schemaTypeIdOption != null) {
+    options = options || {};
+    options._id = schemaTypeIdOption;
+  }
+
+  schema = handleIdOption(schema, options);
+
+  this.caster = _createConstructor(schema);
+  this.caster.path = path;
+  this.caster.prototype.$basePath = path;
+  this.schema = schema;
+  this.$isSingleNested = true;
+  this.base = schema.base;
+  SchemaType.call(this, path, options, 'Embedded');
+}
+
+/*!
+ * ignore
+ */
+
+SubdocumentPath.prototype = Object.create(SchemaType.prototype);
+SubdocumentPath.prototype.constructor = SubdocumentPath;
+SubdocumentPath.prototype.OptionsConstructor = SchemaSubdocumentOptions;
+
+/*!
+ * ignore
+ */
+
+function _createConstructor(schema, baseClass) {
+  // lazy load
+  Subdocument || (Subdocument = require('../types/subdocument'));
+
+  const _embedded = function SingleNested(value, path, parent) {
+    this.$__parent = parent;
+    Subdocument.apply(this, arguments);
+
+    if (parent == null) {
+      return;
+    }
+    this.$session(parent.$session());
+  };
+
+  schema._preCompile();
+
+  const proto = baseClass != null ? baseClass.prototype : Subdocument.prototype;
+  _embedded.prototype = Object.create(proto);
+  _embedded.prototype.$__setSchema(schema);
+  _embedded.prototype.constructor = _embedded;
+  _embedded.schema = schema;
+  _embedded.$isSingleNested = true;
+  _embedded.events = new EventEmitter();
+  _embedded.prototype.toBSON = function() {
+    return this.toObject(internalToObjectOptions);
+  };
+
+  // apply methods
+  for (const i in schema.methods) {
+    _embedded.prototype[i] = schema.methods[i];
+  }
+
+  // apply statics
+  for (const i in schema.statics) {
+    _embedded[i] = schema.statics[i];
+  }
+
+  for (const i in EventEmitter.prototype) {
+    _embedded[i] = EventEmitter.prototype[i];
+  }
+
+  return _embedded;
+}
+
+/**
+ * Special case for when users use a common location schema to represent
+ * locations for use with $geoWithin.
+ * https://www.mongodb.com/docs/manual/reference/operator/query/geoWithin/
+ *
+ * @param {Object} val
+ * @api private
+ */
+
+SubdocumentPath.prototype.$conditionalHandlers.$geoWithin = function handle$geoWithin(val, context) {
+  return { $geometry: this.castForQuery(null, val.$geometry, context) };
+};
+
+/*!
+ * ignore
+ */
+
+SubdocumentPath.prototype.$conditionalHandlers.$near =
+SubdocumentPath.prototype.$conditionalHandlers.$nearSphere = geospatial.cast$near;
+
+SubdocumentPath.prototype.$conditionalHandlers.$within =
+SubdocumentPath.prototype.$conditionalHandlers.$geoWithin = geospatial.cast$within;
+
+SubdocumentPath.prototype.$conditionalHandlers.$geoIntersects =
+  geospatial.cast$geoIntersects;
+
+SubdocumentPath.prototype.$conditionalHandlers.$minDistance = castToNumber;
+SubdocumentPath.prototype.$conditionalHandlers.$maxDistance = castToNumber;
+
+SubdocumentPath.prototype.$conditionalHandlers.$exists = $exists;
+
+/**
+ * Casts contents
+ *
+ * @param {Object} value
+ * @api private
+ */
+
+SubdocumentPath.prototype.cast = function(val, doc, init, priorVal, options) {
+  if (val && val.$isSingleNested && val.parent === doc) {
+    return val;
+  }
+
+  if (val != null && (typeof val !== 'object' || Array.isArray(val))) {
+    throw new ObjectExpectedError(this.path, val);
+  }
+
+  const Constructor = getConstructor(this.caster, val);
+
+  let subdoc;
+
+  // Only pull relevant selected paths and pull out the base path
+  const parentSelected = doc && doc.$__ && doc.$__.selected || {};
+  const path = this.path;
+  const selected = Object.keys(parentSelected).reduce((obj, key) => {
+    if (key.startsWith(path + '.')) {
+      obj = obj || {};
+      obj[key.substring(path.length + 1)] = parentSelected[key];
+    }
+    return obj;
+  }, null);
+  options = Object.assign({}, options, { priorDoc: priorVal });
+  if (init) {
+    subdoc = new Constructor(void 0, selected, doc, false, { defaults: false });
+    delete subdoc.$__.defaults;
+    subdoc.$init(val);
+    applyDefaults(subdoc, selected);
+  } else {
+    if (Object.keys(val).length === 0) {
+      return new Constructor({}, selected, doc, undefined, options);
+    }
+
+    return new Constructor(val, selected, doc, undefined, options);
+  }
+
+  return subdoc;
+};
+
+/**
+ * Casts contents for query
+ *
+ * @param {string} [$conditional] optional query operator (like `$eq` or `$in`)
+ * @param {any} value
+ * @api private
+ */
+
+SubdocumentPath.prototype.castForQuery = function($conditional, val, context, options) {
+  let handler;
+  if ($conditional != null) {
+    handler = this.$conditionalHandlers[$conditional];
+    if (!handler) {
+      throw new Error('Can\'t use ' + $conditional);
+    }
+    return handler.call(this, val);
+  }
+  if (val == null) {
+    return val;
+  }
+
+  if (this.options.runSetters) {
+    val = this._applySetters(val, context);
+  }
+
+  const Constructor = getConstructor(this.caster, val);
+  const overrideStrict = options != null && options.strict != null ?
+    options.strict :
+    void 0;
+
+  try {
+    val = new Constructor(val, overrideStrict);
+  } catch (error) {
+    // Make sure we always wrap in a CastError (gh-6803)
+    if (!(error instanceof CastError)) {
+      throw new CastError('Embedded', val, this.path, error, this);
+    }
+    throw error;
+  }
+  return val;
+};
+
+/**
+ * Async validation on this single nested doc.
+ *
+ * @api private
+ */
+
+SubdocumentPath.prototype.doValidate = function(value, fn, scope, options) {
+  const Constructor = getConstructor(this.caster, value);
+
+  if (value && !(value instanceof Constructor)) {
+    value = new Constructor(value, null, (scope != null && scope.$__ != null) ? scope : null);
+  }
+
+  if (options && options.skipSchemaValidators) {
+    if (!value) {
+      return fn(null);
+    }
+    return value.validate().then(() => fn(null), err => fn(err));
+  }
+
+  SchemaType.prototype.doValidate.call(this, value, function(error) {
+    if (error) {
+      return fn(error);
+    }
+    if (!value) {
+      return fn(null);
+    }
+
+    value.validate().then(() => fn(null), err => fn(err));
+  }, scope, options);
+};
+
+/**
+ * Synchronously validate this single nested doc
+ *
+ * @api private
+ */
+
+SubdocumentPath.prototype.doValidateSync = function(value, scope, options) {
+  if (!options || !options.skipSchemaValidators) {
+    const schemaTypeError = SchemaType.prototype.doValidateSync.call(this, value, scope);
+    if (schemaTypeError) {
+      return schemaTypeError;
+    }
+  }
+  if (!value) {
+    return;
+  }
+  return value.validateSync();
+};
+
+/**
+ * Adds a discriminator to this single nested subdocument.
+ *
+ * #### Example:
+ *
+ *     const shapeSchema = Schema({ name: String }, { discriminatorKey: 'kind' });
+ *     const schema = Schema({ shape: shapeSchema });
+ *
+ *     const singleNestedPath = parentSchema.path('shape');
+ *     singleNestedPath.discriminator('Circle', Schema({ radius: Number }));
+ *
+ * @param {String} name
+ * @param {Schema} schema fields to add to the schema for instances of this sub-class
+ * @param {Object|string} [options] If string, same as `options.value`.
+ * @param {String} [options.value] the string stored in the `discriminatorKey` property. If not specified, Mongoose uses the `name` parameter.
+ * @param {Boolean} [options.clone=true] By default, `discriminator()` clones the given `schema`. Set to `false` to skip cloning.
+ * @return {Function} the constructor Mongoose will use for creating instances of this discriminator model
+ * @see discriminators /docs/discriminators.html
+ * @api public
+ */
+
+SubdocumentPath.prototype.discriminator = function(name, schema, options) {
+  options = options || {};
+  const value = utils.isPOJO(options) ? options.value : options;
+  const clone = typeof options.clone === 'boolean'
+    ? options.clone
+    : true;
+
+  if (schema.instanceOfSchema && clone) {
+    schema = schema.clone();
+  }
+
+  schema = discriminator(this.caster, name, schema, value);
+
+  this.caster.discriminators[name] = _createConstructor(schema, this.caster);
+
+  return this.caster.discriminators[name];
+};
+
+/*!
+ * ignore
+ */
+
+SubdocumentPath.defaultOptions = {};
+
+/**
+ * Sets a default option for all SubdocumentPath instances.
+ *
+ * #### Example:
+ *
+ *     // Make all numbers have option `min` equal to 0.
+ *     mongoose.Schema.SubdocumentPath.set('required', true);
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {void}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SubdocumentPath.set = SchemaType.set;
+
+/*!
+ * ignore
+ */
+
+SubdocumentPath.prototype.toJSON = function toJSON() {
+  return { path: this.path, options: this.options };
+};
+
+/*!
+ * ignore
+ */
+
+SubdocumentPath.prototype.clone = function() {
+  const options = Object.assign({}, this.options);
+  const schematype = new this.constructor(this.schema, this.path, options);
+  schematype.validators = this.validators.slice();
+  if (this.requiredValidator !== undefined) {
+    schematype.requiredValidator = this.requiredValidator;
+  }
+  schematype.caster.discriminators = Object.assign({}, this.caster.discriminators);
+  return schematype;
+};

node_modules/mongoose/lib/schema/array.js

@@ -0,0 +1,675 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+const $exists = require('./operators/exists');
+const $type = require('./operators/type');
+const MongooseError = require('../error/mongooseError');
+const SchemaArrayOptions = require('../options/SchemaArrayOptions');
+const SchemaType = require('../schematype');
+const CastError = SchemaType.CastError;
+const Mixed = require('./mixed');
+const arrayDepth = require('../helpers/arrayDepth');
+const cast = require('../cast');
+const clone = require('../helpers/clone');
+const isOperator = require('../helpers/query/isOperator');
+const util = require('util');
+const utils = require('../utils');
+const castToNumber = require('./operators/helpers').castToNumber;
+const geospatial = require('./operators/geospatial');
+const getDiscriminatorByValue = require('../helpers/discriminator/getDiscriminatorByValue');
+
+let MongooseArray;
+let EmbeddedDoc;
+
+const isNestedArraySymbol = Symbol('mongoose#isNestedArray');
+const emptyOpts = Object.freeze({});
+
+/**
+ * Array SchemaType constructor
+ *
+ * @param {String} key
+ * @param {SchemaType} cast
+ * @param {Object} options
+ * @param {Object} schemaOptions
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaArray(key, cast, options, schemaOptions) {
+  // lazy load
+  EmbeddedDoc || (EmbeddedDoc = require('../types').Embedded);
+
+  let typeKey = 'type';
+  if (schemaOptions && schemaOptions.typeKey) {
+    typeKey = schemaOptions.typeKey;
+  }
+  this.schemaOptions = schemaOptions;
+
+  if (cast) {
+    let castOptions = {};
+
+    if (utils.isPOJO(cast)) {
+      if (cast[typeKey]) {
+        // support { type: Woot }
+        castOptions = clone(cast); // do not alter user arguments
+        delete castOptions[typeKey];
+        cast = cast[typeKey];
+      } else {
+        cast = Mixed;
+      }
+    }
+
+    if (options != null && options.ref != null && castOptions.ref == null) {
+      castOptions.ref = options.ref;
+    }
+
+    if (cast === Object) {
+      cast = Mixed;
+    }
+
+    // support { type: 'String' }
+    const name = typeof cast === 'string'
+      ? cast
+      : utils.getFunctionName(cast);
+
+    const Types = require('./index.js');
+    const caster = Types.hasOwnProperty(name) ? Types[name] : cast;
+
+    this.casterConstructor = caster;
+
+    if (this.casterConstructor instanceof SchemaArray) {
+      this.casterConstructor[isNestedArraySymbol] = true;
+    }
+
+    if (typeof caster === 'function' &&
+        !caster.$isArraySubdocument &&
+        !caster.$isSchemaMap) {
+      const path = this.caster instanceof EmbeddedDoc ? null : key;
+      this.caster = new caster(path, castOptions);
+    } else {
+      this.caster = caster;
+      if (!(this.caster instanceof EmbeddedDoc)) {
+        this.caster.path = key;
+      }
+    }
+
+    this.$embeddedSchemaType = this.caster;
+  }
+
+  this.$isMongooseArray = true;
+
+  SchemaType.call(this, key, options, 'Array');
+
+  let defaultArr;
+  let fn;
+
+  if (this.defaultValue != null) {
+    defaultArr = this.defaultValue;
+    fn = typeof defaultArr === 'function';
+  }
+
+  if (!('defaultValue' in this) || this.defaultValue !== void 0) {
+    const defaultFn = function() {
+      // Leave it up to `cast()` to convert the array
+      return fn
+        ? defaultArr.call(this)
+        : defaultArr != null
+          ? [].concat(defaultArr)
+          : [];
+    };
+    defaultFn.$runBeforeSetters = !fn;
+    this.default(defaultFn);
+  }
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaArray.schemaName = 'Array';
+
+
+/**
+ * Options for all arrays.
+ *
+ * - `castNonArrays`: `true` by default. If `false`, Mongoose will throw a CastError when a value isn't an array. If `true`, Mongoose will wrap the provided value in an array before casting.
+ *
+ * @static
+ * @api public
+ */
+
+SchemaArray.options = { castNonArrays: true };
+
+/*!
+ * ignore
+ */
+
+SchemaArray.defaultOptions = {};
+
+/**
+ * Sets a default option for all Array instances.
+ *
+ * #### Example:
+ *
+ *     // Make all Array instances have `required` of true by default.
+ *     mongoose.Schema.Array.set('required', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ test: Array }));
+ *     new User({ }).validateSync().errors.test.message; // Path `test` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @api public
+ */
+SchemaArray.set = SchemaType.set;
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaArray.prototype = Object.create(SchemaType.prototype);
+SchemaArray.prototype.constructor = SchemaArray;
+SchemaArray.prototype.OptionsConstructor = SchemaArrayOptions;
+
+/*!
+ * ignore
+ */
+
+SchemaArray._checkRequired = SchemaType.prototype.checkRequired;
+
+/**
+ * Override the function the required validator uses to check whether an array
+ * passes the `required` check.
+ *
+ * #### Example:
+ *
+ *     // Require non-empty array to pass `required` check
+ *     mongoose.Schema.Types.Array.checkRequired(v => Array.isArray(v) && v.length);
+ *
+ *     const M = mongoose.model({ arr: { type: Array, required: true } });
+ *     new M({ arr: [] }).validateSync(); // `null`, validation fails!
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @api public
+ */
+
+SchemaArray.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies the `required` validator.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaArray.prototype.checkRequired = function checkRequired(value, doc) {
+  if (typeof value === 'object' && SchemaType._isRef(this, value, doc, true)) {
+    return !!value;
+  }
+
+  // `require('util').inherits()` does **not** copy static properties, and
+  // plugins like mongoose-float use `inherits()` for pre-ES6.
+  const _checkRequired = typeof this.constructor.checkRequired === 'function' ?
+    this.constructor.checkRequired() :
+    SchemaArray.checkRequired();
+
+  return _checkRequired(value);
+};
+
+/**
+ * Adds an enum validator if this is an array of strings or numbers. Equivalent to
+ * `SchemaString.prototype.enum()` or `SchemaNumber.prototype.enum()`
+ *
+ * @param {...String|Object} [args] enumeration values
+ * @return {SchemaArray} this
+ */
+
+SchemaArray.prototype.enum = function() {
+  let arr = this;
+  while (true) {
+    const instance = arr &&
+    arr.caster &&
+    arr.caster.instance;
+    if (instance === 'Array') {
+      arr = arr.caster;
+      continue;
+    }
+    if (instance !== 'String' && instance !== 'Number') {
+      throw new Error('`enum` can only be set on an array of strings or numbers ' +
+        ', not ' + instance);
+    }
+    break;
+  }
+
+  let enumArray = arguments;
+  if (!Array.isArray(arguments) && utils.isObject(arguments)) {
+    enumArray = utils.object.vals(enumArray);
+  }
+
+  arr.caster.enum.apply(arr.caster, enumArray);
+  return this;
+};
+
+/**
+ * Overrides the getters application for the population special-case
+ *
+ * @param {Object} value
+ * @param {Object} scope
+ * @api private
+ */
+
+SchemaArray.prototype.applyGetters = function(value, scope) {
+  if (scope != null && scope.$__ != null && scope.$populated(this.path)) {
+    // means the object id was populated
+    return value;
+  }
+
+  const ret = SchemaType.prototype.applyGetters.call(this, value, scope);
+  if (Array.isArray(ret)) {
+    const rawValue = utils.isMongooseArray(ret) ? ret.__array : ret;
+    const len = rawValue.length;
+    for (let i = 0; i < len; ++i) {
+      rawValue[i] = this.caster.applyGetters(rawValue[i], scope);
+    }
+  }
+  return ret;
+};
+
+SchemaArray.prototype._applySetters = function(value, scope, init, priorVal) {
+  if (this.casterConstructor.$isMongooseArray &&
+      SchemaArray.options.castNonArrays &&
+      !this[isNestedArraySymbol]) {
+    // Check nesting levels and wrap in array if necessary
+    let depth = 0;
+    let arr = this;
+    while (arr != null &&
+      arr.$isMongooseArray &&
+      !arr.$isMongooseDocumentArray) {
+      ++depth;
+      arr = arr.casterConstructor;
+    }
+
+    // No need to wrap empty arrays
+    if (value != null && value.length !== 0) {
+      const valueDepth = arrayDepth(value);
+      if (valueDepth.min === valueDepth.max && valueDepth.max < depth && valueDepth.containsNonArrayItem) {
+        for (let i = valueDepth.max; i < depth; ++i) {
+          value = [value];
+        }
+      }
+    }
+  }
+
+  return SchemaType.prototype._applySetters.call(this, value, scope, init, priorVal);
+};
+
+/**
+ * Casts values for set().
+ *
+ * @param {Object} value
+ * @param {Document} doc document that triggers the casting
+ * @param {Boolean} init whether this is an initialization cast
+ * @api private
+ */
+
+SchemaArray.prototype.cast = function(value, doc, init, prev, options) {
+  // lazy load
+  MongooseArray || (MongooseArray = require('../types').Array);
+
+  let i;
+  let l;
+
+  if (Array.isArray(value)) {
+    const len = value.length;
+    if (!len && doc) {
+      const indexes = doc.schema.indexedPaths();
+
+      const arrayPath = this.path;
+      for (i = 0, l = indexes.length; i < l; ++i) {
+        const pathIndex = indexes[i][0][arrayPath];
+        if (pathIndex === '2dsphere' || pathIndex === '2d') {
+          return;
+        }
+      }
+
+      // Special case: if this index is on the parent of what looks like
+      // GeoJSON, skip setting the default to empty array re: #1668, #3233
+      const arrayGeojsonPath = this.path.endsWith('.coordinates') ?
+        this.path.substring(0, this.path.lastIndexOf('.')) : null;
+      if (arrayGeojsonPath != null) {
+        for (i = 0, l = indexes.length; i < l; ++i) {
+          const pathIndex = indexes[i][0][arrayGeojsonPath];
+          if (pathIndex === '2dsphere') {
+            return;
+          }
+        }
+      }
+    }
+
+    options = options || emptyOpts;
+
+    let rawValue = utils.isMongooseArray(value) ? value.__array : value;
+    value = MongooseArray(rawValue, options.path || this._arrayPath || this.path, doc, this);
+    rawValue = value.__array;
+
+    if (init && doc != null && doc.$__ != null && doc.$populated(this.path)) {
+      return value;
+    }
+
+    const caster = this.caster;
+    const isMongooseArray = caster.$isMongooseArray;
+    if (caster && this.casterConstructor !== Mixed) {
+      try {
+        const len = rawValue.length;
+        for (i = 0; i < len; i++) {
+          const opts = {};
+          // Perf: creating `arrayPath` is expensive for large arrays.
+          // We only need `arrayPath` if this is a nested array, so
+          // skip if possible.
+          if (isMongooseArray) {
+            if (options.arrayPath != null) {
+              opts.arrayPathIndex = i;
+            } else if (caster._arrayParentPath != null) {
+              opts.arrayPathIndex = i;
+            }
+          }
+          rawValue[i] = caster.applySetters(rawValue[i], doc, init, void 0, opts);
+        }
+      } catch (e) {
+        // rethrow
+        throw new CastError('[' + e.kind + ']', util.inspect(value), this.path + '.' + i, e, this);
+      }
+    }
+
+    return value;
+  }
+
+  const castNonArraysOption = this.options.castNonArrays != null ? this.options.castNonArrays : SchemaArray.options.castNonArrays;
+  if (init || castNonArraysOption) {
+    // gh-2442: if we're loading this from the db and its not an array, mark
+    // the whole array as modified.
+    if (!!doc && !!init) {
+      doc.markModified(this.path);
+    }
+    return this.cast([value], doc, init);
+  }
+
+  throw new CastError('Array', util.inspect(value), this.path, null, this);
+};
+
+/*!
+ * ignore
+ */
+
+SchemaArray.prototype._castForPopulate = function _castForPopulate(value, doc) {
+  // lazy load
+  MongooseArray || (MongooseArray = require('../types').Array);
+
+  if (Array.isArray(value)) {
+    let i;
+    const rawValue = value.__array ? value.__array : value;
+    const len = rawValue.length;
+
+    const caster = this.caster;
+    if (caster && this.casterConstructor !== Mixed) {
+      try {
+        for (i = 0; i < len; i++) {
+          const opts = {};
+          // Perf: creating `arrayPath` is expensive for large arrays.
+          // We only need `arrayPath` if this is a nested array, so
+          // skip if possible.
+          if (caster.$isMongooseArray && caster._arrayParentPath != null) {
+            opts.arrayPathIndex = i;
+          }
+
+          rawValue[i] = caster.cast(rawValue[i], doc, false, void 0, opts);
+        }
+      } catch (e) {
+        // rethrow
+        throw new CastError('[' + e.kind + ']', util.inspect(value), this.path + '.' + i, e, this);
+      }
+    }
+
+    return value;
+  }
+
+  throw new CastError('Array', util.inspect(value), this.path, null, this);
+};
+
+SchemaArray.prototype.$toObject = SchemaArray.prototype.toObject;
+
+/*!
+ * ignore
+ */
+
+SchemaArray.prototype.discriminator = function(name, schema) {
+  let arr = this;
+  while (arr.$isMongooseArray && !arr.$isMongooseDocumentArray) {
+    arr = arr.casterConstructor;
+    if (arr == null || typeof arr === 'function') {
+      throw new MongooseError('You can only add an embedded discriminator on ' +
+        'a document array, ' + this.path + ' is a plain array');
+    }
+  }
+  return arr.discriminator(name, schema);
+};
+
+/*!
+ * ignore
+ */
+
+SchemaArray.prototype.clone = function() {
+  const options = Object.assign({}, this.options);
+  const schematype = new this.constructor(this.path, this.caster, options, this.schemaOptions);
+  schematype.validators = this.validators.slice();
+  if (this.requiredValidator !== undefined) {
+    schematype.requiredValidator = this.requiredValidator;
+  }
+  return schematype;
+};
+
+SchemaArray.prototype._castForQuery = function(val, context) {
+  let Constructor = this.casterConstructor;
+
+  if (val &&
+      Constructor.discriminators &&
+      Constructor.schema &&
+      Constructor.schema.options &&
+      Constructor.schema.options.discriminatorKey) {
+    if (typeof val[Constructor.schema.options.discriminatorKey] === 'string' &&
+        Constructor.discriminators[val[Constructor.schema.options.discriminatorKey]]) {
+      Constructor = Constructor.discriminators[val[Constructor.schema.options.discriminatorKey]];
+    } else {
+      const constructorByValue = getDiscriminatorByValue(Constructor.discriminators, val[Constructor.schema.options.discriminatorKey]);
+      if (constructorByValue) {
+        Constructor = constructorByValue;
+      }
+    }
+  }
+
+  const proto = this.casterConstructor.prototype;
+  const protoCastForQuery = proto && proto.castForQuery;
+  const protoCast = proto && proto.cast;
+  const constructorCastForQuery = Constructor.castForQuery;
+  const caster = this.caster;
+
+  if (Array.isArray(val)) {
+    this.setters.reverse().forEach(setter => {
+      val = setter.call(this, val, this);
+    });
+    val = val.map(function(v) {
+      if (utils.isObject(v) && v.$elemMatch) {
+        return v;
+      }
+      if (protoCastForQuery) {
+        v = protoCastForQuery.call(caster, null, v, context);
+        return v;
+      } else if (protoCast) {
+        v = protoCast.call(caster, v);
+        return v;
+      } else if (constructorCastForQuery) {
+        v = constructorCastForQuery.call(caster, null, v, context);
+        return v;
+      }
+      if (v != null) {
+        v = new Constructor(v);
+        return v;
+      }
+      return v;
+    });
+  } else if (protoCastForQuery) {
+    val = protoCastForQuery.call(caster, null, val, context);
+  } else if (protoCast) {
+    val = protoCast.call(caster, val);
+  } else if (constructorCastForQuery) {
+    val = constructorCastForQuery.call(caster, null, val, context);
+  } else if (val != null) {
+    val = new Constructor(val);
+  }
+
+  return val;
+};
+
+/**
+ * Casts values for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} [value]
+ * @api private
+ */
+
+SchemaArray.prototype.castForQuery = function($conditional, val, context) {
+  let handler;
+
+  if ($conditional != null) {
+    handler = this.$conditionalHandlers[$conditional];
+
+    if (!handler) {
+      throw new Error('Can\'t use ' + $conditional + ' with Array.');
+    }
+
+    return handler.call(this, val, context);
+  } else {
+    return this._castForQuery(val, context);
+  }
+};
+
+function cast$all(val, context) {
+  if (!Array.isArray(val)) {
+    val = [val];
+  }
+
+  val = val.map((v) => {
+    if (!utils.isObject(v)) {
+      return v;
+    }
+    if (v.$elemMatch != null) {
+      return { $elemMatch: cast(this.casterConstructor.schema, v.$elemMatch, null, this && this.$$context) };
+    }
+
+    const o = {};
+    o[this.path] = v;
+    return cast(this.casterConstructor.schema, o, null, this && this.$$context)[this.path];
+  }, this);
+
+  return this.castForQuery(null, val, context);
+}
+
+function cast$elemMatch(val, context) {
+  const keys = Object.keys(val);
+  const numKeys = keys.length;
+  for (let i = 0; i < numKeys; ++i) {
+    const key = keys[i];
+    const value = val[key];
+    if (isOperator(key) && value != null) {
+      val[key] = this.castForQuery(key, value, context);
+    }
+  }
+
+  // Is this an embedded discriminator and is the discriminator key set?
+  // If so, use the discriminator schema. See gh-7449
+  const discriminatorKey = this &&
+    this.casterConstructor &&
+    this.casterConstructor.schema &&
+    this.casterConstructor.schema.options &&
+    this.casterConstructor.schema.options.discriminatorKey;
+  const discriminators = this &&
+  this.casterConstructor &&
+  this.casterConstructor.schema &&
+  this.casterConstructor.schema.discriminators || {};
+  if (discriminatorKey != null &&
+      val[discriminatorKey] != null &&
+      discriminators[val[discriminatorKey]] != null) {
+    return cast(discriminators[val[discriminatorKey]], val, null, this && this.$$context);
+  }
+
+  return cast(this.casterConstructor.schema, val, null, this && this.$$context);
+}
+
+const handle = SchemaArray.prototype.$conditionalHandlers = {};
+
+handle.$all = cast$all;
+handle.$options = String;
+handle.$elemMatch = cast$elemMatch;
+handle.$geoIntersects = geospatial.cast$geoIntersects;
+handle.$or = createLogicalQueryOperatorHandler('$or');
+handle.$and = createLogicalQueryOperatorHandler('$and');
+handle.$nor = createLogicalQueryOperatorHandler('$nor');
+
+function createLogicalQueryOperatorHandler(op) {
+  return function logicalQueryOperatorHandler(val) {
+    if (!Array.isArray(val)) {
+      throw new TypeError('conditional ' + op + ' requires an array');
+    }
+
+    const ret = [];
+    for (const obj of val) {
+      ret.push(cast(this.casterConstructor.schema, obj, null, this && this.$$context));
+    }
+
+    return ret;
+  };
+}
+
+handle.$near =
+handle.$nearSphere = geospatial.cast$near;
+
+handle.$within =
+handle.$geoWithin = geospatial.cast$within;
+
+handle.$size =
+handle.$minDistance =
+handle.$maxDistance = castToNumber;
+
+handle.$exists = $exists;
+handle.$type = $type;
+
+handle.$eq =
+handle.$gt =
+handle.$gte =
+handle.$lt =
+handle.$lte =
+handle.$not =
+handle.$regex =
+handle.$ne = SchemaArray.prototype._castForQuery;
+
+// `$in` is special because you can also include an empty array in the query
+// like `$in: [1, []]`, see gh-5913
+handle.$nin = SchemaType.prototype.$conditionalHandlers.$nin;
+handle.$in = SchemaType.prototype.$conditionalHandlers.$in;
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaArray;

node_modules/mongoose/lib/schema/boolean.js

@@ -0,0 +1,267 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+const CastError = require('../error/cast');
+const SchemaType = require('../schematype');
+const castBoolean = require('../cast/boolean');
+const utils = require('../utils');
+
+/**
+ * Boolean SchemaType constructor.
+ *
+ * @param {String} path
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaBoolean(path, options) {
+  SchemaType.call(this, path, options, 'Boolean');
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaBoolean.schemaName = 'Boolean';
+
+SchemaBoolean.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaBoolean.prototype = Object.create(SchemaType.prototype);
+SchemaBoolean.prototype.constructor = SchemaBoolean;
+
+/*!
+ * ignore
+ */
+
+SchemaBoolean._cast = castBoolean;
+
+/**
+ * Sets a default option for all Boolean instances.
+ *
+ * #### Example:
+ *
+ *     // Make all booleans have `default` of false.
+ *     mongoose.Schema.Boolean.set('default', false);
+ *
+ *     const Order = mongoose.model('Order', new Schema({ isPaid: Boolean }));
+ *     new Order({ }).isPaid; // false
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SchemaBoolean.set = SchemaType.set;
+
+/**
+ * Get/set the function used to cast arbitrary values to booleans.
+ *
+ * #### Example:
+ *
+ *     // Make Mongoose cast empty string '' to false.
+ *     const original = mongoose.Schema.Boolean.cast();
+ *     mongoose.Schema.Boolean.cast(v => {
+ *       if (v === '') {
+ *         return false;
+ *       }
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.Schema.Boolean.cast(false);
+ *
+ * @param {Function} caster
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaBoolean.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaBoolean._defaultCaster = v => {
+  if (v != null && typeof v !== 'boolean') {
+    throw new Error();
+  }
+  return v;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaBoolean._checkRequired = v => v === true || v === false;
+
+/**
+ * Override the function the required validator uses to check whether a boolean
+ * passes the `required` check.
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+SchemaBoolean.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator. For a boolean
+ * to satisfy a required validator, it must be strictly equal to true or to
+ * false.
+ *
+ * @param {Any} value
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaBoolean.prototype.checkRequired = function(value) {
+  return this.constructor._checkRequired(value);
+};
+
+/**
+ * Configure which values get casted to `true`.
+ *
+ * #### Example:
+ *
+ *     const M = mongoose.model('Test', new Schema({ b: Boolean }));
+ *     new M({ b: 'affirmative' }).b; // undefined
+ *     mongoose.Schema.Boolean.convertToTrue.add('affirmative');
+ *     new M({ b: 'affirmative' }).b; // true
+ *
+ * @property convertToTrue
+ * @type {Set}
+ * @api public
+ */
+
+Object.defineProperty(SchemaBoolean, 'convertToTrue', {
+  get: () => castBoolean.convertToTrue,
+  set: v => { castBoolean.convertToTrue = v; }
+});
+
+/**
+ * Configure which values get casted to `false`.
+ *
+ * #### Example:
+ *
+ *     const M = mongoose.model('Test', new Schema({ b: Boolean }));
+ *     new M({ b: 'nay' }).b; // undefined
+ *     mongoose.Schema.Types.Boolean.convertToFalse.add('nay');
+ *     new M({ b: 'nay' }).b; // false
+ *
+ * @property convertToFalse
+ * @type {Set}
+ * @api public
+ */
+
+Object.defineProperty(SchemaBoolean, 'convertToFalse', {
+  get: () => castBoolean.convertToFalse,
+  set: v => { castBoolean.convertToFalse = v; }
+});
+
+/**
+ * Casts to boolean
+ *
+ * @param {Object} value
+ * @param {Object} model this value is optional
+ * @api private
+ */
+
+SchemaBoolean.prototype.cast = function(value) {
+  let castBoolean;
+  if (typeof this._castFunction === 'function') {
+    castBoolean = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castBoolean = this.constructor.cast();
+  } else {
+    castBoolean = SchemaBoolean.cast();
+  }
+
+  try {
+    return castBoolean(value);
+  } catch (error) {
+    throw new CastError('Boolean', value, this.path, error, this);
+  }
+};
+
+SchemaBoolean.$conditionalHandlers =
+    utils.options(SchemaType.prototype.$conditionalHandlers, {});
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} val
+ * @api private
+ */
+
+SchemaBoolean.prototype.castForQuery = function($conditional, val, context) {
+  let handler;
+  if ($conditional != null) {
+    handler = SchemaBoolean.$conditionalHandlers[$conditional];
+
+    if (handler) {
+      return handler.call(this, val);
+    }
+
+    return this.applySetters(null, val, context);
+  }
+
+  return this.applySetters(val, context);
+};
+
+/**
+ *
+ * @api private
+ */
+
+SchemaBoolean.prototype._castNullish = function _castNullish(v) {
+  if (typeof v === 'undefined') {
+    return v;
+  }
+  const castBoolean = typeof this.constructor.cast === 'function' ?
+    this.constructor.cast() :
+    SchemaBoolean.cast();
+  if (castBoolean == null) {
+    return v;
+  }
+  if (castBoolean.convertToFalse instanceof Set && castBoolean.convertToFalse.has(v)) {
+    return false;
+  }
+  if (castBoolean.convertToTrue instanceof Set && castBoolean.convertToTrue.has(v)) {
+    return true;
+  }
+  return v;
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaBoolean;

node_modules/mongoose/lib/schema/buffer.js

@@ -0,0 +1,268 @@
+/*!
+ * Module dependencies.
+ */
+
+'use strict';
+
+const MongooseBuffer = require('../types/buffer');
+const SchemaBufferOptions = require('../options/SchemaBufferOptions');
+const SchemaType = require('../schematype');
+const handleBitwiseOperator = require('./operators/bitwise');
+const utils = require('../utils');
+
+const Binary = MongooseBuffer.Binary;
+const CastError = SchemaType.CastError;
+
+/**
+ * Buffer SchemaType constructor
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaBuffer(key, options) {
+  SchemaType.call(this, key, options, 'Buffer');
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaBuffer.schemaName = 'Buffer';
+
+SchemaBuffer.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaBuffer.prototype = Object.create(SchemaType.prototype);
+SchemaBuffer.prototype.constructor = SchemaBuffer;
+SchemaBuffer.prototype.OptionsConstructor = SchemaBufferOptions;
+
+/*!
+ * ignore
+ */
+
+SchemaBuffer._checkRequired = v => !!(v && v.length);
+
+/**
+ * Sets a default option for all Buffer instances.
+ *
+ * #### Example:
+ *
+ *     // Make all buffers have `required` of true by default.
+ *     mongoose.Schema.Buffer.set('required', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ test: Buffer }));
+ *     new User({ }).validateSync().errors.test.message; // Path `test` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SchemaBuffer.set = SchemaType.set;
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * #### Example:
+ *
+ *     // Allow empty strings to pass `required` check
+ *     mongoose.Schema.Types.String.checkRequired(v => v != null);
+ *
+ *     const M = mongoose.model({ buf: { type: Buffer, required: true } });
+ *     new M({ buf: Buffer.from('') }).validateSync(); // validation passes!
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+SchemaBuffer.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator. To satisfy a
+ * required validator, a buffer must not be null or undefined and have
+ * non-zero length.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaBuffer.prototype.checkRequired = function(value, doc) {
+  if (SchemaType._isRef(this, value, doc, true)) {
+    return !!value;
+  }
+  return this.constructor._checkRequired(value);
+};
+
+/**
+ * Casts contents
+ *
+ * @param {Object} value
+ * @param {Document} doc document that triggers the casting
+ * @param {Boolean} init
+ * @api private
+ */
+
+SchemaBuffer.prototype.cast = function(value, doc, init) {
+  let ret;
+  if (SchemaType._isRef(this, value, doc, init)) {
+    if (value && value.isMongooseBuffer) {
+      return value;
+    }
+
+    if (Buffer.isBuffer(value)) {
+      if (!value || !value.isMongooseBuffer) {
+        value = new MongooseBuffer(value, [this.path, doc]);
+        if (this.options.subtype != null) {
+          value._subtype = this.options.subtype;
+        }
+      }
+      return value;
+    }
+
+    if (value instanceof Binary) {
+      ret = new MongooseBuffer(value.value(true), [this.path, doc]);
+      if (typeof value.sub_type !== 'number') {
+        throw new CastError('Buffer', value, this.path, null, this);
+      }
+      ret._subtype = value.sub_type;
+      return ret;
+    }
+
+    if (value == null || utils.isNonBuiltinObject(value)) {
+      return this._castRef(value, doc, init);
+    }
+  }
+
+  // documents
+  if (value && value._id) {
+    value = value._id;
+  }
+
+  if (value && value.isMongooseBuffer) {
+    return value;
+  }
+
+  if (Buffer.isBuffer(value)) {
+    if (!value || !value.isMongooseBuffer) {
+      value = new MongooseBuffer(value, [this.path, doc]);
+      if (this.options.subtype != null) {
+        value._subtype = this.options.subtype;
+      }
+    }
+    return value;
+  }
+
+  if (value instanceof Binary) {
+    ret = new MongooseBuffer(value.value(true), [this.path, doc]);
+    if (typeof value.sub_type !== 'number') {
+      throw new CastError('Buffer', value, this.path, null, this);
+    }
+    ret._subtype = value.sub_type;
+    return ret;
+  }
+
+  if (value === null) {
+    return value;
+  }
+
+
+  const type = typeof value;
+  if (
+    type === 'string' || type === 'number' || Array.isArray(value) ||
+    (type === 'object' && value.type === 'Buffer' && Array.isArray(value.data)) // gh-6863
+  ) {
+    if (type === 'number') {
+      value = [value];
+    }
+    ret = new MongooseBuffer(value, [this.path, doc]);
+    if (this.options.subtype != null) {
+      ret._subtype = this.options.subtype;
+    }
+    return ret;
+  }
+
+  throw new CastError('Buffer', value, this.path, null, this);
+};
+
+/**
+ * Sets the default [subtype](https://studio3t.com/whats-new/best-practices-uuid-mongodb/)
+ * for this buffer. You can find a [list of allowed subtypes here](https://api.mongodb.com/python/current/api/bson/binary.html).
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ uuid: { type: Buffer, subtype: 4 });
+ *     const M = db.model('M', s);
+ *     const m = new M({ uuid: 'test string' });
+ *     m.uuid._subtype; // 4
+ *
+ * @param {Number} subtype the default subtype
+ * @return {SchemaType} this
+ * @api public
+ */
+
+SchemaBuffer.prototype.subtype = function(subtype) {
+  this.options.subtype = subtype;
+  return this;
+};
+
+/*!
+ * ignore
+ */
+function handleSingle(val, context) {
+  return this.castForQuery(null, val, context);
+}
+
+SchemaBuffer.prototype.$conditionalHandlers =
+    utils.options(SchemaType.prototype.$conditionalHandlers, {
+      $bitsAllClear: handleBitwiseOperator,
+      $bitsAnyClear: handleBitwiseOperator,
+      $bitsAllSet: handleBitwiseOperator,
+      $bitsAnySet: handleBitwiseOperator,
+      $gt: handleSingle,
+      $gte: handleSingle,
+      $lt: handleSingle,
+      $lte: handleSingle
+    });
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} [value]
+ * @api private
+ */
+
+SchemaBuffer.prototype.castForQuery = function($conditional, val, context) {
+  let handler;
+  if ($conditional != null) {
+    handler = this.$conditionalHandlers[$conditional];
+    if (!handler) {
+      throw new Error('Can\'t use ' + $conditional + ' with Buffer.');
+    }
+    return handler.call(this, val);
+  }
+  const casted = this.applySetters(val, context);
+  return casted ? casted.toObject({ transform: false, virtuals: false }) : casted;
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaBuffer;

node_modules/mongoose/lib/schema/date.js

@@ -0,0 +1,404 @@
+/*!
+ * Module requirements.
+ */
+
+'use strict';
+
+const MongooseError = require('../error/index');
+const SchemaDateOptions = require('../options/SchemaDateOptions');
+const SchemaType = require('../schematype');
+const castDate = require('../cast/date');
+const getConstructorName = require('../helpers/getConstructorName');
+const utils = require('../utils');
+
+const CastError = SchemaType.CastError;
+
+/**
+ * Date SchemaType constructor.
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaDate(key, options) {
+  SchemaType.call(this, key, options, 'Date');
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaDate.schemaName = 'Date';
+
+SchemaDate.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaDate.prototype = Object.create(SchemaType.prototype);
+SchemaDate.prototype.constructor = SchemaDate;
+SchemaDate.prototype.OptionsConstructor = SchemaDateOptions;
+
+/*!
+ * ignore
+ */
+
+SchemaDate._cast = castDate;
+
+/**
+ * Sets a default option for all Date instances.
+ *
+ * #### Example:
+ *
+ *     // Make all dates have `required` of true by default.
+ *     mongoose.Schema.Date.set('required', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ test: Date }));
+ *     new User({ }).validateSync().errors.test.message; // Path `test` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SchemaDate.set = SchemaType.set;
+
+/**
+ * Get/set the function used to cast arbitrary values to dates.
+ *
+ * #### Example:
+ *
+ *     // Mongoose converts empty string '' into `null` for date types. You
+ *     // can create a custom caster to disable it.
+ *     const original = mongoose.Schema.Types.Date.cast();
+ *     mongoose.Schema.Types.Date.cast(v => {
+ *       assert.ok(v !== '');
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.Schema.Types.Date.cast(false);
+ *
+ * @param {Function} caster
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaDate.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaDate._defaultCaster = v => {
+  if (v != null && !(v instanceof Date)) {
+    throw new Error();
+  }
+  return v;
+};
+
+/**
+ * Declares a TTL index (rounded to the nearest second) for _Date_ types only.
+ *
+ * This sets the `expireAfterSeconds` index option available in MongoDB >= 2.1.2.
+ * This index type is only compatible with Date types.
+ *
+ * #### Example:
+ *
+ *     // expire in 24 hours
+ *     new Schema({ createdAt: { type: Date, expires: 60*60*24 }});
+ *
+ * `expires` utilizes the `ms` module from [guille](https://github.com/guille/) allowing us to use a friendlier syntax:
+ *
+ * #### Example:
+ *
+ *     // expire in 24 hours
+ *     new Schema({ createdAt: { type: Date, expires: '24h' }});
+ *
+ *     // expire in 1.5 hours
+ *     new Schema({ createdAt: { type: Date, expires: '1.5h' }});
+ *
+ *     // expire in 7 days
+ *     const schema = new Schema({ createdAt: Date });
+ *     schema.path('createdAt').expires('7d');
+ *
+ * @param {Number|String} when
+ * @added 3.0.0
+ * @return {SchemaType} this
+ * @api public
+ */
+
+SchemaDate.prototype.expires = function(when) {
+  if (getConstructorName(this._index) !== 'Object') {
+    this._index = {};
+  }
+
+  this._index.expires = when;
+  utils.expires(this._index);
+  return this;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaDate._checkRequired = v => v instanceof Date;
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * #### Example:
+ *
+ *     // Allow empty strings to pass `required` check
+ *     mongoose.Schema.Types.String.checkRequired(v => v != null);
+ *
+ *     const M = mongoose.model({ str: { type: String, required: true } });
+ *     new M({ str: '' }).validateSync(); // `null`, validation passes!
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+SchemaDate.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator. To satisfy
+ * a required validator, the given value must be an instance of `Date`.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaDate.prototype.checkRequired = function(value, doc) {
+  if (typeof value === 'object' && SchemaType._isRef(this, value, doc, true)) {
+    return value != null;
+  }
+
+  // `require('util').inherits()` does **not** copy static properties, and
+  // plugins like mongoose-float use `inherits()` for pre-ES6.
+  const _checkRequired = typeof this.constructor.checkRequired === 'function' ?
+    this.constructor.checkRequired() :
+    SchemaDate.checkRequired();
+  return _checkRequired(value);
+};
+
+/**
+ * Sets a minimum date validator.
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ d: { type: Date, min: Date('1970-01-01') })
+ *     const M = db.model('M', s)
+ *     const m = new M({ d: Date('1969-12-31') })
+ *     m.save(function (err) {
+ *       console.error(err) // validator error
+ *       m.d = Date('2014-12-08');
+ *       m.save() // success
+ *     })
+ *
+ *     // custom error messages
+ *     // We can also use the special {MIN} token which will be replaced with the invalid value
+ *     const min = [Date('1970-01-01'), 'The value of path `{PATH}` ({VALUE}) is beneath the limit ({MIN}).'];
+ *     const schema = new Schema({ d: { type: Date, min: min })
+ *     const M = mongoose.model('M', schema);
+ *     const s= new M({ d: Date('1969-12-31') });
+ *     s.validate(function (err) {
+ *       console.log(String(err)) // ValidationError: The value of path `d` (1969-12-31) is before the limit (1970-01-01).
+ *     })
+ *
+ * @param {Date} value minimum date
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaDate.prototype.min = function(value, message) {
+  if (this.minValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.minValidator;
+    }, this);
+  }
+
+  if (value) {
+    let msg = message || MongooseError.messages.Date.min;
+    if (typeof msg === 'string') {
+      msg = msg.replace(/{MIN}/, (value === Date.now ? 'Date.now()' : value.toString()));
+    }
+    const _this = this;
+    this.validators.push({
+      validator: this.minValidator = function(val) {
+        let _value = value;
+        if (typeof value === 'function' && value !== Date.now) {
+          _value = _value.call(this);
+        }
+        const min = (_value === Date.now ? _value() : _this.cast(_value));
+        return val === null || val.valueOf() >= min.valueOf();
+      },
+      message: msg,
+      type: 'min',
+      min: value
+    });
+  }
+
+  return this;
+};
+
+/**
+ * Sets a maximum date validator.
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ d: { type: Date, max: Date('2014-01-01') })
+ *     const M = db.model('M', s)
+ *     const m = new M({ d: Date('2014-12-08') })
+ *     m.save(function (err) {
+ *       console.error(err) // validator error
+ *       m.d = Date('2013-12-31');
+ *       m.save() // success
+ *     })
+ *
+ *     // custom error messages
+ *     // We can also use the special {MAX} token which will be replaced with the invalid value
+ *     const max = [Date('2014-01-01'), 'The value of path `{PATH}` ({VALUE}) exceeds the limit ({MAX}).'];
+ *     const schema = new Schema({ d: { type: Date, max: max })
+ *     const M = mongoose.model('M', schema);
+ *     const s= new M({ d: Date('2014-12-08') });
+ *     s.validate(function (err) {
+ *       console.log(String(err)) // ValidationError: The value of path `d` (2014-12-08) exceeds the limit (2014-01-01).
+ *     })
+ *
+ * @param {Date} maximum date
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaDate.prototype.max = function(value, message) {
+  if (this.maxValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.maxValidator;
+    }, this);
+  }
+
+  if (value) {
+    let msg = message || MongooseError.messages.Date.max;
+    if (typeof msg === 'string') {
+      msg = msg.replace(/{MAX}/, (value === Date.now ? 'Date.now()' : value.toString()));
+    }
+    const _this = this;
+    this.validators.push({
+      validator: this.maxValidator = function(val) {
+        let _value = value;
+        if (typeof _value === 'function' && _value !== Date.now) {
+          _value = _value.call(this);
+        }
+        const max = (_value === Date.now ? _value() : _this.cast(_value));
+        return val === null || val.valueOf() <= max.valueOf();
+      },
+      message: msg,
+      type: 'max',
+      max: value
+    });
+  }
+
+  return this;
+};
+
+/**
+ * Casts to date
+ *
+ * @param {Object} value to cast
+ * @api private
+ */
+
+SchemaDate.prototype.cast = function(value) {
+  let castDate;
+  if (typeof this._castFunction === 'function') {
+    castDate = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castDate = this.constructor.cast();
+  } else {
+    castDate = SchemaDate.cast();
+  }
+
+  try {
+    return castDate(value);
+  } catch (error) {
+    throw new CastError('date', value, this.path, error, this);
+  }
+};
+
+/**
+ * Date Query casting.
+ *
+ * @param {Any} val
+ * @api private
+ */
+
+function handleSingle(val) {
+  return this.cast(val);
+}
+
+SchemaDate.prototype.$conditionalHandlers =
+    utils.options(SchemaType.prototype.$conditionalHandlers, {
+      $gt: handleSingle,
+      $gte: handleSingle,
+      $lt: handleSingle,
+      $lte: handleSingle
+    });
+
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} [value]
+ * @api private
+ */
+
+SchemaDate.prototype.castForQuery = function($conditional, val, context) {
+  if ($conditional == null) {
+    return this.applySetters(val, context);
+  }
+
+  const handler = this.$conditionalHandlers[$conditional];
+
+  if (!handler) {
+    throw new Error('Can\'t use ' + $conditional + ' with Date.');
+  }
+
+  return handler.call(this, val);
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaDate;

node_modules/mongoose/lib/schema/decimal128.js

@@ -0,0 +1,210 @@
+/*!
+ * Module dependencies.
+ */
+
+'use strict';
+
+const SchemaType = require('../schematype');
+const CastError = SchemaType.CastError;
+const castDecimal128 = require('../cast/decimal128');
+const utils = require('../utils');
+const isBsonType = require('../helpers/isBsonType');
+
+/**
+ * Decimal128 SchemaType constructor.
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function Decimal128(key, options) {
+  SchemaType.call(this, key, options, 'Decimal128');
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+Decimal128.schemaName = 'Decimal128';
+
+Decimal128.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+Decimal128.prototype = Object.create(SchemaType.prototype);
+Decimal128.prototype.constructor = Decimal128;
+
+/*!
+ * ignore
+ */
+
+Decimal128._cast = castDecimal128;
+
+/**
+ * Sets a default option for all Decimal128 instances.
+ *
+ * #### Example:
+ *
+ *     // Make all decimal 128s have `required` of true by default.
+ *     mongoose.Schema.Decimal128.set('required', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ test: mongoose.Decimal128 }));
+ *     new User({ }).validateSync().errors.test.message; // Path `test` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+Decimal128.set = SchemaType.set;
+
+/**
+ * Get/set the function used to cast arbitrary values to decimals.
+ *
+ * #### Example:
+ *
+ *     // Make Mongoose only refuse to cast numbers as decimal128
+ *     const original = mongoose.Schema.Types.Decimal128.cast();
+ *     mongoose.Decimal128.cast(v => {
+ *       assert.ok(typeof v !== 'number');
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.Decimal128.cast(false);
+ *
+ * @param {Function} [caster]
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+Decimal128.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+Decimal128._defaultCaster = v => {
+  if (v != null && !isBsonType(v, 'Decimal128')) {
+    throw new Error();
+  }
+  return v;
+};
+
+/*!
+ * ignore
+ */
+
+Decimal128._checkRequired = v => isBsonType(v, 'Decimal128');
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+Decimal128.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+Decimal128.prototype.checkRequired = function checkRequired(value, doc) {
+  if (SchemaType._isRef(this, value, doc, true)) {
+    return !!value;
+  }
+
+  // `require('util').inherits()` does **not** copy static properties, and
+  // plugins like mongoose-float use `inherits()` for pre-ES6.
+  const _checkRequired = typeof this.constructor.checkRequired === 'function' ?
+    this.constructor.checkRequired() :
+    Decimal128.checkRequired();
+
+  return _checkRequired(value);
+};
+
+/**
+ * Casts to Decimal128
+ *
+ * @param {Object} value
+ * @param {Object} doc
+ * @param {Boolean} init whether this is an initialization cast
+ * @api private
+ */
+
+Decimal128.prototype.cast = function(value, doc, init) {
+  if (SchemaType._isRef(this, value, doc, init)) {
+    if (isBsonType(value, 'Decimal128')) {
+      return value;
+    }
+
+    return this._castRef(value, doc, init);
+  }
+
+  let castDecimal128;
+  if (typeof this._castFunction === 'function') {
+    castDecimal128 = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castDecimal128 = this.constructor.cast();
+  } else {
+    castDecimal128 = Decimal128.cast();
+  }
+
+  try {
+    return castDecimal128(value);
+  } catch (error) {
+    throw new CastError('Decimal128', value, this.path, error, this);
+  }
+};
+
+/*!
+ * ignore
+ */
+
+function handleSingle(val) {
+  return this.cast(val);
+}
+
+Decimal128.prototype.$conditionalHandlers =
+    utils.options(SchemaType.prototype.$conditionalHandlers, {
+      $gt: handleSingle,
+      $gte: handleSingle,
+      $lt: handleSingle,
+      $lte: handleSingle
+    });
+
+/*!
+ * Module exports.
+ */
+
+module.exports = Decimal128;

node_modules/mongoose/lib/schema/documentarray.js

@@ -0,0 +1,619 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+const ArrayType = require('./array');
+const CastError = require('../error/cast');
+const EventEmitter = require('events').EventEmitter;
+const SchemaDocumentArrayOptions =
+  require('../options/SchemaDocumentArrayOptions');
+const SchemaType = require('../schematype');
+const SubdocumentPath = require('./SubdocumentPath');
+const discriminator = require('../helpers/model/discriminator');
+const handleIdOption = require('../helpers/schema/handleIdOption');
+const handleSpreadDoc = require('../helpers/document/handleSpreadDoc');
+const utils = require('../utils');
+const getConstructor = require('../helpers/discriminator/getConstructor');
+
+const arrayAtomicsSymbol = require('../helpers/symbols').arrayAtomicsSymbol;
+const arrayPathSymbol = require('../helpers/symbols').arrayPathSymbol;
+const documentArrayParent = require('../helpers/symbols').documentArrayParent;
+
+let MongooseDocumentArray;
+let Subdocument;
+
+/**
+ * SubdocsArray SchemaType constructor
+ *
+ * @param {String} key
+ * @param {Schema} schema
+ * @param {Object} options
+ * @param {Object} schemaOptions
+ * @inherits SchemaArray
+ * @api public
+ */
+
+function DocumentArrayPath(key, schema, options, schemaOptions) {
+  const schemaTypeIdOption = DocumentArrayPath.defaultOptions &&
+    DocumentArrayPath.defaultOptions._id;
+  if (schemaTypeIdOption != null) {
+    schemaOptions = schemaOptions || {};
+    schemaOptions._id = schemaTypeIdOption;
+  }
+
+  if (schemaOptions != null && schemaOptions._id != null) {
+    schema = handleIdOption(schema, schemaOptions);
+  } else if (options != null && options._id != null) {
+    schema = handleIdOption(schema, options);
+  }
+
+  const EmbeddedDocument = _createConstructor(schema, options);
+  EmbeddedDocument.prototype.$basePath = key;
+
+  ArrayType.call(this, key, EmbeddedDocument, options);
+
+  this.schema = schema;
+  this.schemaOptions = schemaOptions || {};
+  this.$isMongooseDocumentArray = true;
+  this.Constructor = EmbeddedDocument;
+
+  EmbeddedDocument.base = schema.base;
+
+  const fn = this.defaultValue;
+
+  if (!('defaultValue' in this) || fn !== void 0) {
+    this.default(function() {
+      let arr = fn.call(this);
+      if (arr != null && !Array.isArray(arr)) {
+        arr = [arr];
+      }
+      // Leave it up to `cast()` to convert this to a documentarray
+      return arr;
+    });
+  }
+
+  const parentSchemaType = this;
+  this.$embeddedSchemaType = new SchemaType(key + '.$', {
+    required: this &&
+      this.schemaOptions &&
+      this.schemaOptions.required || false
+  });
+  this.$embeddedSchemaType.cast = function(value, doc, init) {
+    return parentSchemaType.cast(value, doc, init)[0];
+  };
+  this.$embeddedSchemaType.doValidate = function(value, fn, scope, options) {
+    const Constructor = getConstructor(this.caster, value);
+
+    if (value && !(value instanceof Constructor)) {
+      value = new Constructor(value, scope, null, null, options && options.index != null ? options.index : null);
+    }
+
+    return SubdocumentPath.prototype.doValidate.call(this, value, fn, scope, options);
+  };
+  this.$embeddedSchemaType.$isMongooseDocumentArrayElement = true;
+  this.$embeddedSchemaType.caster = this.Constructor;
+  this.$embeddedSchemaType.schema = this.schema;
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+DocumentArrayPath.schemaName = 'DocumentArray';
+
+/**
+ * Options for all document arrays.
+ *
+ * - `castNonArrays`: `true` by default. If `false`, Mongoose will throw a CastError when a value isn't an array. If `true`, Mongoose will wrap the provided value in an array before casting.
+ *
+ * @api public
+ */
+
+DocumentArrayPath.options = { castNonArrays: true };
+
+/*!
+ * Inherits from ArrayType.
+ */
+DocumentArrayPath.prototype = Object.create(ArrayType.prototype);
+DocumentArrayPath.prototype.constructor = DocumentArrayPath;
+DocumentArrayPath.prototype.OptionsConstructor = SchemaDocumentArrayOptions;
+
+/*!
+ * ignore
+ */
+
+function _createConstructor(schema, options, baseClass) {
+  Subdocument || (Subdocument = require('../types/ArraySubdocument'));
+
+  // compile an embedded document for this schema
+  function EmbeddedDocument() {
+    Subdocument.apply(this, arguments);
+    if (this.__parentArray == null || this.__parentArray.getArrayParent() == null) {
+      return;
+    }
+    this.$session(this.__parentArray.getArrayParent().$session());
+  }
+
+  schema._preCompile();
+
+  const proto = baseClass != null ? baseClass.prototype : Subdocument.prototype;
+  EmbeddedDocument.prototype = Object.create(proto);
+  EmbeddedDocument.prototype.$__setSchema(schema);
+  EmbeddedDocument.schema = schema;
+  EmbeddedDocument.prototype.constructor = EmbeddedDocument;
+  EmbeddedDocument.$isArraySubdocument = true;
+  EmbeddedDocument.events = new EventEmitter();
+  EmbeddedDocument.base = schema.base;
+
+  // apply methods
+  for (const i in schema.methods) {
+    EmbeddedDocument.prototype[i] = schema.methods[i];
+  }
+
+  // apply statics
+  for (const i in schema.statics) {
+    EmbeddedDocument[i] = schema.statics[i];
+  }
+
+  for (const i in EventEmitter.prototype) {
+    EmbeddedDocument[i] = EventEmitter.prototype[i];
+  }
+
+  EmbeddedDocument.options = options;
+
+  return EmbeddedDocument;
+}
+
+/**
+ * Adds a discriminator to this document array.
+ *
+ * #### Example:
+ *
+ *     const shapeSchema = Schema({ name: String }, { discriminatorKey: 'kind' });
+ *     const schema = Schema({ shapes: [shapeSchema] });
+ *
+ *     const docArrayPath = parentSchema.path('shapes');
+ *     docArrayPath.discriminator('Circle', Schema({ radius: Number }));
+ *
+ * @param {String} name
+ * @param {Schema} schema fields to add to the schema for instances of this sub-class
+ * @param {Object|string} [options] If string, same as `options.value`.
+ * @param {String} [options.value] the string stored in the `discriminatorKey` property. If not specified, Mongoose uses the `name` parameter.
+ * @param {Boolean} [options.clone=true] By default, `discriminator()` clones the given `schema`. Set to `false` to skip cloning.
+ * @see discriminators /docs/discriminators.html
+ * @return {Function} the constructor Mongoose will use for creating instances of this discriminator model
+ * @api public
+ */
+
+DocumentArrayPath.prototype.discriminator = function(name, schema, options) {
+  if (typeof name === 'function') {
+    name = utils.getFunctionName(name);
+  }
+
+  options = options || {};
+  const tiedValue = utils.isPOJO(options) ? options.value : options;
+  const clone = typeof options.clone === 'boolean' ? options.clone : true;
+
+  if (schema.instanceOfSchema && clone) {
+    schema = schema.clone();
+  }
+
+  schema = discriminator(this.casterConstructor, name, schema, tiedValue);
+
+  const EmbeddedDocument = _createConstructor(schema, null, this.casterConstructor);
+  EmbeddedDocument.baseCasterConstructor = this.casterConstructor;
+
+  try {
+    Object.defineProperty(EmbeddedDocument, 'name', {
+      value: name
+    });
+  } catch (error) {
+    // Ignore error, only happens on old versions of node
+  }
+
+  this.casterConstructor.discriminators[name] = EmbeddedDocument;
+
+  return this.casterConstructor.discriminators[name];
+};
+
+/**
+ * Performs local validations first, then validations on each embedded doc
+ *
+ * @api private
+ */
+
+DocumentArrayPath.prototype.doValidate = function(array, fn, scope, options) {
+  // lazy load
+  MongooseDocumentArray || (MongooseDocumentArray = require('../types/DocumentArray'));
+
+  const _this = this;
+  try {
+    SchemaType.prototype.doValidate.call(this, array, cb, scope);
+  } catch (err) {
+    return fn(err);
+  }
+
+  function cb(err) {
+    if (err) {
+      return fn(err);
+    }
+
+    let count = array && array.length;
+    let error;
+
+    if (!count) {
+      return fn();
+    }
+    if (options && options.updateValidator) {
+      return fn();
+    }
+    if (!utils.isMongooseDocumentArray(array)) {
+      array = new MongooseDocumentArray(array, _this.path, scope);
+    }
+
+    // handle sparse arrays, do not use array.forEach which does not
+    // iterate over sparse elements yet reports array.length including
+    // them :(
+
+    function callback(err) {
+      if (err != null) {
+        error = err;
+      }
+      --count || fn(error);
+    }
+
+    for (let i = 0, len = count; i < len; ++i) {
+      // sidestep sparse entries
+      let doc = array[i];
+      if (doc == null) {
+        --count || fn(error);
+        continue;
+      }
+
+      // If you set the array index directly, the doc might not yet be
+      // a full fledged mongoose subdoc, so make it into one.
+      if (!(doc instanceof Subdocument)) {
+        const Constructor = getConstructor(_this.casterConstructor, array[i]);
+        doc = array[i] = new Constructor(doc, array, undefined, undefined, i);
+      }
+
+      if (options != null && options.validateModifiedOnly && !doc.$isModified()) {
+        --count || fn(error);
+        continue;
+      }
+
+      doc.$__validate(callback);
+    }
+  }
+};
+
+/**
+ * Performs local validations first, then validations on each embedded doc.
+ *
+ * #### Note:
+ *
+ * This method ignores the asynchronous validators.
+ *
+ * @return {MongooseError|undefined}
+ * @api private
+ */
+
+DocumentArrayPath.prototype.doValidateSync = function(array, scope, options) {
+  const schemaTypeError = SchemaType.prototype.doValidateSync.call(this, array, scope);
+  if (schemaTypeError != null) {
+    return schemaTypeError;
+  }
+
+  const count = array && array.length;
+  let resultError = null;
+
+  if (!count) {
+    return;
+  }
+
+  // handle sparse arrays, do not use array.forEach which does not
+  // iterate over sparse elements yet reports array.length including
+  // them :(
+
+  for (let i = 0, len = count; i < len; ++i) {
+    // sidestep sparse entries
+    let doc = array[i];
+    if (!doc) {
+      continue;
+    }
+
+    // If you set the array index directly, the doc might not yet be
+    // a full fledged mongoose subdoc, so make it into one.
+    if (!(doc instanceof Subdocument)) {
+      const Constructor = getConstructor(this.casterConstructor, array[i]);
+      doc = array[i] = new Constructor(doc, array, undefined, undefined, i);
+    }
+
+    if (options != null && options.validateModifiedOnly && !doc.$isModified()) {
+      continue;
+    }
+
+    const subdocValidateError = doc.validateSync();
+
+    if (subdocValidateError && resultError == null) {
+      resultError = subdocValidateError;
+    }
+  }
+
+  return resultError;
+};
+
+/*!
+ * ignore
+ */
+
+DocumentArrayPath.prototype.getDefault = function(scope, init, options) {
+  let ret = typeof this.defaultValue === 'function'
+    ? this.defaultValue.call(scope)
+    : this.defaultValue;
+
+  if (ret == null) {
+    return ret;
+  }
+
+  if (options && options.skipCast) {
+    return ret;
+  }
+
+  // lazy load
+  MongooseDocumentArray || (MongooseDocumentArray = require('../types/DocumentArray'));
+
+  if (!Array.isArray(ret)) {
+    ret = [ret];
+  }
+
+  ret = new MongooseDocumentArray(ret, this.path, scope);
+
+  for (let i = 0; i < ret.length; ++i) {
+    const Constructor = getConstructor(this.casterConstructor, ret[i]);
+    const _subdoc = new Constructor({}, ret, undefined,
+      undefined, i);
+    _subdoc.$init(ret[i]);
+    _subdoc.isNew = true;
+
+    // Make sure all paths in the subdoc are set to `default` instead
+    // of `init` since we used `init`.
+    Object.assign(_subdoc.$__.activePaths.default, _subdoc.$__.activePaths.init);
+    _subdoc.$__.activePaths.init = {};
+
+    ret[i] = _subdoc;
+  }
+
+  return ret;
+};
+
+const _toObjectOptions = Object.freeze({ transform: false, virtuals: false });
+const initDocumentOptions = Object.freeze({ skipId: false, willInit: true });
+
+/**
+ * Casts contents
+ *
+ * @param {Object} value
+ * @param {Document} document that triggers the casting
+ * @api private
+ */
+
+DocumentArrayPath.prototype.cast = function(value, doc, init, prev, options) {
+  // lazy load
+  MongooseDocumentArray || (MongooseDocumentArray = require('../types/DocumentArray'));
+
+  // Skip casting if `value` is the same as the previous value, no need to cast. See gh-9266
+  if (value != null && value[arrayPathSymbol] != null && value === prev) {
+    return value;
+  }
+
+  let selected;
+  let subdoc;
+
+  options = options || {};
+
+  const path = options.path || this.path;
+
+  if (!Array.isArray(value)) {
+    if (!init && !DocumentArrayPath.options.castNonArrays) {
+      throw new CastError('DocumentArray', value, this.path, null, this);
+    }
+    // gh-2442 mark whole array as modified if we're initializing a doc from
+    // the db and the path isn't an array in the document
+    if (!!doc && init) {
+      doc.markModified(path);
+    }
+    return this.cast([value], doc, init, prev, options);
+  }
+
+  // We need to create a new array, otherwise change tracking will
+  // update the old doc (gh-4449)
+  if (!options.skipDocumentArrayCast || utils.isMongooseDocumentArray(value)) {
+    value = new MongooseDocumentArray(value, path, doc);
+  }
+
+  if (prev != null) {
+    value[arrayAtomicsSymbol] = prev[arrayAtomicsSymbol] || {};
+  }
+
+  if (options.arrayPathIndex != null) {
+    value[arrayPathSymbol] = path + '.' + options.arrayPathIndex;
+  }
+
+  const rawArray = utils.isMongooseDocumentArray(value) ? value.__array : value;
+  const len = rawArray.length;
+
+  for (let i = 0; i < len; ++i) {
+    if (!rawArray[i]) {
+      continue;
+    }
+
+    const Constructor = getConstructor(this.casterConstructor, rawArray[i]);
+
+    // Check if the document has a different schema (re gh-3701)
+    if (rawArray[i].$__ != null && !(rawArray[i] instanceof Constructor)) {
+      const spreadDoc = handleSpreadDoc(rawArray[i], true);
+      if (rawArray[i] !== spreadDoc) {
+        rawArray[i] = spreadDoc;
+      } else {
+        rawArray[i] = rawArray[i].toObject({
+          transform: false,
+          // Special case: if different model, but same schema, apply virtuals
+          // re: gh-7898
+          virtuals: rawArray[i].schema === Constructor.schema
+        });
+      }
+    }
+
+    if (rawArray[i] instanceof Subdocument) {
+      if (rawArray[i][documentArrayParent] !== doc) {
+        if (init) {
+          const subdoc = new Constructor(null, value, initDocumentOptions, selected, i);
+          rawArray[i] = subdoc.$init(rawArray[i]);
+        } else {
+          const subdoc = new Constructor(rawArray[i], value, undefined, undefined, i);
+          rawArray[i] = subdoc;
+        }
+      }
+      // Might not have the correct index yet, so ensure it does.
+      if (rawArray[i].__index == null) {
+        rawArray[i].$setIndex(i);
+      }
+    } else if (rawArray[i] != null) {
+      if (init) {
+        if (doc) {
+          selected || (selected = scopePaths(this, doc.$__.selected, init));
+        } else {
+          selected = true;
+        }
+
+        subdoc = new Constructor(null, value, initDocumentOptions, selected, i);
+        rawArray[i] = subdoc.$init(rawArray[i]);
+      } else {
+        if (prev && typeof prev.id === 'function') {
+          subdoc = prev.id(rawArray[i]._id);
+        }
+
+        if (prev && subdoc && utils.deepEqual(subdoc.toObject(_toObjectOptions), rawArray[i])) {
+          // handle resetting doc with existing id and same data
+          subdoc.set(rawArray[i]);
+          // if set() is hooked it will have no return value
+          // see gh-746
+          rawArray[i] = subdoc;
+        } else {
+          try {
+            subdoc = new Constructor(rawArray[i], value, undefined,
+              undefined, i);
+            // if set() is hooked it will have no return value
+            // see gh-746
+            rawArray[i] = subdoc;
+          } catch (error) {
+            throw new CastError('embedded', rawArray[i],
+              value[arrayPathSymbol], error, this);
+          }
+        }
+      }
+    }
+  }
+
+  return value;
+};
+
+/*!
+ * ignore
+ */
+
+DocumentArrayPath.prototype.clone = function() {
+  const options = Object.assign({}, this.options);
+  const schematype = new this.constructor(this.path, this.schema, options, this.schemaOptions);
+  schematype.validators = this.validators.slice();
+  if (this.requiredValidator !== undefined) {
+    schematype.requiredValidator = this.requiredValidator;
+  }
+  schematype.Constructor.discriminators = Object.assign({},
+    this.Constructor.discriminators);
+  return schematype;
+};
+
+/*!
+ * ignore
+ */
+
+DocumentArrayPath.prototype.applyGetters = function(value, scope) {
+  return SchemaType.prototype.applyGetters.call(this, value, scope);
+};
+
+/**
+ * Scopes paths selected in a query to this array.
+ * Necessary for proper default application of subdocument values.
+ *
+ * @param {DocumentArrayPath} array the array to scope `fields` paths
+ * @param {Object|undefined} fields the root fields selected in the query
+ * @param {Boolean|undefined} init if we are being created part of a query result
+ * @api private
+ */
+
+function scopePaths(array, fields, init) {
+  if (!(init && fields)) {
+    return undefined;
+  }
+
+  const path = array.path + '.';
+  const keys = Object.keys(fields);
+  let i = keys.length;
+  const selected = {};
+  let hasKeys;
+  let key;
+  let sub;
+
+  while (i--) {
+    key = keys[i];
+    if (key.startsWith(path)) {
+      sub = key.substring(path.length);
+      if (sub === '$') {
+        continue;
+      }
+      if (sub.startsWith('$.')) {
+        sub = sub.substring(2);
+      }
+      hasKeys || (hasKeys = true);
+      selected[sub] = fields[key];
+    }
+  }
+
+  return hasKeys && selected || undefined;
+}
+
+/*!
+ * ignore
+ */
+
+DocumentArrayPath.defaultOptions = {};
+
+/**
+ * Sets a default option for all DocumentArray instances.
+ *
+ * #### Example:
+ *
+ *     // Make all numbers have option `min` equal to 0.
+ *     mongoose.Schema.DocumentArray.set('_id', false);
+ *
+ * @param {String} option The name of the option you'd like to set (e.g. trim, lowercase, etc...)
+ * @param {Any} value The value of the option you'd like to set.
+ * @return {void}
+ * @function set
+ * @static
+ * @api public
+ */
+
+DocumentArrayPath.set = SchemaType.set;
+
+/*!
+ * Module exports.
+ */
+
+module.exports = DocumentArrayPath;

node_modules/mongoose/lib/schema/index.js

@@ -0,0 +1,39 @@
+
+/*!
+ * Module exports.
+ */
+
+'use strict';
+
+exports.String = require('./string');
+
+exports.Number = require('./number');
+
+exports.Boolean = require('./boolean');
+
+exports.DocumentArray = require('./documentarray');
+
+exports.Subdocument = require('./SubdocumentPath');
+
+exports.Array = require('./array');
+
+exports.Buffer = require('./buffer');
+
+exports.Date = require('./date');
+
+exports.ObjectId = require('./objectid');
+
+exports.Mixed = require('./mixed');
+
+exports.Decimal128 = exports.Decimal = require('./decimal128');
+
+exports.Map = require('./map');
+
+exports.UUID = require('./uuid');
+
+// alias
+
+exports.Oid = exports.ObjectId;
+exports.Object = exports.Mixed;
+exports.Bool = exports.Boolean;
+exports.ObjectID = exports.ObjectId;

node_modules/mongoose/lib/schema/map.js

@@ -0,0 +1,84 @@
+'use strict';
+
+/*!
+ * ignore
+ */
+
+const MongooseMap = require('../types/map');
+const SchemaMapOptions = require('../options/SchemaMapOptions');
+const SchemaType = require('../schematype');
+/*!
+ * ignore
+ */
+
+class Map extends SchemaType {
+  constructor(key, options) {
+    super(key, options, 'Map');
+    this.$isSchemaMap = true;
+  }
+
+  set(option, value) {
+    return SchemaType.set(option, value);
+  }
+
+  cast(val, doc, init) {
+    if (val instanceof MongooseMap) {
+      return val;
+    }
+
+    const path = this.path;
+
+    if (init) {
+      const map = new MongooseMap({}, path, doc, this.$__schemaType);
+
+      if (val instanceof global.Map) {
+        for (const key of val.keys()) {
+          let _val = val.get(key);
+          if (_val == null) {
+            _val = map.$__schemaType._castNullish(_val);
+          } else {
+            _val = map.$__schemaType.cast(_val, doc, true, null, { path: path + '.' + key });
+          }
+          map.$init(key, _val);
+        }
+      } else {
+        for (const key of Object.keys(val)) {
+          let _val = val[key];
+          if (_val == null) {
+            _val = map.$__schemaType._castNullish(_val);
+          } else {
+            _val = map.$__schemaType.cast(_val, doc, true, null, { path: path + '.' + key });
+          }
+          map.$init(key, _val);
+        }
+      }
+
+      return map;
+    }
+
+    return new MongooseMap(val, path, doc, this.$__schemaType);
+  }
+
+  clone() {
+    const schematype = super.clone();
+
+    if (this.$__schemaType != null) {
+      schematype.$__schemaType = this.$__schemaType.clone();
+    }
+    return schematype;
+  }
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+Map.schemaName = 'Map';
+
+Map.prototype.OptionsConstructor = SchemaMapOptions;
+
+Map.defaultOptions = {};
+
+module.exports = Map;

node_modules/mongoose/lib/schema/mixed.js

@@ -0,0 +1,129 @@
+/*!
+ * Module dependencies.
+ */
+
+'use strict';
+
+const SchemaType = require('../schematype');
+const symbols = require('./symbols');
+const isObject = require('../helpers/isObject');
+const utils = require('../utils');
+
+/**
+ * Mixed SchemaType constructor.
+ *
+ * @param {String} path
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function Mixed(path, options) {
+  if (options && options.default) {
+    const def = options.default;
+    if (Array.isArray(def) && def.length === 0) {
+      // make sure empty array defaults are handled
+      options.default = Array;
+    } else if (!options.shared && isObject(def) && Object.keys(def).length === 0) {
+      // prevent odd "shared" objects between documents
+      options.default = function() {
+        return {};
+      };
+    }
+  }
+
+  SchemaType.call(this, path, options, 'Mixed');
+
+  this[symbols.schemaMixedSymbol] = true;
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+Mixed.schemaName = 'Mixed';
+
+Mixed.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+Mixed.prototype = Object.create(SchemaType.prototype);
+Mixed.prototype.constructor = Mixed;
+
+/**
+ * Attaches a getter for all Mixed paths.
+ *
+ * #### Example:
+ *
+ *     // Hide the 'hidden' path
+ *     mongoose.Schema.Mixed.get(v => Object.assign({}, v, { hidden: null }));
+ *
+ *     const Model = mongoose.model('Test', new Schema({ test: {} }));
+ *     new Model({ test: { hidden: 'Secret!' } }).test.hidden; // null
+ *
+ * @param {Function} getter
+ * @return {this}
+ * @function get
+ * @static
+ * @api public
+ */
+
+Mixed.get = SchemaType.get;
+
+/**
+ * Sets a default option for all Mixed instances.
+ *
+ * #### Example:
+ *
+ *     // Make all mixed instances have `required` of true by default.
+ *     mongoose.Schema.Mixed.set('required', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ test: mongoose.Mixed }));
+ *     new User({ }).validateSync().errors.test.message; // Path `test` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+Mixed.set = SchemaType.set;
+
+/**
+ * Casts `val` for Mixed.
+ *
+ * _this is a no-op_
+ *
+ * @param {Object} value to cast
+ * @api private
+ */
+
+Mixed.prototype.cast = function(val) {
+  if (val instanceof Error) {
+    return utils.errorToPOJO(val);
+  }
+  return val;
+};
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $cond
+ * @param {any} [val]
+ * @api private
+ */
+
+Mixed.prototype.castForQuery = function($cond, val) {
+  return val;
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = Mixed;

node_modules/mongoose/lib/schema/number.js

@@ -0,0 +1,438 @@
+'use strict';
+
+/*!
+ * Module requirements.
+ */
+
+const MongooseError = require('../error/index');
+const SchemaNumberOptions = require('../options/SchemaNumberOptions');
+const SchemaType = require('../schematype');
+const castNumber = require('../cast/number');
+const handleBitwiseOperator = require('./operators/bitwise');
+const utils = require('../utils');
+
+const CastError = SchemaType.CastError;
+
+/**
+ * Number SchemaType constructor.
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaNumber(key, options) {
+  SchemaType.call(this, key, options, 'Number');
+}
+
+/**
+ * Attaches a getter for all Number instances.
+ *
+ * #### Example:
+ *
+ *     // Make all numbers round down
+ *     mongoose.Number.get(function(v) { return Math.floor(v); });
+ *
+ *     const Model = mongoose.model('Test', new Schema({ test: Number }));
+ *     new Model({ test: 3.14 }).test; // 3
+ *
+ * @param {Function} getter
+ * @return {this}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaNumber.get = SchemaType.get;
+
+/**
+ * Sets a default option for all Number instances.
+ *
+ * #### Example:
+ *
+ *     // Make all numbers have option `min` equal to 0.
+ *     mongoose.Schema.Number.set('min', 0);
+ *
+ *     const Order = mongoose.model('Order', new Schema({ amount: Number }));
+ *     new Order({ amount: -10 }).validateSync().errors.amount.message; // Path `amount` must be larger than 0.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SchemaNumber.set = SchemaType.set;
+
+/*!
+ * ignore
+ */
+
+SchemaNumber._cast = castNumber;
+
+/**
+ * Get/set the function used to cast arbitrary values to numbers.
+ *
+ * #### Example:
+ *
+ *     // Make Mongoose cast empty strings '' to 0 for paths declared as numbers
+ *     const original = mongoose.Number.cast();
+ *     mongoose.Number.cast(v => {
+ *       if (v === '') { return 0; }
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.Number.cast(false);
+ *
+ * @param {Function} caster
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaNumber.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaNumber._defaultCaster = v => {
+  if (typeof v !== 'number') {
+    throw new Error();
+  }
+  return v;
+};
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaNumber.schemaName = 'Number';
+
+SchemaNumber.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaNumber.prototype = Object.create(SchemaType.prototype);
+SchemaNumber.prototype.constructor = SchemaNumber;
+SchemaNumber.prototype.OptionsConstructor = SchemaNumberOptions;
+
+/*!
+ * ignore
+ */
+
+SchemaNumber._checkRequired = v => typeof v === 'number' || v instanceof Number;
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+SchemaNumber.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaNumber.prototype.checkRequired = function checkRequired(value, doc) {
+  if (typeof value === 'object' && SchemaType._isRef(this, value, doc, true)) {
+    return value != null;
+  }
+
+  // `require('util').inherits()` does **not** copy static properties, and
+  // plugins like mongoose-float use `inherits()` for pre-ES6.
+  const _checkRequired = typeof this.constructor.checkRequired === 'function' ?
+    this.constructor.checkRequired() :
+    SchemaNumber.checkRequired();
+
+  return _checkRequired(value);
+};
+
+/**
+ * Sets a minimum number validator.
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ n: { type: Number, min: 10 })
+ *     const M = db.model('M', s)
+ *     const m = new M({ n: 9 })
+ *     m.save(function (err) {
+ *       console.error(err) // validator error
+ *       m.n = 10;
+ *       m.save() // success
+ *     })
+ *
+ *     // custom error messages
+ *     // We can also use the special {MIN} token which will be replaced with the invalid value
+ *     const min = [10, 'The value of path `{PATH}` ({VALUE}) is beneath the limit ({MIN}).'];
+ *     const schema = new Schema({ n: { type: Number, min: min })
+ *     const M = mongoose.model('Measurement', schema);
+ *     const s= new M({ n: 4 });
+ *     s.validate(function (err) {
+ *       console.log(String(err)) // ValidationError: The value of path `n` (4) is beneath the limit (10).
+ *     })
+ *
+ * @param {Number} value minimum number
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaNumber.prototype.min = function(value, message) {
+  if (this.minValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.minValidator;
+    }, this);
+  }
+
+  if (value !== null && value !== undefined) {
+    let msg = message || MongooseError.messages.Number.min;
+    msg = msg.replace(/{MIN}/, value);
+    this.validators.push({
+      validator: this.minValidator = function(v) {
+        return v == null || v >= value;
+      },
+      message: msg,
+      type: 'min',
+      min: value
+    });
+  }
+
+  return this;
+};
+
+/**
+ * Sets a maximum number validator.
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ n: { type: Number, max: 10 })
+ *     const M = db.model('M', s)
+ *     const m = new M({ n: 11 })
+ *     m.save(function (err) {
+ *       console.error(err) // validator error
+ *       m.n = 10;
+ *       m.save() // success
+ *     })
+ *
+ *     // custom error messages
+ *     // We can also use the special {MAX} token which will be replaced with the invalid value
+ *     const max = [10, 'The value of path `{PATH}` ({VALUE}) exceeds the limit ({MAX}).'];
+ *     const schema = new Schema({ n: { type: Number, max: max })
+ *     const M = mongoose.model('Measurement', schema);
+ *     const s= new M({ n: 4 });
+ *     s.validate(function (err) {
+ *       console.log(String(err)) // ValidationError: The value of path `n` (4) exceeds the limit (10).
+ *     })
+ *
+ * @param {Number} maximum number
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaNumber.prototype.max = function(value, message) {
+  if (this.maxValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.maxValidator;
+    }, this);
+  }
+
+  if (value !== null && value !== undefined) {
+    let msg = message || MongooseError.messages.Number.max;
+    msg = msg.replace(/{MAX}/, value);
+    this.validators.push({
+      validator: this.maxValidator = function(v) {
+        return v == null || v <= value;
+      },
+      message: msg,
+      type: 'max',
+      max: value
+    });
+  }
+
+  return this;
+};
+
+/**
+ * Sets a enum validator
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ n: { type: Number, enum: [1, 2, 3] });
+ *     const M = db.model('M', s);
+ *
+ *     const m = new M({ n: 4 });
+ *     await m.save(); // throws validation error
+ *
+ *     m.n = 3;
+ *     await m.save(); // succeeds
+ *
+ * @param {Array} values allowed values
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaNumber.prototype.enum = function(values, message) {
+  if (this.enumValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.enumValidator;
+    }, this);
+  }
+
+
+  if (!Array.isArray(values)) {
+    const isObjectSyntax = utils.isPOJO(values) && values.values != null;
+    if (isObjectSyntax) {
+      message = values.message;
+      values = values.values;
+    } else if (typeof values === 'number') {
+      values = Array.prototype.slice.call(arguments);
+      message = null;
+    }
+
+    if (utils.isPOJO(values)) {
+      values = Object.values(values);
+    }
+    message = message || MongooseError.messages.Number.enum;
+  }
+
+  message = message == null ? MongooseError.messages.Number.enum : message;
+
+  this.enumValidator = v => v == null || values.indexOf(v) !== -1;
+  this.validators.push({
+    validator: this.enumValidator,
+    message: message,
+    type: 'enum',
+    enumValues: values
+  });
+
+  return this;
+};
+
+/**
+ * Casts to number
+ *
+ * @param {Object} value value to cast
+ * @param {Document} doc document that triggers the casting
+ * @param {Boolean} init
+ * @api private
+ */
+
+SchemaNumber.prototype.cast = function(value, doc, init) {
+  if (typeof value !== 'number' && SchemaType._isRef(this, value, doc, init)) {
+    if (value == null || utils.isNonBuiltinObject(value)) {
+      return this._castRef(value, doc, init);
+    }
+  }
+
+  const val = value && typeof value._id !== 'undefined' ?
+    value._id : // documents
+    value;
+
+  let castNumber;
+  if (typeof this._castFunction === 'function') {
+    castNumber = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castNumber = this.constructor.cast();
+  } else {
+    castNumber = SchemaNumber.cast();
+  }
+
+  try {
+    return castNumber(val);
+  } catch (err) {
+    throw new CastError('Number', val, this.path, err, this);
+  }
+};
+
+/*!
+ * ignore
+ */
+
+function handleSingle(val) {
+  return this.cast(val);
+}
+
+function handleArray(val) {
+  const _this = this;
+  if (!Array.isArray(val)) {
+    return [this.cast(val)];
+  }
+  return val.map(function(m) {
+    return _this.cast(m);
+  });
+}
+
+SchemaNumber.prototype.$conditionalHandlers =
+    utils.options(SchemaType.prototype.$conditionalHandlers, {
+      $bitsAllClear: handleBitwiseOperator,
+      $bitsAnyClear: handleBitwiseOperator,
+      $bitsAllSet: handleBitwiseOperator,
+      $bitsAnySet: handleBitwiseOperator,
+      $gt: handleSingle,
+      $gte: handleSingle,
+      $lt: handleSingle,
+      $lte: handleSingle,
+      $mod: handleArray
+    });
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} [value]
+ * @api private
+ */
+
+SchemaNumber.prototype.castForQuery = function($conditional, val, context) {
+  let handler;
+  if ($conditional != null) {
+    handler = this.$conditionalHandlers[$conditional];
+    if (!handler) {
+      throw new CastError('number', val, this.path, null, this);
+    }
+    return handler.call(this, val, context);
+  }
+  val = this.applySetters(val, context);
+  return val;
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaNumber;

node_modules/mongoose/lib/schema/objectid.js

@@ -0,0 +1,295 @@
+/*!
+ * Module dependencies.
+ */
+
+'use strict';
+
+const SchemaObjectIdOptions = require('../options/SchemaObjectIdOptions');
+const SchemaType = require('../schematype');
+const castObjectId = require('../cast/objectid');
+const getConstructorName = require('../helpers/getConstructorName');
+const oid = require('../types/objectid');
+const isBsonType = require('../helpers/isBsonType');
+const utils = require('../utils');
+
+const CastError = SchemaType.CastError;
+let Document;
+
+/**
+ * ObjectId SchemaType constructor.
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function ObjectId(key, options) {
+  const isKeyHexStr = typeof key === 'string' && key.length === 24 && /^[a-f0-9]+$/i.test(key);
+  const suppressWarning = options && options.suppressWarning;
+  if ((isKeyHexStr || typeof key === 'undefined') && !suppressWarning) {
+    utils.warn('mongoose: To create a new ObjectId please try ' +
+      '`Mongoose.Types.ObjectId` instead of using ' +
+      '`Mongoose.Schema.ObjectId`. Set the `suppressWarning` option if ' +
+      'you\'re trying to create a hex char path in your schema.');
+  }
+  SchemaType.call(this, key, options, 'ObjectId');
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+ObjectId.schemaName = 'ObjectId';
+
+ObjectId.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+ObjectId.prototype = Object.create(SchemaType.prototype);
+ObjectId.prototype.constructor = ObjectId;
+ObjectId.prototype.OptionsConstructor = SchemaObjectIdOptions;
+
+/**
+ * Attaches a getter for all ObjectId instances
+ *
+ * #### Example:
+ *
+ *     // Always convert to string when getting an ObjectId
+ *     mongoose.ObjectId.get(v => v.toString());
+ *
+ *     const Model = mongoose.model('Test', new Schema({}));
+ *     typeof (new Model({})._id); // 'string'
+ *
+ * @param {Function} getter
+ * @return {this}
+ * @function get
+ * @static
+ * @api public
+ */
+
+ObjectId.get = SchemaType.get;
+
+/**
+ * Sets a default option for all ObjectId instances.
+ *
+ * #### Example:
+ *
+ *     // Make all object ids have option `required` equal to true.
+ *     mongoose.Schema.ObjectId.set('required', true);
+ *
+ *     const Order = mongoose.model('Order', new Schema({ userId: ObjectId }));
+ *     new Order({ }).validateSync().errors.userId.message; // Path `userId` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+ObjectId.set = SchemaType.set;
+
+/**
+ * Adds an auto-generated ObjectId default if turnOn is true.
+ * @param {Boolean} turnOn auto generated ObjectId defaults
+ * @api public
+ * @return {SchemaType} this
+ */
+
+ObjectId.prototype.auto = function(turnOn) {
+  if (turnOn) {
+    this.default(defaultId);
+    this.set(resetId);
+  }
+
+  return this;
+};
+
+/*!
+ * ignore
+ */
+
+ObjectId._checkRequired = v => isBsonType(v, 'ObjectId');
+
+/*!
+ * ignore
+ */
+
+ObjectId._cast = castObjectId;
+
+/**
+ * Get/set the function used to cast arbitrary values to objectids.
+ *
+ * #### Example:
+ *
+ *     // Make Mongoose only try to cast length 24 strings. By default, any 12
+ *     // char string is a valid ObjectId.
+ *     const original = mongoose.ObjectId.cast();
+ *     mongoose.ObjectId.cast(v => {
+ *       assert.ok(typeof v !== 'string' || v.length === 24);
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.ObjectId.cast(false);
+ *
+ * @param {Function} caster
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+ObjectId.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+ObjectId._defaultCaster = v => {
+  if (!(isBsonType(v, 'ObjectId'))) {
+    throw new Error(v + ' is not an instance of ObjectId');
+  }
+  return v;
+};
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * #### Example:
+ *
+ *     // Allow empty strings to pass `required` check
+ *     mongoose.Schema.Types.String.checkRequired(v => v != null);
+ *
+ *     const M = mongoose.model({ str: { type: String, required: true } });
+ *     new M({ str: '' }).validateSync(); // `null`, validation passes!
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+ObjectId.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+ObjectId.prototype.checkRequired = function checkRequired(value, doc) {
+  if (SchemaType._isRef(this, value, doc, true)) {
+    return !!value;
+  }
+
+  // `require('util').inherits()` does **not** copy static properties, and
+  // plugins like mongoose-float use `inherits()` for pre-ES6.
+  const _checkRequired = typeof this.constructor.checkRequired === 'function' ?
+    this.constructor.checkRequired() :
+    ObjectId.checkRequired();
+
+  return _checkRequired(value);
+};
+
+/**
+ * Casts to ObjectId
+ *
+ * @param {Object} value
+ * @param {Object} doc
+ * @param {Boolean} init whether this is an initialization cast
+ * @api private
+ */
+
+ObjectId.prototype.cast = function(value, doc, init) {
+  if (!(isBsonType(value, 'ObjectId')) && SchemaType._isRef(this, value, doc, init)) {
+    // wait! we may need to cast this to a document
+    if ((getConstructorName(value) || '').toLowerCase() === 'objectid') {
+      return new oid(value.toHexString());
+    }
+
+    if (value == null || utils.isNonBuiltinObject(value)) {
+      return this._castRef(value, doc, init);
+    }
+  }
+
+  let castObjectId;
+  if (typeof this._castFunction === 'function') {
+    castObjectId = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castObjectId = this.constructor.cast();
+  } else {
+    castObjectId = ObjectId.cast();
+  }
+
+  try {
+    return castObjectId(value);
+  } catch (error) {
+    throw new CastError('ObjectId', value, this.path, error, this);
+  }
+};
+
+/*!
+ * ignore
+ */
+
+function handleSingle(val) {
+  return this.cast(val);
+}
+
+ObjectId.prototype.$conditionalHandlers =
+    utils.options(SchemaType.prototype.$conditionalHandlers, {
+      $gt: handleSingle,
+      $gte: handleSingle,
+      $lt: handleSingle,
+      $lte: handleSingle
+    });
+
+/*!
+ * ignore
+ */
+
+function defaultId() {
+  return new oid();
+}
+
+defaultId.$runBeforeSetters = true;
+
+function resetId(v) {
+  Document || (Document = require('./../document'));
+
+  if (this instanceof Document) {
+    if (v === void 0) {
+      const _v = new oid();
+      return _v;
+    }
+  }
+
+  return v;
+}
+
+/*!
+ * Module exports.
+ */
+
+module.exports = ObjectId;

node_modules/mongoose/lib/schema/operators/bitwise.js

@@ -0,0 +1,38 @@
+/*!
+ * Module requirements.
+ */
+
+'use strict';
+
+const CastError = require('../../error/cast');
+
+/*!
+ * ignore
+ */
+
+function handleBitwiseOperator(val) {
+  const _this = this;
+  if (Array.isArray(val)) {
+    return val.map(function(v) {
+      return _castNumber(_this.path, v);
+    });
+  } else if (Buffer.isBuffer(val)) {
+    return val;
+  }
+  // Assume trying to cast to number
+  return _castNumber(_this.path, val);
+}
+
+/*!
+ * ignore
+ */
+
+function _castNumber(path, num) {
+  const v = Number(num);
+  if (isNaN(v)) {
+    throw new CastError('number', num, path);
+  }
+  return v;
+}
+
+module.exports = handleBitwiseOperator;

node_modules/mongoose/lib/schema/operators/exists.js

@@ -0,0 +1,12 @@
+'use strict';
+
+const castBoolean = require('../../cast/boolean');
+
+/*!
+ * ignore
+ */
+
+module.exports = function(val) {
+  const path = this != null ? this.path : null;
+  return castBoolean(val, path);
+};

node_modules/mongoose/lib/schema/operators/geospatial.js

@@ -0,0 +1,107 @@
+/*!
+ * Module requirements.
+ */
+
+'use strict';
+
+const castArraysOfNumbers = require('./helpers').castArraysOfNumbers;
+const castToNumber = require('./helpers').castToNumber;
+
+/*!
+ * ignore
+ */
+
+exports.cast$geoIntersects = cast$geoIntersects;
+exports.cast$near = cast$near;
+exports.cast$within = cast$within;
+
+function cast$near(val) {
+  const SchemaArray = require('../array');
+
+  if (Array.isArray(val)) {
+    castArraysOfNumbers(val, this);
+    return val;
+  }
+
+  _castMinMaxDistance(this, val);
+
+  if (val && val.$geometry) {
+    return cast$geometry(val, this);
+  }
+
+  if (!Array.isArray(val)) {
+    throw new TypeError('$near must be either an array or an object ' +
+      'with a $geometry property');
+  }
+
+  return SchemaArray.prototype.castForQuery.call(this, null, val);
+}
+
+function cast$geometry(val, self) {
+  switch (val.$geometry.type) {
+    case 'Polygon':
+    case 'LineString':
+    case 'Point':
+      castArraysOfNumbers(val.$geometry.coordinates, self);
+      break;
+    default:
+      // ignore unknowns
+      break;
+  }
+
+  _castMinMaxDistance(self, val);
+
+  return val;
+}
+
+function cast$within(val) {
+  _castMinMaxDistance(this, val);
+
+  if (val.$box || val.$polygon) {
+    const type = val.$box ? '$box' : '$polygon';
+    val[type].forEach(arr => {
+      if (!Array.isArray(arr)) {
+        const msg = 'Invalid $within $box argument. '
+            + 'Expected an array, received ' + arr;
+        throw new TypeError(msg);
+      }
+      arr.forEach((v, i) => {
+        arr[i] = castToNumber.call(this, v);
+      });
+    });
+  } else if (val.$center || val.$centerSphere) {
+    const type = val.$center ? '$center' : '$centerSphere';
+    val[type].forEach((item, i) => {
+      if (Array.isArray(item)) {
+        item.forEach((v, j) => {
+          item[j] = castToNumber.call(this, v);
+        });
+      } else {
+        val[type][i] = castToNumber.call(this, item);
+      }
+    });
+  } else if (val.$geometry) {
+    cast$geometry(val, this);
+  }
+
+  return val;
+}
+
+function cast$geoIntersects(val) {
+  const geo = val.$geometry;
+  if (!geo) {
+    return;
+  }
+
+  cast$geometry(val, this);
+  return val;
+}
+
+function _castMinMaxDistance(self, val) {
+  if (val.$maxDistance) {
+    val.$maxDistance = castToNumber.call(self, val.$maxDistance);
+  }
+  if (val.$minDistance) {
+    val.$minDistance = castToNumber.call(self, val.$minDistance);
+  }
+}

node_modules/mongoose/lib/schema/operators/helpers.js

@@ -0,0 +1,32 @@
+'use strict';
+
+/*!
+ * Module requirements.
+ */
+
+const SchemaNumber = require('../number');
+
+/*!
+ * ignore
+ */
+
+exports.castToNumber = castToNumber;
+exports.castArraysOfNumbers = castArraysOfNumbers;
+
+/*!
+ * ignore
+ */
+
+function castToNumber(val) {
+  return SchemaNumber.cast()(val);
+}
+
+function castArraysOfNumbers(arr, self) {
+  arr.forEach(function(v, i) {
+    if (Array.isArray(v)) {
+      castArraysOfNumbers(v, self);
+    } else {
+      arr[i] = castToNumber.call(self, v);
+    }
+  });
+}

node_modules/mongoose/lib/schema/operators/text.js

@@ -0,0 +1,39 @@
+'use strict';
+
+const CastError = require('../../error/cast');
+const castBoolean = require('../../cast/boolean');
+const castString = require('../../cast/string');
+
+/**
+ * Casts val to an object suitable for `$text`. Throws an error if the object
+ * can't be casted.
+ *
+ * @param {Any} val value to cast
+ * @param {String} [path] path to associate with any errors that occured
+ * @return {Object} casted object
+ * @see https://www.mongodb.com/docs/manual/reference/operator/query/text/
+ * @api private
+ */
+
+module.exports = function(val, path) {
+  if (val == null || typeof val !== 'object') {
+    throw new CastError('$text', val, path);
+  }
+
+  if (val.$search != null) {
+    val.$search = castString(val.$search, path + '.$search');
+  }
+  if (val.$language != null) {
+    val.$language = castString(val.$language, path + '.$language');
+  }
+  if (val.$caseSensitive != null) {
+    val.$caseSensitive = castBoolean(val.$caseSensitive,
+      path + '.$castSensitive');
+  }
+  if (val.$diacriticSensitive != null) {
+    val.$diacriticSensitive = castBoolean(val.$diacriticSensitive,
+      path + '.$diacriticSensitive');
+  }
+
+  return val;
+};

node_modules/mongoose/lib/schema/operators/type.js

@@ -0,0 +1,20 @@
+'use strict';
+
+/*!
+ * ignore
+ */
+
+module.exports = function(val) {
+  if (Array.isArray(val)) {
+    if (!val.every(v => typeof v === 'number' || typeof v === 'string')) {
+      throw new Error('$type array values must be strings or numbers');
+    }
+    return val;
+  }
+
+  if (typeof val !== 'number' && typeof val !== 'string') {
+    throw new Error('$type parameter must be number, string, or array of numbers and strings');
+  }
+
+  return val;
+};

node_modules/mongoose/lib/schema/string.js

@@ -0,0 +1,694 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+const SchemaType = require('../schematype');
+const MongooseError = require('../error/index');
+const SchemaStringOptions = require('../options/SchemaStringOptions');
+const castString = require('../cast/string');
+const utils = require('../utils');
+const isBsonType = require('../helpers/isBsonType');
+
+const CastError = SchemaType.CastError;
+
+/**
+ * String SchemaType constructor.
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaString(key, options) {
+  this.enumValues = [];
+  this.regExp = null;
+  SchemaType.call(this, key, options, 'String');
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaString.schemaName = 'String';
+
+SchemaString.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaString.prototype = Object.create(SchemaType.prototype);
+SchemaString.prototype.constructor = SchemaString;
+Object.defineProperty(SchemaString.prototype, 'OptionsConstructor', {
+  configurable: false,
+  enumerable: false,
+  writable: false,
+  value: SchemaStringOptions
+});
+
+/*!
+ * ignore
+ */
+
+SchemaString._cast = castString;
+
+/**
+ * Get/set the function used to cast arbitrary values to strings.
+ *
+ * #### Example:
+ *
+ *     // Throw an error if you pass in an object. Normally, Mongoose allows
+ *     // objects with custom `toString()` functions.
+ *     const original = mongoose.Schema.Types.String.cast();
+ *     mongoose.Schema.Types.String.cast(v => {
+ *       assert.ok(v == null || typeof v !== 'object');
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.Schema.Types.String.cast(false);
+ *
+ * @param {Function} caster
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaString.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaString._defaultCaster = v => {
+  if (v != null && typeof v !== 'string') {
+    throw new Error();
+  }
+  return v;
+};
+
+/**
+ * Attaches a getter for all String instances.
+ *
+ * #### Example:
+ *
+ *     // Make all numbers round down
+ *     mongoose.Schema.String.get(v => v.toLowerCase());
+ *
+ *     const Model = mongoose.model('Test', new Schema({ test: String }));
+ *     new Model({ test: 'FOO' }).test; // 'foo'
+ *
+ * @param {Function} getter
+ * @return {this}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaString.get = SchemaType.get;
+
+/**
+ * Sets a default option for all String instances.
+ *
+ * #### Example:
+ *
+ *     // Make all strings have option `trim` equal to true.
+ *     mongoose.Schema.String.set('trim', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ name: String }));
+ *     new User({ name: '   John Doe   ' }).name; // 'John Doe'
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SchemaString.set = SchemaType.set;
+
+/*!
+ * ignore
+ */
+
+SchemaString._checkRequired = v => (v instanceof String || typeof v === 'string') && v.length;
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * #### Example:
+ *
+ *     // Allow empty strings to pass `required` check
+ *     mongoose.Schema.Types.String.checkRequired(v => v != null);
+ *
+ *     const M = mongoose.model({ str: { type: String, required: true } });
+ *     new M({ str: '' }).validateSync(); // `null`, validation passes!
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+SchemaString.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Adds an enum validator
+ *
+ * #### Example:
+ *
+ *     const states = ['opening', 'open', 'closing', 'closed']
+ *     const s = new Schema({ state: { type: String, enum: states }})
+ *     const M = db.model('M', s)
+ *     const m = new M({ state: 'invalid' })
+ *     m.save(function (err) {
+ *       console.error(String(err)) // ValidationError: `invalid` is not a valid enum value for path `state`.
+ *       m.state = 'open'
+ *       m.save(callback) // success
+ *     })
+ *
+ *     // or with custom error messages
+ *     const enum = {
+ *       values: ['opening', 'open', 'closing', 'closed'],
+ *       message: 'enum validator failed for path `{PATH}` with value `{VALUE}`'
+ *     }
+ *     const s = new Schema({ state: { type: String, enum: enum })
+ *     const M = db.model('M', s)
+ *     const m = new M({ state: 'invalid' })
+ *     m.save(function (err) {
+ *       console.error(String(err)) // ValidationError: enum validator failed for path `state` with value `invalid`
+ *       m.state = 'open'
+ *       m.save(callback) // success
+ *     })
+ *
+ * @param {...String|Object} [args] enumeration values
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaString.prototype.enum = function() {
+  if (this.enumValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.enumValidator;
+    }, this);
+    this.enumValidator = false;
+  }
+
+  if (arguments[0] === void 0 || arguments[0] === false) {
+    return this;
+  }
+
+  let values;
+  let errorMessage;
+
+  if (utils.isObject(arguments[0])) {
+    if (Array.isArray(arguments[0].values)) {
+      values = arguments[0].values;
+      errorMessage = arguments[0].message;
+    } else {
+      values = utils.object.vals(arguments[0]);
+      errorMessage = MongooseError.messages.String.enum;
+    }
+  } else {
+    values = arguments;
+    errorMessage = MongooseError.messages.String.enum;
+  }
+
+  for (const value of values) {
+    if (value !== undefined) {
+      this.enumValues.push(this.cast(value));
+    }
+  }
+
+  const vals = this.enumValues;
+  this.enumValidator = function(v) {
+    return undefined === v || ~vals.indexOf(v);
+  };
+  this.validators.push({
+    validator: this.enumValidator,
+    message: errorMessage,
+    type: 'enum',
+    enumValues: vals
+  });
+
+  return this;
+};
+
+/**
+ * Adds a lowercase [setter](https://mongoosejs.com/docs/api/schematype.html#schematype_SchemaType-set).
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ email: { type: String, lowercase: true }})
+ *     const M = db.model('M', s);
+ *     const m = new M({ email: 'SomeEmail@example.COM' });
+ *     console.log(m.email) // someemail@example.com
+ *     M.find({ email: 'SomeEmail@example.com' }); // Queries by 'someemail@example.com'
+ *
+ * Note that `lowercase` does **not** affect regular expression queries:
+ *
+ * #### Example:
+ *
+ *     // Still queries for documents whose `email` matches the regular
+ *     // expression /SomeEmail/. Mongoose does **not** convert the RegExp
+ *     // to lowercase.
+ *     M.find({ email: /SomeEmail/ });
+ *
+ * @api public
+ * @return {SchemaType} this
+ */
+
+SchemaString.prototype.lowercase = function(shouldApply) {
+  if (arguments.length > 0 && !shouldApply) {
+    return this;
+  }
+  return this.set(v => {
+    if (typeof v !== 'string') {
+      v = this.cast(v);
+    }
+    if (v) {
+      return v.toLowerCase();
+    }
+    return v;
+  });
+};
+
+/**
+ * Adds an uppercase [setter](https://mongoosejs.com/docs/api/schematype.html#schematype_SchemaType-set).
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ caps: { type: String, uppercase: true }})
+ *     const M = db.model('M', s);
+ *     const m = new M({ caps: 'an example' });
+ *     console.log(m.caps) // AN EXAMPLE
+ *     M.find({ caps: 'an example' }) // Matches documents where caps = 'AN EXAMPLE'
+ *
+ * Note that `uppercase` does **not** affect regular expression queries:
+ *
+ * #### Example:
+ *
+ *     // Mongoose does **not** convert the RegExp to uppercase.
+ *     M.find({ email: /an example/ });
+ *
+ * @api public
+ * @return {SchemaType} this
+ */
+
+SchemaString.prototype.uppercase = function(shouldApply) {
+  if (arguments.length > 0 && !shouldApply) {
+    return this;
+  }
+  return this.set(v => {
+    if (typeof v !== 'string') {
+      v = this.cast(v);
+    }
+    if (v) {
+      return v.toUpperCase();
+    }
+    return v;
+  });
+};
+
+/**
+ * Adds a trim [setter](https://mongoosejs.com/docs/api/schematype.html#schematype_SchemaType-set).
+ *
+ * The string value will be [trimmed](https://masteringjs.io/tutorials/fundamentals/trim-string) when set.
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ name: { type: String, trim: true }});
+ *     const M = db.model('M', s);
+ *     const string = ' some name ';
+ *     console.log(string.length); // 11
+ *     const m = new M({ name: string });
+ *     console.log(m.name.length); // 9
+ *
+ *     // Equivalent to `findOne({ name: string.trim() })`
+ *     M.findOne({ name: string });
+ *
+ * Note that `trim` does **not** affect regular expression queries:
+ *
+ * #### Example:
+ *
+ *     // Mongoose does **not** trim whitespace from the RegExp.
+ *     M.find({ name: / some name / });
+ *
+ * @api public
+ * @return {SchemaType} this
+ */
+
+SchemaString.prototype.trim = function(shouldTrim) {
+  if (arguments.length > 0 && !shouldTrim) {
+    return this;
+  }
+  return this.set(v => {
+    if (typeof v !== 'string') {
+      v = this.cast(v);
+    }
+    if (v) {
+      return v.trim();
+    }
+    return v;
+  });
+};
+
+/**
+ * Sets a minimum length validator.
+ *
+ * #### Example:
+ *
+ *     const schema = new Schema({ postalCode: { type: String, minlength: 5 })
+ *     const Address = db.model('Address', schema)
+ *     const address = new Address({ postalCode: '9512' })
+ *     address.save(function (err) {
+ *       console.error(err) // validator error
+ *       address.postalCode = '95125';
+ *       address.save() // success
+ *     })
+ *
+ *     // custom error messages
+ *     // We can also use the special {MINLENGTH} token which will be replaced with the minimum allowed length
+ *     const minlength = [5, 'The value of path `{PATH}` (`{VALUE}`) is shorter than the minimum allowed length ({MINLENGTH}).'];
+ *     const schema = new Schema({ postalCode: { type: String, minlength: minlength })
+ *     const Address = mongoose.model('Address', schema);
+ *     const address = new Address({ postalCode: '9512' });
+ *     address.validate(function (err) {
+ *       console.log(String(err)) // ValidationError: The value of path `postalCode` (`9512`) is shorter than the minimum length (5).
+ *     })
+ *
+ * @param {Number} value minimum string length
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaString.prototype.minlength = function(value, message) {
+  if (this.minlengthValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.minlengthValidator;
+    }, this);
+  }
+
+  if (value !== null && value !== undefined) {
+    let msg = message || MongooseError.messages.String.minlength;
+    msg = msg.replace(/{MINLENGTH}/, value);
+    this.validators.push({
+      validator: this.minlengthValidator = function(v) {
+        return v === null || v.length >= value;
+      },
+      message: msg,
+      type: 'minlength',
+      minlength: value
+    });
+  }
+
+  return this;
+};
+
+SchemaString.prototype.minLength = SchemaString.prototype.minlength;
+
+/**
+ * Sets a maximum length validator.
+ *
+ * #### Example:
+ *
+ *     const schema = new Schema({ postalCode: { type: String, maxlength: 9 })
+ *     const Address = db.model('Address', schema)
+ *     const address = new Address({ postalCode: '9512512345' })
+ *     address.save(function (err) {
+ *       console.error(err) // validator error
+ *       address.postalCode = '95125';
+ *       address.save() // success
+ *     })
+ *
+ *     // custom error messages
+ *     // We can also use the special {MAXLENGTH} token which will be replaced with the maximum allowed length
+ *     const maxlength = [9, 'The value of path `{PATH}` (`{VALUE}`) exceeds the maximum allowed length ({MAXLENGTH}).'];
+ *     const schema = new Schema({ postalCode: { type: String, maxlength: maxlength })
+ *     const Address = mongoose.model('Address', schema);
+ *     const address = new Address({ postalCode: '9512512345' });
+ *     address.validate(function (err) {
+ *       console.log(String(err)) // ValidationError: The value of path `postalCode` (`9512512345`) exceeds the maximum allowed length (9).
+ *     })
+ *
+ * @param {Number} value maximum string length
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaString.prototype.maxlength = function(value, message) {
+  if (this.maxlengthValidator) {
+    this.validators = this.validators.filter(function(v) {
+      return v.validator !== this.maxlengthValidator;
+    }, this);
+  }
+
+  if (value !== null && value !== undefined) {
+    let msg = message || MongooseError.messages.String.maxlength;
+    msg = msg.replace(/{MAXLENGTH}/, value);
+    this.validators.push({
+      validator: this.maxlengthValidator = function(v) {
+        return v === null || v.length <= value;
+      },
+      message: msg,
+      type: 'maxlength',
+      maxlength: value
+    });
+  }
+
+  return this;
+};
+
+SchemaString.prototype.maxLength = SchemaString.prototype.maxlength;
+
+/**
+ * Sets a regexp validator.
+ *
+ * Any value that does not pass `regExp`.test(val) will fail validation.
+ *
+ * #### Example:
+ *
+ *     const s = new Schema({ name: { type: String, match: /^a/ }})
+ *     const M = db.model('M', s)
+ *     const m = new M({ name: 'I am invalid' })
+ *     m.validate(function (err) {
+ *       console.error(String(err)) // "ValidationError: Path `name` is invalid (I am invalid)."
+ *       m.name = 'apples'
+ *       m.validate(function (err) {
+ *         assert.ok(err) // success
+ *       })
+ *     })
+ *
+ *     // using a custom error message
+ *     const match = [ /\.html$/, "That file doesn't end in .html ({VALUE})" ];
+ *     const s = new Schema({ file: { type: String, match: match }})
+ *     const M = db.model('M', s);
+ *     const m = new M({ file: 'invalid' });
+ *     m.validate(function (err) {
+ *       console.log(String(err)) // "ValidationError: That file doesn't end in .html (invalid)"
+ *     })
+ *
+ * Empty strings, `undefined`, and `null` values always pass the match validator. If you require these values, enable the `required` validator also.
+ *
+ *     const s = new Schema({ name: { type: String, match: /^a/, required: true }})
+ *
+ * @param {RegExp} regExp regular expression to test against
+ * @param {String} [message] optional custom error message
+ * @return {SchemaType} this
+ * @see Customized Error Messages #error_messages_MongooseError-messages
+ * @api public
+ */
+
+SchemaString.prototype.match = function match(regExp, message) {
+  // yes, we allow multiple match validators
+
+  const msg = message || MongooseError.messages.String.match;
+
+  const matchValidator = function(v) {
+    if (!regExp) {
+      return false;
+    }
+
+    // In case RegExp happens to have `/g` flag set, we need to reset the
+    // `lastIndex`, otherwise `match` will intermittently fail.
+    regExp.lastIndex = 0;
+
+    const ret = ((v != null && v !== '')
+      ? regExp.test(v)
+      : true);
+    return ret;
+  };
+
+  this.validators.push({
+    validator: matchValidator,
+    message: msg,
+    type: 'regexp',
+    regexp: regExp
+  });
+  return this;
+};
+
+/**
+ * Check if the given value satisfies the `required` validator. The value is
+ * considered valid if it is a string (that is, not `null` or `undefined`) and
+ * has positive length. The `required` validator **will** fail for empty
+ * strings.
+ *
+ * @param {Any} value
+ * @param {Document} doc
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaString.prototype.checkRequired = function checkRequired(value, doc) {
+  if (typeof value === 'object' && SchemaType._isRef(this, value, doc, true)) {
+    return value != null;
+  }
+
+  // `require('util').inherits()` does **not** copy static properties, and
+  // plugins like mongoose-float use `inherits()` for pre-ES6.
+  const _checkRequired = typeof this.constructor.checkRequired === 'function' ?
+    this.constructor.checkRequired() :
+    SchemaString.checkRequired();
+
+  return _checkRequired(value);
+};
+
+/**
+ * Casts to String
+ *
+ * @api private
+ */
+
+SchemaString.prototype.cast = function(value, doc, init) {
+  if (typeof value !== 'string' && SchemaType._isRef(this, value, doc, init)) {
+    return this._castRef(value, doc, init);
+  }
+
+  let castString;
+  if (typeof this._castFunction === 'function') {
+    castString = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castString = this.constructor.cast();
+  } else {
+    castString = SchemaString.cast();
+  }
+
+  try {
+    return castString(value);
+  } catch (error) {
+    throw new CastError('string', value, this.path, null, this);
+  }
+};
+
+/*!
+ * ignore
+ */
+
+function handleSingle(val, context) {
+  return this.castForQuery(null, val, context);
+}
+
+/*!
+ * ignore
+ */
+
+function handleArray(val, context) {
+  const _this = this;
+  if (!Array.isArray(val)) {
+    return [this.castForQuery(null, val, context)];
+  }
+  return val.map(function(m) {
+    return _this.castForQuery(null, m, context);
+  });
+}
+
+/*!
+ * ignore
+ */
+
+function handleSingleNoSetters(val) {
+  if (val == null) {
+    return this._castNullish(val);
+  }
+
+  return this.cast(val, this);
+}
+
+const $conditionalHandlers = utils.options(SchemaType.prototype.$conditionalHandlers, {
+  $all: handleArray,
+  $gt: handleSingle,
+  $gte: handleSingle,
+  $lt: handleSingle,
+  $lte: handleSingle,
+  $options: handleSingleNoSetters,
+  $regex: function handle$regex(val) {
+    if (Object.prototype.toString.call(val) === '[object RegExp]') {
+      return val;
+    }
+
+    return handleSingleNoSetters.call(this, val);
+  },
+  $not: handleSingle
+});
+
+Object.defineProperty(SchemaString.prototype, '$conditionalHandlers', {
+  configurable: false,
+  enumerable: false,
+  writable: false,
+  value: Object.freeze($conditionalHandlers)
+});
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} [val]
+ * @api private
+ */
+
+SchemaString.prototype.castForQuery = function($conditional, val, context) {
+  let handler;
+  if ($conditional != null) {
+    handler = this.$conditionalHandlers[$conditional];
+    if (!handler) {
+      throw new Error('Can\'t use ' + $conditional + ' with String.');
+    }
+    return handler.call(this, val, context);
+  }
+
+  if (Object.prototype.toString.call(val) === '[object RegExp]' || isBsonType(val, 'BSONRegExp')) {
+    return val;
+  }
+
+  return this.applySetters(val, context);
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaString;

node_modules/mongoose/lib/schema/symbols.js

@@ -0,0 +1,5 @@
+'use strict';
+
+exports.schemaMixedSymbol = Symbol.for('mongoose:schema_mixed');
+
+exports.builtInMiddleware = Symbol.for('mongoose:built-in-middleware');

node_modules/mongoose/lib/schema/uuid.js

@@ -0,0 +1,332 @@
+/*!
+ * Module dependencies.
+ */
+
+'use strict';
+
+const MongooseBuffer = require('../types/buffer');
+const SchemaType = require('../schematype');
+const CastError = SchemaType.CastError;
+const utils = require('../utils');
+const isBsonType = require('../helpers/isBsonType');
+const handleBitwiseOperator = require('./operators/bitwise');
+
+const UUID_FORMAT = /[0-9a-f]{8}-[0-9a-f]{4}-[0-9][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}/i;
+const Binary = MongooseBuffer.Binary;
+
+/**
+ * Helper function to convert the input hex-string to a buffer
+ * @param {String} hex The hex string to convert
+ * @returns {Buffer} The hex as buffer
+ * @api private
+ */
+
+function hex2buffer(hex) {
+  // use buffer built-in function to convert from hex-string to buffer
+  const buff = hex != null && Buffer.from(hex, 'hex');
+  return buff;
+}
+
+/**
+ * Helper function to convert the buffer input to a string
+ * @param {Buffer} buf The buffer to convert to a hex-string
+ * @returns {String} The buffer as a hex-string
+ * @api private
+ */
+
+function binary2hex(buf) {
+  // use buffer built-in function to convert from buffer to hex-string
+  const hex = buf != null && buf.toString('hex');
+  return hex;
+}
+
+/**
+ * Convert a String to Binary
+ * @param {String} uuidStr The value to process
+ * @returns {MongooseBuffer} The binary to store
+ * @api private
+ */
+
+function stringToBinary(uuidStr) {
+  // Protect against undefined & throwing err
+  if (typeof uuidStr !== 'string') uuidStr = '';
+  const hex = uuidStr.replace(/[{}-]/g, ''); // remove extra characters
+  const bytes = hex2buffer(hex);
+  const buff = new MongooseBuffer(bytes);
+  buff._subtype = 4;
+
+  return buff;
+}
+
+/**
+ * Convert binary to a uuid string
+ * @param {Buffer|Binary|String} uuidBin The value to process
+ * @returns {String} The completed uuid-string
+ * @api private
+ */
+function binaryToString(uuidBin) {
+  // i(hasezoey) dont quite know why, but "uuidBin" may sometimes also be the already processed string
+  let hex;
+  if (typeof uuidBin !== 'string' && uuidBin != null) {
+    hex = binary2hex(uuidBin);
+    const uuidStr = hex.substring(0, 8) + '-' + hex.substring(8, 8 + 4) + '-' + hex.substring(12, 12 + 4) + '-' + hex.substring(16, 16 + 4) + '-' + hex.substring(20, 20 + 12);
+    return uuidStr;
+  }
+  return uuidBin;
+}
+
+/**
+ * UUIDv1 SchemaType constructor.
+ *
+ * @param {String} key
+ * @param {Object} options
+ * @inherits SchemaType
+ * @api public
+ */
+
+function SchemaUUID(key, options) {
+  SchemaType.call(this, key, options, 'UUID');
+  this.getters.push(binaryToString);
+}
+
+/**
+ * This schema type's name, to defend against minifiers that mangle
+ * function names.
+ *
+ * @api public
+ */
+SchemaUUID.schemaName = 'UUID';
+
+SchemaUUID.defaultOptions = {};
+
+/*!
+ * Inherits from SchemaType.
+ */
+SchemaUUID.prototype = Object.create(SchemaType.prototype);
+SchemaUUID.prototype.constructor = SchemaUUID;
+
+/*!
+ * ignore
+ */
+
+SchemaUUID._cast = function(value) {
+  if (value === null) {
+    return value;
+  }
+
+  function newBuffer(initbuff) {
+    const buff = new MongooseBuffer(initbuff);
+    buff._subtype = 4;
+    return buff;
+  }
+
+  if (typeof value === 'string') {
+    if (UUID_FORMAT.test(value)) {
+      return stringToBinary(value);
+    } else {
+      throw new CastError(SchemaUUID.schemaName, value, this.path);
+    }
+  }
+
+  if (Buffer.isBuffer(value)) {
+    return newBuffer(value);
+  }
+
+  if (value instanceof Binary) {
+    return newBuffer(value.value(true));
+  }
+
+  // Re: gh-647 and gh-3030, we're ok with casting using `toString()`
+  // **unless** its the default Object.toString, because "[object Object]"
+  // doesn't really qualify as useful data
+  if (value.toString && value.toString !== Object.prototype.toString) {
+    if (UUID_FORMAT.test(value.toString())) {
+      return stringToBinary(value.toString());
+    }
+  }
+
+  throw new CastError(SchemaUUID.schemaName, value, this.path);
+};
+
+/**
+ * Sets a default option for all UUID instances.
+ *
+ * #### Example:
+ *
+ *     // Make all UUIDs have `required` of true by default.
+ *     mongoose.Schema.UUID.set('required', true);
+ *
+ *     const User = mongoose.model('User', new Schema({ test: mongoose.UUID }));
+ *     new User({ }).validateSync().errors.test.message; // Path `test` is required.
+ *
+ * @param {String} option The option you'd like to set the value for
+ * @param {Any} value value for option
+ * @return {undefined}
+ * @function set
+ * @static
+ * @api public
+ */
+
+SchemaUUID.set = SchemaType.set;
+
+/**
+ * Get/set the function used to cast arbitrary values to UUIDs.
+ *
+ * #### Example:
+ *
+ *     // Make Mongoose refuse to cast UUIDs with 0 length
+ *     const original = mongoose.Schema.Types.UUID.cast();
+ *     mongoose.UUID.cast(v => {
+ *       assert.ok(typeof v === "string" && v.length > 0);
+ *       return original(v);
+ *     });
+ *
+ *     // Or disable casting entirely
+ *     mongoose.UUID.cast(false);
+ *
+ * @param {Function} [caster]
+ * @return {Function}
+ * @function get
+ * @static
+ * @api public
+ */
+
+SchemaUUID.cast = function cast(caster) {
+  if (arguments.length === 0) {
+    return this._cast;
+  }
+  if (caster === false) {
+    caster = this._defaultCaster;
+  }
+  this._cast = caster;
+
+  return this._cast;
+};
+
+/*!
+ * ignore
+ */
+
+SchemaUUID._checkRequired = v => v != null;
+
+/**
+ * Override the function the required validator uses to check whether a string
+ * passes the `required` check.
+ *
+ * @param {Function} fn
+ * @return {Function}
+ * @function checkRequired
+ * @static
+ * @api public
+ */
+
+SchemaUUID.checkRequired = SchemaType.checkRequired;
+
+/**
+ * Check if the given value satisfies a required validator.
+ *
+ * @param {Any} value
+ * @return {Boolean}
+ * @api public
+ */
+
+SchemaUUID.prototype.checkRequired = function checkRequired(value) {
+  if (Buffer.isBuffer(value)) {
+    value = binaryToString(value);
+  }
+  return value != null && UUID_FORMAT.test(value);
+};
+
+/**
+ * Casts to UUID
+ *
+ * @param {Object} value
+ * @param {Object} doc
+ * @param {Boolean} init whether this is an initialization cast
+ * @api private
+ */
+
+SchemaUUID.prototype.cast = function(value, doc, init) {
+  if (SchemaType._isRef(this, value, doc, init)) {
+    if (isBsonType(value, 'UUID')) {
+      return value;
+    }
+
+    return this._castRef(value, doc, init);
+  }
+
+  let castFn;
+  if (typeof this._castFunction === 'function') {
+    castFn = this._castFunction;
+  } else if (typeof this.constructor.cast === 'function') {
+    castFn = this.constructor.cast();
+  } else {
+    castFn = SchemaUUID.cast();
+  }
+
+  try {
+    return castFn(value);
+  } catch (error) {
+    throw new CastError(SchemaUUID.schemaName, value, this.path, error, this);
+  }
+};
+
+/*!
+ * ignore
+ */
+
+function handleSingle(val) {
+  return this.cast(val);
+}
+
+/*!
+ * ignore
+ */
+
+function handleArray(val) {
+  return val.map((m) => {
+    return this.cast(m);
+  });
+}
+
+SchemaUUID.prototype.$conditionalHandlers =
+utils.options(SchemaType.prototype.$conditionalHandlers, {
+  $bitsAllClear: handleBitwiseOperator,
+  $bitsAnyClear: handleBitwiseOperator,
+  $bitsAllSet: handleBitwiseOperator,
+  $bitsAnySet: handleBitwiseOperator,
+  $all: handleArray,
+  $gt: handleSingle,
+  $gte: handleSingle,
+  $in: handleArray,
+  $lt: handleSingle,
+  $lte: handleSingle,
+  $ne: handleSingle,
+  $nin: handleArray
+});
+
+/**
+ * Casts contents for queries.
+ *
+ * @param {String} $conditional
+ * @param {any} val
+ * @api private
+ */
+
+SchemaUUID.prototype.castForQuery = function($conditional, val, context) {
+  let handler;
+  if ($conditional != null) {
+    handler = this.$conditionalHandlers[$conditional];
+    if (!handler)
+      throw new Error('Can\'t use ' + $conditional + ' with UUID.');
+    return handler.call(this, val, context);
+  } else {
+    return this.cast(val);
+  }
+};
+
+/*!
+ * Module exports.
+ */
+
+module.exports = SchemaUUID;