some progress

node_modules/mongoose/lib/helpers/query/applyGlobalOption.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const utils = require('../../utils');
+
+function applyGlobalMaxTimeMS(options, model) {
+  applyGlobalOption(options, model, 'maxTimeMS');
+}
+
+function applyGlobalDiskUse(options, model) {
+  applyGlobalOption(options, model, 'allowDiskUse');
+}
+
+module.exports = {
+  applyGlobalMaxTimeMS,
+  applyGlobalDiskUse
+};
+
+
+function applyGlobalOption(options, model, optionName) {
+  if (utils.hasUserDefinedProperty(options, optionName)) {
+    return;
+  }
+
+  if (utils.hasUserDefinedProperty(model.db.options, optionName)) {
+    options[optionName] = model.db.options[optionName];
+  } else if (utils.hasUserDefinedProperty(model.base.options, optionName)) {
+    options[optionName] = model.base.options[optionName];
+  }
+}

node_modules/mongoose/lib/helpers/query/applyQueryMiddleware.js

@@ -0,0 +1,54 @@
+'use strict';
+
+/*!
+ * ignore
+ */
+
+module.exports = applyQueryMiddleware;
+
+const validOps = require('./validOps');
+
+/*!
+ * ignore
+ */
+
+applyQueryMiddleware.middlewareFunctions = validOps.concat([
+  'validate'
+]);
+
+/**
+ * Apply query middleware
+ *
+ * @param {Query} Query constructor
+ * @param {Model} model
+ * @api private
+ */
+
+function applyQueryMiddleware(Query, model) {
+  const queryMiddleware = model.schema.s.hooks.filter(hook => {
+    const contexts = _getContexts(hook);
+    if (hook.name === 'validate') {
+      return !!contexts.query;
+    }
+    if (hook.name === 'deleteOne' || hook.name === 'updateOne') {
+      return !!contexts.query || Object.keys(contexts).length === 0;
+    }
+    if (hook.query != null || hook.document != null) {
+      return !!hook.query;
+    }
+    return true;
+  });
+
+  Query.prototype._queryMiddleware = queryMiddleware;
+}
+
+function _getContexts(hook) {
+  const ret = {};
+  if (hook.hasOwnProperty('query')) {
+    ret.query = hook.query;
+  }
+  if (hook.hasOwnProperty('document')) {
+    ret.document = hook.document;
+  }
+  return ret;
+}

node_modules/mongoose/lib/helpers/query/cast$expr.js

@@ -0,0 +1,282 @@
+'use strict';
+
+const CastError = require('../../error/cast');
+const StrictModeError = require('../../error/strict');
+const castNumber = require('../../cast/number');
+
+const booleanComparison = new Set(['$and', '$or']);
+const comparisonOperator = new Set(['$cmp', '$eq', '$lt', '$lte', '$gt', '$gte']);
+const arithmeticOperatorArray = new Set([
+  // avoid casting '$add' or '$subtract', because expressions can be either number or date,
+  // and we don't have a good way of inferring which arguments should be numbers and which should
+  // be dates.
+  '$multiply',
+  '$divide',
+  '$log',
+  '$mod',
+  '$trunc',
+  '$avg',
+  '$max',
+  '$min',
+  '$stdDevPop',
+  '$stdDevSamp',
+  '$sum'
+]);
+const arithmeticOperatorNumber = new Set([
+  '$abs',
+  '$exp',
+  '$ceil',
+  '$floor',
+  '$ln',
+  '$log10',
+  '$round',
+  '$sqrt',
+  '$sin',
+  '$cos',
+  '$tan',
+  '$asin',
+  '$acos',
+  '$atan',
+  '$atan2',
+  '$asinh',
+  '$acosh',
+  '$atanh',
+  '$sinh',
+  '$cosh',
+  '$tanh',
+  '$degreesToRadians',
+  '$radiansToDegrees'
+]);
+const arrayElementOperators = new Set([
+  '$arrayElemAt',
+  '$first',
+  '$last'
+]);
+const dateOperators = new Set([
+  '$year',
+  '$month',
+  '$week',
+  '$dayOfMonth',
+  '$dayOfYear',
+  '$hour',
+  '$minute',
+  '$second',
+  '$isoDayOfWeek',
+  '$isoWeekYear',
+  '$isoWeek',
+  '$millisecond'
+]);
+const expressionOperator = new Set(['$not']);
+
+module.exports = function cast$expr(val, schema, strictQuery) {
+  if (typeof val !== 'object' || val === null) {
+    throw new Error('`$expr` must be an object');
+  }
+
+  return _castExpression(val, schema, strictQuery);
+};
+
+function _castExpression(val, schema, strictQuery) {
+  // Preserve the value if it represents a path or if it's null
+  if (isPath(val) || val === null) {
+    return val;
+  }
+
+  if (val.$cond != null) {
+    if (Array.isArray(val.$cond)) {
+      val.$cond = val.$cond.map(expr => _castExpression(expr, schema, strictQuery));
+    } else {
+      val.$cond.if = _castExpression(val.$cond.if, schema, strictQuery);
+      val.$cond.then = _castExpression(val.$cond.then, schema, strictQuery);
+      val.$cond.else = _castExpression(val.$cond.else, schema, strictQuery);
+    }
+  } else if (val.$ifNull != null) {
+    val.$ifNull.map(v => _castExpression(v, schema, strictQuery));
+  } else if (val.$switch != null) {
+    val.branches.map(v => _castExpression(v, schema, strictQuery));
+    val.default = _castExpression(val.default, schema, strictQuery);
+  }
+
+  const keys = Object.keys(val);
+  for (const key of keys) {
+    if (booleanComparison.has(key)) {
+      val[key] = val[key].map(v => _castExpression(v, schema, strictQuery));
+    } else if (comparisonOperator.has(key)) {
+      val[key] = castComparison(val[key], schema, strictQuery);
+    } else if (arithmeticOperatorArray.has(key)) {
+      val[key] = castArithmetic(val[key], schema, strictQuery);
+    } else if (arithmeticOperatorNumber.has(key)) {
+      val[key] = castNumberOperator(val[key], schema, strictQuery);
+    } else if (expressionOperator.has(key)) {
+      val[key] = _castExpression(val[key], schema, strictQuery);
+    }
+  }
+
+  if (val.$in) {
+    val.$in = castIn(val.$in, schema, strictQuery);
+  }
+  if (val.$size) {
+    val.$size = castNumberOperator(val.$size, schema, strictQuery);
+  }
+
+  _omitUndefined(val);
+
+  return val;
+}
+
+function _omitUndefined(val) {
+  const keys = Object.keys(val);
+  for (let i = 0, len = keys.length; i < len; ++i) {
+    (val[keys[i]] === void 0) && delete val[keys[i]];
+  }
+}
+
+// { $op: <number> }
+function castNumberOperator(val) {
+  if (!isLiteral(val)) {
+    return val;
+  }
+
+  try {
+    return castNumber(val);
+  } catch (err) {
+    throw new CastError('Number', val);
+  }
+}
+
+function castIn(val, schema, strictQuery) {
+  const path = val[1];
+  if (!isPath(path)) {
+    return val;
+  }
+  const search = val[0];
+
+  const schematype = schema.path(path.slice(1));
+  if (schematype === null) {
+    if (strictQuery === false) {
+      return val;
+    } else if (strictQuery === 'throw') {
+      throw new StrictModeError('$in');
+    }
+
+    return void 0;
+  }
+
+  if (!schematype.$isMongooseArray) {
+    throw new Error('Path must be an array for $in');
+  }
+
+  return [
+    schematype.$isMongooseDocumentArray ? schematype.$embeddedSchemaType.cast(search) : schematype.caster.cast(search),
+    path
+  ];
+}
+
+// { $op: [<number>, <number>] }
+function castArithmetic(val) {
+  if (!Array.isArray(val)) {
+    if (!isLiteral(val)) {
+      return val;
+    }
+    try {
+      return castNumber(val);
+    } catch (err) {
+      throw new CastError('Number', val);
+    }
+  }
+
+  return val.map(v => {
+    if (!isLiteral(v)) {
+      return v;
+    }
+    try {
+      return castNumber(v);
+    } catch (err) {
+      throw new CastError('Number', v);
+    }
+  });
+}
+
+// { $op: [expression, expression] }
+function castComparison(val, schema, strictQuery) {
+  if (!Array.isArray(val) || val.length !== 2) {
+    throw new Error('Comparison operator must be an array of length 2');
+  }
+
+  val[0] = _castExpression(val[0], schema, strictQuery);
+  const lhs = val[0];
+
+  if (isLiteral(val[1])) {
+    let path = null;
+    let schematype = null;
+    let caster = null;
+    if (isPath(lhs)) {
+      path = lhs.slice(1);
+      schematype = schema.path(path);
+    } else if (typeof lhs === 'object' && lhs != null) {
+      for (const key of Object.keys(lhs)) {
+        if (dateOperators.has(key) && isPath(lhs[key])) {
+          path = lhs[key].slice(1) + '.' + key;
+          caster = castNumber;
+        } else if (arrayElementOperators.has(key) && isPath(lhs[key])) {
+          path = lhs[key].slice(1) + '.' + key;
+          schematype = schema.path(lhs[key].slice(1));
+          if (schematype != null) {
+            if (schematype.$isMongooseDocumentArray) {
+              schematype = schematype.$embeddedSchemaType;
+            } else if (schematype.$isMongooseArray) {
+              schematype = schematype.caster;
+            }
+          }
+        }
+      }
+    }
+
+    const is$literal = typeof val[1] === 'object' && val[1] != null && val[1].$literal != null;
+    if (schematype != null) {
+      if (is$literal) {
+        val[1] = { $literal: schematype.cast(val[1].$literal) };
+      } else {
+        val[1] = schematype.cast(val[1]);
+      }
+    } else if (caster != null) {
+      if (is$literal) {
+        try {
+          val[1] = { $literal: caster(val[1].$literal) };
+        } catch (err) {
+          throw new CastError(caster.name.replace(/^cast/, ''), val[1], path + '.$literal');
+        }
+      } else {
+        try {
+          val[1] = caster(val[1]);
+        } catch (err) {
+          throw new CastError(caster.name.replace(/^cast/, ''), val[1], path);
+        }
+      }
+    } else if (path != null && strictQuery === true) {
+      return void 0;
+    } else if (path != null && strictQuery === 'throw') {
+      throw new StrictModeError(path);
+    }
+  } else {
+    val[1] = _castExpression(val[1]);
+  }
+
+  return val;
+}
+
+function isPath(val) {
+  return typeof val === 'string' && val[0] === '$';
+}
+
+function isLiteral(val) {
+  if (typeof val === 'string' && val[0] === '$') {
+    return false;
+  }
+  if (typeof val === 'object' && val !== null && Object.keys(val).find(key => key[0] === '$')) {
+    // The `$literal` expression can make an object a literal
+    // https://www.mongodb.com/docs/manual/reference/operator/aggregation/literal/#mongodb-expression-exp.-literal
+    return val.$literal != null;
+  }
+  return true;
+}

node_modules/mongoose/lib/helpers/query/castFilterPath.js

@@ -0,0 +1,55 @@
+'use strict';
+
+const isOperator = require('./isOperator');
+
+module.exports = function castFilterPath(query, schematype, val) {
+  const ctx = query;
+  const any$conditionals = Object.keys(val).some(isOperator);
+
+  if (!any$conditionals) {
+    return schematype.castForQuery(
+      null,
+      val,
+      ctx
+    );
+  }
+
+  const ks = Object.keys(val);
+
+  let k = ks.length;
+
+  while (k--) {
+    const $cond = ks[k];
+    const nested = val[$cond];
+
+    if ($cond === '$not') {
+      if (nested && schematype && !schematype.caster) {
+        const _keys = Object.keys(nested);
+        if (_keys.length && isOperator(_keys[0])) {
+          for (const key of Object.keys(nested)) {
+            nested[key] = schematype.castForQuery(
+              key,
+              nested[key],
+              ctx
+            );
+          }
+        } else {
+          val[$cond] = schematype.castForQuery(
+            $cond,
+            nested,
+            ctx
+          );
+        }
+        continue;
+      }
+    } else {
+      val[$cond] = schematype.castForQuery(
+        $cond,
+        nested,
+        ctx
+      );
+    }
+  }
+
+  return val;
+};

node_modules/mongoose/lib/helpers/query/castUpdate.js

@@ -0,0 +1,565 @@
+'use strict';
+
+const CastError = require('../../error/cast');
+const MongooseError = require('../../error/mongooseError');
+const StrictModeError = require('../../error/strict');
+const ValidationError = require('../../error/validation');
+const castNumber = require('../../cast/number');
+const cast = require('../../cast');
+const getConstructorName = require('../getConstructorName');
+const getEmbeddedDiscriminatorPath = require('./getEmbeddedDiscriminatorPath');
+const handleImmutable = require('./handleImmutable');
+const moveImmutableProperties = require('../update/moveImmutableProperties');
+const schemaMixedSymbol = require('../../schema/symbols').schemaMixedSymbol;
+const setDottedPath = require('../path/setDottedPath');
+const utils = require('../../utils');
+
+/**
+ * Casts an update op based on the given schema
+ *
+ * @param {Schema} schema
+ * @param {Object} obj
+ * @param {Object} [options]
+ * @param {Boolean} [options.overwrite] defaults to false
+ * @param {Boolean|String} [options.strict] defaults to true
+ * @param {Query} context passed to setters
+ * @return {Boolean} true iff the update is non-empty
+ * @api private
+ */
+module.exports = function castUpdate(schema, obj, options, context, filter) {
+  if (obj == null) {
+    return undefined;
+  }
+  options = options || {};
+  // Update pipeline
+  if (Array.isArray(obj)) {
+    const len = obj.length;
+    for (let i = 0; i < len; ++i) {
+      const ops = Object.keys(obj[i]);
+      for (const op of ops) {
+        obj[i][op] = castPipelineOperator(op, obj[i][op]);
+      }
+    }
+    return obj;
+  }
+
+  if (options.upsert && !options.overwrite) {
+    moveImmutableProperties(schema, obj, context);
+  }
+
+  const ops = Object.keys(obj);
+  let i = ops.length;
+  const ret = {};
+  let val;
+  let hasDollarKey = false;
+  const overwrite = options.overwrite;
+
+  filter = filter || {};
+  while (i--) {
+    const op = ops[i];
+    // if overwrite is set, don't do any of the special $set stuff
+    if (op[0] !== '$' && !overwrite) {
+      // fix up $set sugar
+      if (!ret.$set) {
+        if (obj.$set) {
+          ret.$set = obj.$set;
+        } else {
+          ret.$set = {};
+        }
+      }
+      ret.$set[op] = obj[op];
+      ops.splice(i, 1);
+      if (!~ops.indexOf('$set')) ops.push('$set');
+    } else if (op === '$set') {
+      if (!ret.$set) {
+        ret[op] = obj[op];
+      }
+    } else {
+      ret[op] = obj[op];
+    }
+  }
+  // cast each value
+  i = ops.length;
+  while (i--) {
+    const op = ops[i];
+    val = ret[op];
+    hasDollarKey = hasDollarKey || op.startsWith('$');
+
+    if (val &&
+        typeof val === 'object' &&
+        !Buffer.isBuffer(val) &&
+        (!overwrite || hasDollarKey)) {
+      walkUpdatePath(schema, val, op, options, context, filter);
+    } else if (overwrite && ret && typeof ret === 'object') {
+      walkUpdatePath(schema, ret, '$set', options, context, filter);
+    } else {
+      const msg = 'Invalid atomic update value for ' + op + '. '
+          + 'Expected an object, received ' + typeof val;
+      throw new Error(msg);
+    }
+
+    if (op.startsWith('$') && utils.isEmptyObject(val)) {
+      delete ret[op];
+    }
+  }
+
+  if (Object.keys(ret).length === 0 &&
+      options.upsert &&
+      Object.keys(filter).length > 0) {
+    // Trick the driver into allowing empty upserts to work around
+    // https://github.com/mongodb/node-mongodb-native/pull/2490
+    return { $setOnInsert: filter };
+  }
+  return ret;
+};
+
+/*!
+ * ignore
+ */
+
+function castPipelineOperator(op, val) {
+  if (op === '$unset') {
+    if (typeof val !== 'string' && (!Array.isArray(val) || val.find(v => typeof v !== 'string'))) {
+      throw new MongooseError('Invalid $unset in pipeline, must be ' +
+        ' a string or an array of strings');
+    }
+    return val;
+  }
+  if (op === '$project') {
+    if (val == null || typeof val !== 'object') {
+      throw new MongooseError('Invalid $project in pipeline, must be an object');
+    }
+    return val;
+  }
+  if (op === '$addFields' || op === '$set') {
+    if (val == null || typeof val !== 'object') {
+      throw new MongooseError('Invalid ' + op + ' in pipeline, must be an object');
+    }
+    return val;
+  } else if (op === '$replaceRoot' || op === '$replaceWith') {
+    if (val == null || typeof val !== 'object') {
+      throw new MongooseError('Invalid ' + op + ' in pipeline, must be an object');
+    }
+    return val;
+  }
+
+  throw new MongooseError('Invalid update pipeline operator: "' + op + '"');
+}
+
+/**
+ * Walk each path of obj and cast its values
+ * according to its schema.
+ *
+ * @param {Schema} schema
+ * @param {Object} obj part of a query
+ * @param {String} op the atomic operator ($pull, $set, etc)
+ * @param {Object} [options]
+ * @param {Boolean|String} [options.strict]
+ * @param {Query} context
+ * @param {Object} filter
+ * @param {String} pref path prefix (internal only)
+ * @return {Bool} true if this path has keys to update
+ * @api private
+ */
+
+function walkUpdatePath(schema, obj, op, options, context, filter, pref) {
+  const strict = options.strict;
+  const prefix = pref ? pref + '.' : '';
+  const keys = Object.keys(obj);
+  let i = keys.length;
+  let hasKeys = false;
+  let schematype;
+  let key;
+  let val;
+
+  let aggregatedError = null;
+
+  const strictMode = strict != null ? strict : schema.options.strict;
+
+  while (i--) {
+    key = keys[i];
+    val = obj[key];
+
+    // `$pull` is special because we need to cast the RHS as a query, not as
+    // an update.
+    if (op === '$pull') {
+      schematype = schema._getSchema(prefix + key);
+      if (schematype != null && schematype.schema != null) {
+        obj[key] = cast(schematype.schema, obj[key], options, context);
+        hasKeys = true;
+        continue;
+      }
+    }
+
+    const discriminatorKey = (prefix ? prefix + key : key);
+    if (
+      schema.discriminatorMapping != null &&
+      discriminatorKey === schema.options.discriminatorKey &&
+      schema.discriminatorMapping.value !== obj[key] &&
+      !options.overwriteDiscriminatorKey
+    ) {
+      if (strictMode === 'throw') {
+        const err = new Error('Can\'t modify discriminator key "' + discriminatorKey + '" on discriminator model');
+        aggregatedError = _appendError(err, context, discriminatorKey, aggregatedError);
+        continue;
+      } else if (strictMode) {
+        delete obj[key];
+        continue;
+      }
+    }
+
+    if (getConstructorName(val) === 'Object') {
+      // watch for embedded doc schemas
+      schematype = schema._getSchema(prefix + key);
+
+      if (schematype == null) {
+        const _res = getEmbeddedDiscriminatorPath(schema, obj, filter, prefix + key, options);
+        if (_res.schematype != null) {
+          schematype = _res.schematype;
+        }
+      }
+
+      if (op !== '$setOnInsert' &&
+          !options.overwrite &&
+          handleImmutable(schematype, strict, obj, key, prefix + key, context)) {
+        continue;
+      }
+
+      if (schematype && schematype.caster && op in castOps) {
+        // embedded doc schema
+        if ('$each' in val) {
+          hasKeys = true;
+          try {
+            obj[key] = {
+              $each: castUpdateVal(schematype, val.$each, op, key, context, prefix + key)
+            };
+          } catch (error) {
+            aggregatedError = _appendError(error, context, key, aggregatedError);
+          }
+
+          if (val.$slice != null) {
+            obj[key].$slice = val.$slice | 0;
+          }
+
+          if (val.$sort) {
+            obj[key].$sort = val.$sort;
+          }
+
+          if (val.$position != null) {
+            obj[key].$position = castNumber(val.$position);
+          }
+        } else {
+          if (schematype != null && schematype.$isSingleNested) {
+            const _strict = strict == null ? schematype.schema.options.strict : strict;
+            try {
+              obj[key] = schematype.castForQuery(null, val, context, { strict: _strict });
+            } catch (error) {
+              aggregatedError = _appendError(error, context, key, aggregatedError);
+            }
+          } else {
+            try {
+              obj[key] = castUpdateVal(schematype, val, op, key, context, prefix + key);
+            } catch (error) {
+              aggregatedError = _appendError(error, context, key, aggregatedError);
+            }
+          }
+
+          if (obj[key] === void 0) {
+            delete obj[key];
+            continue;
+          }
+
+          hasKeys = true;
+        }
+      } else if ((op === '$currentDate') || (op in castOps && schematype)) {
+        // $currentDate can take an object
+        try {
+          obj[key] = castUpdateVal(schematype, val, op, key, context, prefix + key);
+        } catch (error) {
+          aggregatedError = _appendError(error, context, key, aggregatedError);
+        }
+
+        if (obj[key] === void 0) {
+          delete obj[key];
+          continue;
+        }
+
+        hasKeys = true;
+      } else {
+        const pathToCheck = (prefix + key);
+        const v = schema._getPathType(pathToCheck);
+        let _strict = strict;
+        if (v && v.schema && _strict == null) {
+          _strict = v.schema.options.strict;
+        }
+
+        if (v.pathType === 'undefined') {
+          if (_strict === 'throw') {
+            throw new StrictModeError(pathToCheck);
+          } else if (_strict) {
+            delete obj[key];
+            continue;
+          }
+        }
+
+        // gh-2314
+        // we should be able to set a schema-less field
+        // to an empty object literal
+        hasKeys |= walkUpdatePath(schema, val, op, options, context, filter, prefix + key) ||
+          (utils.isObject(val) && Object.keys(val).length === 0);
+      }
+    } else {
+      const checkPath = (key === '$each' || key === '$or' || key === '$and' || key === '$in') ?
+        pref : prefix + key;
+      schematype = schema._getSchema(checkPath);
+
+      // You can use `$setOnInsert` with immutable keys
+      if (op !== '$setOnInsert' &&
+          !options.overwrite &&
+          handleImmutable(schematype, strict, obj, key, prefix + key, context)) {
+        continue;
+      }
+
+      let pathDetails = schema._getPathType(checkPath);
+
+      // If no schema type, check for embedded discriminators because the
+      // filter or update may imply an embedded discriminator type. See #8378
+      if (schematype == null) {
+        const _res = getEmbeddedDiscriminatorPath(schema, obj, filter, checkPath, options);
+        if (_res.schematype != null) {
+          schematype = _res.schematype;
+          pathDetails = _res.type;
+        }
+      }
+
+      let isStrict = strict;
+      if (pathDetails && pathDetails.schema && strict == null) {
+        isStrict = pathDetails.schema.options.strict;
+      }
+
+      const skip = isStrict &&
+        !schematype &&
+        !/real|nested/.test(pathDetails.pathType);
+
+      if (skip) {
+        // Even if strict is `throw`, avoid throwing an error because of
+        // virtuals because of #6731
+        if (isStrict === 'throw' && schema.virtuals[checkPath] == null) {
+          throw new StrictModeError(prefix + key);
+        } else {
+          delete obj[key];
+        }
+      } else {
+        // gh-1845 temporary fix: ignore $rename. See gh-3027 for tracking
+        // improving this.
+        if (op === '$rename') {
+          hasKeys = true;
+          continue;
+        }
+
+        try {
+          if (prefix.length === 0 || key.indexOf('.') === -1) {
+            obj[key] = castUpdateVal(schematype, val, op, key, context, prefix + key);
+          } else {
+            // Setting a nested dotted path that's in the schema. We don't allow paths with '.' in
+            // a schema, so replace the dotted path with a nested object to avoid ending up with
+            // dotted properties in the updated object. See (gh-10200)
+            setDottedPath(obj, key, castUpdateVal(schematype, val, op, key, context, prefix + key));
+            delete obj[key];
+          }
+        } catch (error) {
+          aggregatedError = _appendError(error, context, key, aggregatedError);
+        }
+
+        if (Array.isArray(obj[key]) && (op === '$addToSet' || op === '$push') && key !== '$each') {
+          if (schematype &&
+              schematype.caster &&
+              !schematype.caster.$isMongooseArray &&
+              !schematype.caster[schemaMixedSymbol]) {
+            obj[key] = { $each: obj[key] };
+          }
+        }
+
+        if (obj[key] === void 0) {
+          delete obj[key];
+          continue;
+        }
+
+        hasKeys = true;
+      }
+    }
+  }
+
+  if (aggregatedError != null) {
+    throw aggregatedError;
+  }
+
+  return hasKeys;
+}
+
+/*!
+ * ignore
+ */
+
+function _appendError(error, query, key, aggregatedError) {
+  if (typeof query !== 'object' || !query.options.multipleCastError) {
+    throw error;
+  }
+  aggregatedError = aggregatedError || new ValidationError();
+  aggregatedError.addError(key, error);
+  return aggregatedError;
+}
+
+/**
+ * These operators should be cast to numbers instead
+ * of their path schema type.
+ * @api private
+ */
+
+const numberOps = {
+  $pop: 1,
+  $inc: 1
+};
+
+/**
+ * These ops require no casting because the RHS doesn't do anything.
+ * @api private
+ */
+
+const noCastOps = {
+  $unset: 1
+};
+
+/**
+ * These operators require casting docs
+ * to real Documents for Update operations.
+ * @api private
+ */
+
+const castOps = {
+  $push: 1,
+  $addToSet: 1,
+  $set: 1,
+  $setOnInsert: 1
+};
+
+/*!
+ * ignore
+ */
+
+const overwriteOps = {
+  $set: 1,
+  $setOnInsert: 1
+};
+
+/**
+ * Casts `val` according to `schema` and atomic `op`.
+ *
+ * @param {SchemaType} schema
+ * @param {Object} val
+ * @param {String} op the atomic operator ($pull, $set, etc)
+ * @param {String} $conditional
+ * @param {Query} context
+ * @param {String} path
+ * @api private
+ */
+
+function castUpdateVal(schema, val, op, $conditional, context, path) {
+  if (!schema) {
+    // non-existing schema path
+    if (op in numberOps) {
+      try {
+        return castNumber(val);
+      } catch (err) {
+        throw new CastError('number', val, path);
+      }
+    }
+    return val;
+  }
+
+  // console.log('CastUpdateVal', path, op, val, schema);
+
+  const cond = schema.caster && op in castOps &&
+      (utils.isObject(val) || Array.isArray(val));
+  if (cond && !overwriteOps[op]) {
+    // Cast values for ops that add data to MongoDB.
+    // Ensures embedded documents get ObjectIds etc.
+    let schemaArrayDepth = 0;
+    let cur = schema;
+    while (cur.$isMongooseArray) {
+      ++schemaArrayDepth;
+      cur = cur.caster;
+    }
+    let arrayDepth = 0;
+    let _val = val;
+    while (Array.isArray(_val)) {
+      ++arrayDepth;
+      _val = _val[0];
+    }
+
+    const additionalNesting = schemaArrayDepth - arrayDepth;
+    while (arrayDepth < schemaArrayDepth) {
+      val = [val];
+      ++arrayDepth;
+    }
+
+    let tmp = schema.applySetters(Array.isArray(val) ? val : [val], context);
+
+    for (let i = 0; i < additionalNesting; ++i) {
+      tmp = tmp[0];
+    }
+    return tmp;
+  }
+
+  if (op in noCastOps) {
+    return val;
+  }
+  if (op in numberOps) {
+    // Null and undefined not allowed for $pop, $inc
+    if (val == null) {
+      throw new CastError('number', val, schema.path);
+    }
+    if (op === '$inc') {
+      // Support `$inc` with long, int32, etc. (gh-4283)
+      return schema.castForQuery(
+        null,
+        val,
+        context
+      );
+    }
+    try {
+      return castNumber(val);
+    } catch (error) {
+      throw new CastError('number', val, schema.path);
+    }
+  }
+  if (op === '$currentDate') {
+    if (typeof val === 'object') {
+      return { $type: val.$type };
+    }
+    return Boolean(val);
+  }
+
+  if (/^\$/.test($conditional)) {
+    return schema.castForQuery(
+      $conditional,
+      val,
+      context
+    );
+  }
+
+  if (overwriteOps[op]) {
+    const skipQueryCastForUpdate = val != null && schema.$isMongooseArray && schema.$fullPath != null && !schema.$fullPath.match(/\d+$/);
+    const applySetters = schema[schemaMixedSymbol] != null;
+    if (skipQueryCastForUpdate || applySetters) {
+      return schema.applySetters(val, context);
+    }
+    return schema.castForQuery(
+      null,
+      val,
+      context
+    );
+  }
+
+  return schema.castForQuery(null, val, context);
+}

node_modules/mongoose/lib/helpers/query/completeMany.js

@@ -0,0 +1,36 @@
+'use strict';
+
+const helpers = require('../../queryhelpers');
+
+module.exports = completeMany;
+
+/**
+ * Given a model and an array of docs, hydrates all the docs to be instances
+ * of the model. Used to initialize docs returned from the db from `find()`
+ *
+ * @param {Model} model
+ * @param {Array} docs
+ * @param {Object} fields the projection used, including `select` from schemas
+ * @param {Object} userProvidedFields the user-specified projection
+ * @param {Object} [opts]
+ * @param {Array} [opts.populated]
+ * @param {ClientSession} [opts.session]
+ * @param {Function} callback
+ * @api private
+ */
+
+async function completeMany(model, docs, fields, userProvidedFields, opts) {
+  return Promise.all(docs.map(doc => new Promise((resolve, reject) => {
+    const rawDoc = doc;
+    doc = helpers.createModel(model, doc, fields, userProvidedFields);
+    if (opts.session != null) {
+      doc.$session(opts.session);
+    }
+    doc.$init(rawDoc, opts, (err) => {
+      if (err != null) {
+        return reject(err);
+      }
+      resolve(doc);
+    });
+  })));
+}

node_modules/mongoose/lib/helpers/query/getEmbeddedDiscriminatorPath.js

@@ -0,0 +1,90 @@
+'use strict';
+
+const cleanPositionalOperators = require('../schema/cleanPositionalOperators');
+const get = require('../get');
+const getDiscriminatorByValue = require('../discriminator/getDiscriminatorByValue');
+const updatedPathsByArrayFilter = require('../update/updatedPathsByArrayFilter');
+
+/**
+ * Like `schema.path()`, except with a document, because impossible to
+ * determine path type without knowing the embedded discriminator key.
+ * @param {Schema} schema
+ * @param {Object} [update]
+ * @param {Object} [filter]
+ * @param {String} path
+ * @param {Object} [options]
+ * @api private
+ */
+
+module.exports = function getEmbeddedDiscriminatorPath(schema, update, filter, path, options) {
+  const parts = path.split('.');
+  let schematype = null;
+  let type = 'adhocOrUndefined';
+
+  filter = filter || {};
+  update = update || {};
+  const arrayFilters = options != null && Array.isArray(options.arrayFilters) ?
+    options.arrayFilters : [];
+  const updatedPathsByFilter = updatedPathsByArrayFilter(update);
+
+  for (let i = 0; i < parts.length; ++i) {
+    const subpath = cleanPositionalOperators(parts.slice(0, i + 1).join('.'));
+    schematype = schema.path(subpath);
+    if (schematype == null) {
+      continue;
+    }
+
+    type = schema.pathType(subpath);
+    if ((schematype.$isSingleNested || schematype.$isMongooseDocumentArrayElement) &&
+        schematype.schema.discriminators != null) {
+      const key = get(schematype, 'schema.options.discriminatorKey');
+      const discriminatorValuePath = subpath + '.' + key;
+      const discriminatorFilterPath =
+        discriminatorValuePath.replace(/\.\d+\./, '.');
+      let discriminatorKey = null;
+
+      if (discriminatorValuePath in filter) {
+        discriminatorKey = filter[discriminatorValuePath];
+      }
+      if (discriminatorFilterPath in filter) {
+        discriminatorKey = filter[discriminatorFilterPath];
+      }
+
+      const wrapperPath = subpath.replace(/\.\d+$/, '');
+      if (schematype.$isMongooseDocumentArrayElement &&
+          get(filter[wrapperPath], '$elemMatch.' + key) != null) {
+        discriminatorKey = filter[wrapperPath].$elemMatch[key];
+      }
+
+      if (discriminatorValuePath in update) {
+        discriminatorKey = update[discriminatorValuePath];
+      }
+
+      for (const filterKey of Object.keys(updatedPathsByFilter)) {
+        const schemaKey = updatedPathsByFilter[filterKey] + '.' + key;
+        const arrayFilterKey = filterKey + '.' + key;
+        if (schemaKey === discriminatorFilterPath) {
+          const filter = arrayFilters.find(filter => filter.hasOwnProperty(arrayFilterKey));
+          if (filter != null) {
+            discriminatorKey = filter[arrayFilterKey];
+          }
+        }
+      }
+
+      if (discriminatorKey == null) {
+        continue;
+      }
+
+      const discriminatorSchema = getDiscriminatorByValue(schematype.caster.discriminators, discriminatorKey).schema;
+
+      const rest = parts.slice(i + 1).join('.');
+      schematype = discriminatorSchema.path(rest);
+      if (schematype != null) {
+        type = discriminatorSchema._getPathType(rest);
+        break;
+      }
+    }
+  }
+
+  return { type: type, schematype: schematype };
+};

node_modules/mongoose/lib/helpers/query/handleImmutable.js

@@ -0,0 +1,28 @@
+'use strict';
+
+const StrictModeError = require('../../error/strict');
+
+module.exports = function handleImmutable(schematype, strict, obj, key, fullPath, ctx) {
+  if (schematype == null || !schematype.options || !schematype.options.immutable) {
+    return false;
+  }
+  let immutable = schematype.options.immutable;
+
+  if (typeof immutable === 'function') {
+    immutable = immutable.call(ctx, ctx);
+  }
+  if (!immutable) {
+    return false;
+  }
+
+  if (strict === false) {
+    return false;
+  }
+  if (strict === 'throw') {
+    throw new StrictModeError(null,
+      `Field ${fullPath} is immutable and strict = 'throw'`);
+  }
+
+  delete obj[key];
+  return true;
+};

node_modules/mongoose/lib/helpers/query/handleReadPreferenceAliases.js

@@ -0,0 +1,23 @@
+'use strict';
+
+module.exports = function handleReadPreferenceAliases(pref) {
+  switch (pref) {
+    case 'p':
+      pref = 'primary';
+      break;
+    case 'pp':
+      pref = 'primaryPreferred';
+      break;
+    case 's':
+      pref = 'secondary';
+      break;
+    case 'sp':
+      pref = 'secondaryPreferred';
+      break;
+    case 'n':
+      pref = 'nearest';
+      break;
+  }
+
+  return pref;
+};

node_modules/mongoose/lib/helpers/query/hasDollarKeys.js

@@ -0,0 +1,23 @@
+'use strict';
+
+/*!
+ * ignore
+ */
+
+module.exports = function hasDollarKeys(obj) {
+
+  if (typeof obj !== 'object' || obj === null) {
+    return false;
+  }
+
+  const keys = Object.keys(obj);
+  const len = keys.length;
+
+  for (let i = 0; i < len; ++i) {
+    if (keys[i][0] === '$') {
+      return true;
+    }
+  }
+
+  return false;
+};

node_modules/mongoose/lib/helpers/query/isOperator.js

@@ -0,0 +1,14 @@
+'use strict';
+
+const specialKeys = new Set([
+  '$ref',
+  '$id',
+  '$db'
+]);
+
+module.exports = function isOperator(path) {
+  return (
+    path[0] === '$' &&
+    !specialKeys.has(path)
+  );
+};

node_modules/mongoose/lib/helpers/query/sanitizeFilter.js

@@ -0,0 +1,38 @@
+'use strict';
+
+const hasDollarKeys = require('./hasDollarKeys');
+const { trustedSymbol } = require('./trusted');
+
+module.exports = function sanitizeFilter(filter) {
+  if (filter == null || typeof filter !== 'object') {
+    return filter;
+  }
+  if (Array.isArray(filter)) {
+    for (const subfilter of filter) {
+      sanitizeFilter(subfilter);
+    }
+    return filter;
+  }
+
+  const filterKeys = Object.keys(filter);
+  for (const key of filterKeys) {
+    const value = filter[key];
+    if (value != null && value[trustedSymbol]) {
+      continue;
+    }
+    if (key === '$and' || key === '$or') {
+      sanitizeFilter(value);
+      continue;
+    }
+
+    if (hasDollarKeys(value)) {
+      const keys = Object.keys(value);
+      if (keys.length === 1 && keys[0] === '$eq') {
+        continue;
+      }
+      filter[key] = { $eq: filter[key] };
+    }
+  }
+
+  return filter;
+};

node_modules/mongoose/lib/helpers/query/sanitizeProjection.js

@@ -0,0 +1,14 @@
+'use strict';
+
+module.exports = function sanitizeProjection(projection) {
+  if (projection == null) {
+    return;
+  }
+
+  const keys = Object.keys(projection);
+  for (let i = 0; i < keys.length; ++i) {
+    if (typeof projection[keys[i]] === 'string') {
+      projection[keys[i]] = 1;
+    }
+  }
+};

node_modules/mongoose/lib/helpers/query/selectPopulatedFields.js

@@ -0,0 +1,49 @@
+'use strict';
+
+const isExclusive = require('../projection/isExclusive');
+const isInclusive = require('../projection/isInclusive');
+
+/*!
+ * ignore
+ */
+
+module.exports = function selectPopulatedFields(fields, userProvidedFields, populateOptions) {
+  if (populateOptions == null) {
+    return;
+  }
+
+  const paths = Object.keys(populateOptions);
+  userProvidedFields = userProvidedFields || {};
+  if (isInclusive(fields)) {
+    for (const path of paths) {
+      if (!isPathInFields(userProvidedFields, path)) {
+        fields[path] = 1;
+      } else if (userProvidedFields[path] === 0) {
+        delete fields[path];
+      }
+    }
+  } else if (isExclusive(fields)) {
+    for (const path of paths) {
+      if (userProvidedFields[path] == null) {
+        delete fields[path];
+      }
+    }
+  }
+};
+
+/*!
+ * ignore
+ */
+
+function isPathInFields(userProvidedFields, path) {
+  const pieces = path.split('.');
+  const len = pieces.length;
+  let cur = pieces[0];
+  for (let i = 1; i < len; ++i) {
+    if (userProvidedFields[cur] != null || userProvidedFields[cur + '.$'] != null) {
+      return true;
+    }
+    cur += '.' + pieces[i];
+  }
+  return userProvidedFields[cur] != null || userProvidedFields[cur + '.$'] != null;
+}

node_modules/mongoose/lib/helpers/query/trusted.js

@@ -0,0 +1,13 @@
+'use strict';
+
+const trustedSymbol = Symbol('mongoose#trustedSymbol');
+
+exports.trustedSymbol = trustedSymbol;
+
+exports.trusted = function trusted(obj) {
+  if (obj == null || typeof obj !== 'object') {
+    return obj;
+  }
+  obj[trustedSymbol] = true;
+  return obj;
+};

node_modules/mongoose/lib/helpers/query/validOps.js

@@ -0,0 +1,22 @@
+'use strict';
+
+module.exports = Object.freeze([
+  // Read
+  'count',
+  'countDocuments',
+  'distinct',
+  'estimatedDocumentCount',
+  'find',
+  'findOne',
+  // Update
+  'findOneAndReplace',
+  'findOneAndUpdate',
+  'replaceOne',
+  'updateMany',
+  'updateOne',
+  // Delete
+  'deleteMany',
+  'deleteOne',
+  'findOneAndDelete',
+  'findOneAndRemove'
+]);