some progress

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

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = function addAutoId(schema) {
+  const _obj = { _id: { auto: true } };
+  _obj._id[schema.options.typeKey] = 'ObjectId';
+  schema.add(_obj);
+};

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

@@ -0,0 +1,12 @@
+'use strict';
+
+const builtinPlugins = require('../../plugins');
+
+module.exports = function applyBuiltinPlugins(schema) {
+  for (const plugin of Object.values(builtinPlugins)) {
+    plugin(schema, { deduplicate: true });
+  }
+  schema.plugins = Object.values(builtinPlugins).
+    map(fn => ({ fn, opts: { deduplicate: true } })).
+    concat(schema.plugins);
+};

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

@@ -0,0 +1,55 @@
+'use strict';
+
+module.exports = function applyPlugins(schema, plugins, options, cacheKey) {
+  if (schema[cacheKey]) {
+    return;
+  }
+  schema[cacheKey] = true;
+
+  if (!options || !options.skipTopLevel) {
+    let pluginTags = null;
+    for (const plugin of plugins) {
+      const tags = plugin[1] == null ? null : plugin[1].tags;
+      if (!Array.isArray(tags)) {
+        schema.plugin(plugin[0], plugin[1]);
+        continue;
+      }
+
+      pluginTags = pluginTags || new Set(schema.options.pluginTags || []);
+      if (!tags.find(tag => pluginTags.has(tag))) {
+        continue;
+      }
+      schema.plugin(plugin[0], plugin[1]);
+    }
+  }
+
+  options = Object.assign({}, options);
+  delete options.skipTopLevel;
+
+  if (options.applyPluginsToChildSchemas !== false) {
+    for (const path of Object.keys(schema.paths)) {
+      const type = schema.paths[path];
+      if (type.schema != null) {
+        applyPlugins(type.schema, plugins, options, cacheKey);
+
+        // Recompile schema because plugins may have changed it, see gh-7572
+        type.caster.prototype.$__setSchema(type.schema);
+      }
+    }
+  }
+
+  const discriminators = schema.discriminators;
+  if (discriminators == null) {
+    return;
+  }
+
+  const applyPluginsToDiscriminators = options.applyPluginsToDiscriminators;
+
+  const keys = Object.keys(discriminators);
+  for (const discriminatorKey of keys) {
+    const discriminatorSchema = discriminators[discriminatorKey];
+
+    applyPlugins(discriminatorSchema, plugins,
+      { skipTopLevel: !applyPluginsToDiscriminators }, cacheKey);
+  }
+};

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

@@ -0,0 +1,30 @@
+'use strict';
+
+const get = require('../get');
+
+module.exports = function applyWriteConcern(schema, options) {
+  const writeConcern = get(schema, 'options.writeConcern', {});
+  if (Object.keys(writeConcern).length != 0) {
+    options.writeConcern = {};
+    if (!('w' in options) && writeConcern.w != null) {
+      options.writeConcern.w = writeConcern.w;
+    }
+    if (!('j' in options) && writeConcern.j != null) {
+      options.writeConcern.j = writeConcern.j;
+    }
+    if (!('wtimeout' in options) && writeConcern.wtimeout != null) {
+      options.writeConcern.wtimeout = writeConcern.wtimeout;
+    }
+  }
+  else {
+    if (!('w' in options) && writeConcern.w != null) {
+      options.w = writeConcern.w;
+    }
+    if (!('j' in options) && writeConcern.j != null) {
+      options.j = writeConcern.j;
+    }
+    if (!('wtimeout' in options) && writeConcern.wtimeout != null) {
+      options.wtimeout = writeConcern.wtimeout;
+    }
+  }
+};

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

@@ -0,0 +1,12 @@
+'use strict';
+
+/**
+ * For consistency's sake, we replace positional operator `$` and array filters
+ * `$[]` and `$[foo]` with `0` when looking up schema paths.
+ */
+
+module.exports = function cleanPositionalOperators(path) {
+  return path.
+    replace(/\.\$(\[[^\]]*\])?(?=\.)/g, '.0').
+    replace(/\.\$(\[[^\]]*\])?$/g, '.0');
+};

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

@@ -0,0 +1,164 @@
+'use strict';
+
+const get = require('../get');
+const helperIsObject = require('../isObject');
+const decorateDiscriminatorIndexOptions = require('../indexes/decorateDiscriminatorIndexOptions');
+
+/**
+ * Gather all indexes defined in the schema, including single nested,
+ * document arrays, and embedded discriminators.
+ * @param {Schema} schema
+ * @api private
+ */
+
+module.exports = function getIndexes(schema) {
+  let indexes = [];
+  const schemaStack = new WeakMap();
+  const indexTypes = schema.constructor.indexTypes;
+  const indexByName = new Map();
+
+  collectIndexes(schema);
+  return indexes;
+
+  function collectIndexes(schema, prefix, baseSchema) {
+    // Ignore infinitely nested schemas, if we've already seen this schema
+    // along this path there must be a cycle
+    if (schemaStack.has(schema)) {
+      return;
+    }
+    schemaStack.set(schema, true);
+
+    prefix = prefix || '';
+    const keys = Object.keys(schema.paths);
+
+    for (const key of keys) {
+      const path = schema.paths[key];
+      if (baseSchema != null && baseSchema.paths[key]) {
+        // If looking at an embedded discriminator schema, don't look at paths
+        // that the
+        continue;
+      }
+
+      if (path.$isMongooseDocumentArray || path.$isSingleNested) {
+        if (get(path, 'options.excludeIndexes') !== true &&
+            get(path, 'schemaOptions.excludeIndexes') !== true &&
+            get(path, 'schema.options.excludeIndexes') !== true) {
+          collectIndexes(path.schema, prefix + key + '.');
+        }
+
+        if (path.schema.discriminators != null) {
+          const discriminators = path.schema.discriminators;
+          const discriminatorKeys = Object.keys(discriminators);
+          for (const discriminatorKey of discriminatorKeys) {
+            collectIndexes(discriminators[discriminatorKey],
+              prefix + key + '.', path.schema);
+          }
+        }
+
+        // Retained to minimize risk of backwards breaking changes due to
+        // gh-6113
+        if (path.$isMongooseDocumentArray) {
+          continue;
+        }
+      }
+
+      const index = path._index || (path.caster && path.caster._index);
+
+      if (index !== false && index !== null && index !== undefined) {
+        const field = {};
+        const isObject = helperIsObject(index);
+        const options = isObject ? index : {};
+        const type = typeof index === 'string' ? index :
+          isObject ? index.type :
+            false;
+
+        if (type && indexTypes.indexOf(type) !== -1) {
+          field[prefix + key] = type;
+        } else if (options.text) {
+          field[prefix + key] = 'text';
+          delete options.text;
+        } else {
+          const isDescendingIndex = Number(index) === -1;
+          field[prefix + key] = isDescendingIndex ? -1 : 1;
+        }
+
+        delete options.type;
+        if (!('background' in options)) {
+          options.background = true;
+        }
+        if (schema.options.autoIndex != null) {
+          options._autoIndex = schema.options.autoIndex;
+        }
+
+        const indexName = options && options.name;
+
+        if (typeof indexName === 'string') {
+          if (indexByName.has(indexName)) {
+            Object.assign(indexByName.get(indexName), field);
+          } else {
+            indexes.push([field, options]);
+            indexByName.set(indexName, field);
+          }
+        } else {
+          indexes.push([field, options]);
+          indexByName.set(indexName, field);
+        }
+      }
+    }
+
+    schemaStack.delete(schema);
+
+    if (prefix) {
+      fixSubIndexPaths(schema, prefix);
+    } else {
+      schema._indexes.forEach(function(index) {
+        const options = index[1];
+        if (!('background' in options)) {
+          options.background = true;
+        }
+        decorateDiscriminatorIndexOptions(schema, options);
+      });
+      indexes = indexes.concat(schema._indexes);
+    }
+  }
+
+  /**
+   * Checks for indexes added to subdocs using Schema.index().
+   * These indexes need their paths prefixed properly.
+   *
+   * schema._indexes = [ [indexObj, options], [indexObj, options] ..]
+   * @param {Schema} schema
+   * @param {String} prefix
+   * @api private
+   */
+
+  function fixSubIndexPaths(schema, prefix) {
+    const subindexes = schema._indexes;
+    const len = subindexes.length;
+    for (let i = 0; i < len; ++i) {
+      const indexObj = subindexes[i][0];
+      const indexOptions = subindexes[i][1];
+      const keys = Object.keys(indexObj);
+      const klen = keys.length;
+      const newindex = {};
+
+      // use forward iteration, order matters
+      for (let j = 0; j < klen; ++j) {
+        const key = keys[j];
+        newindex[prefix + key] = indexObj[key];
+      }
+
+      const newIndexOptions = Object.assign({}, indexOptions);
+      if (indexOptions != null && indexOptions.partialFilterExpression != null) {
+        newIndexOptions.partialFilterExpression = {};
+        const partialFilterExpression = indexOptions.partialFilterExpression;
+        for (const key of Object.keys(partialFilterExpression)) {
+          newIndexOptions.partialFilterExpression[prefix + key] =
+            partialFilterExpression[key];
+        }
+      }
+
+      indexes.push([newindex, newIndexOptions]);
+    }
+  }
+};

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

@@ -0,0 +1,28 @@
+'use strict';
+
+const get = require('../get');
+
+module.exports = function getKeysInSchemaOrder(schema, val, path) {
+  const schemaKeys = path != null ? Object.keys(get(schema.tree, path, {})) : Object.keys(schema.tree);
+  const valKeys = new Set(Object.keys(val));
+
+  let keys;
+  if (valKeys.size > 1) {
+    keys = new Set();
+    for (const key of schemaKeys) {
+      if (valKeys.has(key)) {
+        keys.add(key);
+      }
+    }
+    for (const key of valKeys) {
+      if (!keys.has(key)) {
+        keys.add(key);
+      }
+    }
+    keys = Array.from(keys);
+  } else {
+    keys = Array.from(valKeys);
+  }
+
+  return keys;
+};

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

@@ -0,0 +1,38 @@
+'use strict';
+
+const numberRE = /^\d+$/;
+
+/**
+ * Behaves like `Schema#path()`, except for it also digs into arrays without
+ * needing to put `.0.`, so `getPath(schema, 'docArr.elProp')` works.
+ * @api private
+ */
+
+module.exports = function getPath(schema, path) {
+  let schematype = schema.path(path);
+  if (schematype != null) {
+    return schematype;
+  }
+
+  const pieces = path.split('.');
+  let cur = '';
+  let isArray = false;
+
+  for (const piece of pieces) {
+    if (isArray && numberRE.test(piece)) {
+      continue;
+    }
+    cur = cur.length === 0 ? piece : cur + '.' + piece;
+
+    schematype = schema.path(cur);
+    if (schematype != null && schematype.schema) {
+      schema = schematype.schema;
+      cur = '';
+      if (!isArray && schematype.$isMongooseDocumentArray) {
+        isArray = true;
+      }
+    }
+  }
+
+  return schematype;
+};

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

@@ -0,0 +1,20 @@
+'use strict';
+
+const addAutoId = require('./addAutoId');
+
+module.exports = function handleIdOption(schema, options) {
+  if (options == null || options._id == null) {
+    return schema;
+  }
+
+  schema = schema.clone();
+  if (!options._id) {
+    schema.remove('_id');
+    schema.options._id = false;
+  } else if (!schema.paths['_id']) {
+    addAutoId(schema);
+    schema.options._id = true;
+  }
+
+  return schema;
+};

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

@@ -0,0 +1,24 @@
+'use strict';
+
+module.exports = handleTimestampOption;
+
+/*!
+ * ignore
+ */
+
+function handleTimestampOption(arg, prop) {
+  if (arg == null) {
+    return null;
+  }
+
+  if (typeof arg === 'boolean') {
+    return prop;
+  }
+  if (typeof arg[prop] === 'boolean') {
+    return arg[prop] ? prop : null;
+  }
+  if (!(prop in arg)) {
+    return prop;
+  }
+  return arg[prop];
+}

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

@@ -0,0 +1,32 @@
+'use strict';
+
+/*!
+ * ignore
+ */
+
+module.exports = function addIdGetter(schema) {
+  // ensure the documents receive an id getter unless disabled
+  const autoIdGetter = !schema.paths['id'] &&
+    schema.paths['_id'] &&
+    schema.options.id;
+  if (!autoIdGetter) {
+    return schema;
+  }
+
+  schema.virtual('id').get(idGetter);
+
+  return schema;
+};
+
+/**
+ * Returns this documents _id cast to a string.
+ * @api private
+ */
+
+function idGetter() {
+  if (this._id != null) {
+    return String(this._id);
+  }
+
+  return null;
+}

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

@@ -0,0 +1,35 @@
+'use strict';
+
+module.exports = function merge(s1, s2, skipConflictingPaths) {
+  const paths = Object.keys(s2.tree);
+  const pathsToAdd = {};
+  for (const key of paths) {
+    if (skipConflictingPaths && (s1.paths[key] || s1.nested[key] || s1.singleNestedPaths[key])) {
+      continue;
+    }
+    pathsToAdd[key] = s2.tree[key];
+  }
+  s1.add(pathsToAdd);
+
+  s1.callQueue = s1.callQueue.concat(s2.callQueue);
+  s1.method(s2.methods);
+  s1.static(s2.statics);
+
+  for (const [option, value] of Object.entries(s2._userProvidedOptions)) {
+    if (!(option in s1._userProvidedOptions)) {
+      s1._userProvidedOptions[option] = value;
+      s1.options[option] = value;
+    }
+  }
+
+  for (const query in s2.query) {
+    s1.query[query] = s2.query[query];
+  }
+
+  for (const virtual in s2.virtuals) {
+    s1.virtuals[virtual] = s2.virtuals[virtual].clone();
+  }
+
+  s1._indexes = s1._indexes.concat(s2._indexes || []);
+  s1.s.hooks.merge(s2.s.hooks, false);
+};