diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..7100dc2
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,36 @@
+
+module.exports = {
+  root: true,
+  parserOptions: {
+//    ecmaVersion: 2017,
+    sourceType: 'module',
+//    project: "./tsconfig.json",
+    tsconfigRootDir: __dirname,
+    project: ['./test.tsconfig.json'],
+  },
+  parser: '@typescript-eslint/parser',
+  plugins: [
+    '@typescript-eslint',
+  ],
+  extends: [
+//    'eslint:recommended',
+//    'plugin:@typescript-eslint/eslint-recommended',
+//    'plugin:@typescript-eslint/recommended',
+//    "plugin:@typescript-eslint/recommended-requiring-type-checking",
+  ],
+  env: {
+    browser: true,
+    node: true,
+    es6: true,
+  },
+//  plugins: [
+//    "promise"
+//  ],
+  rules: {
+    "@typescript-eslint/no-floating-promises": "error",
+//    "await-promise": 2,
+//    "no-debugger": 0,
+//  	"no-console": 0,
+//  	"no-mixed-spaces-and-tabs": 0,
+  }
+};
diff --git a/.gitignore b/.gitignore
index 318b19e..1f8ddf2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,6 @@ coverage
 test/test-bundle.js
 npm-debug.log
 dist
+/.nyc_output
+/lib
+/dist
diff --git a/.jshintrc b/.jshintrc
deleted file mode 100755
index 2f0446d..0000000
--- a/.jshintrc
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  "curly": true,
-  "eqeqeq": true,
-  "immed": true,
-  "newcap": true,
-  "noarg": true,
-  "sub": true,
-  "undef": true,
-  "unused": true,
-  "eqnull": true,
-  "browser": true,
-  "node": true,
-  "strict": true,
-  "globalstrict": true,
-  "globals": {
-    "Pouch": true,
-    "blobUtil": true
-  },
-  "white": true,
-  "indent": 2,
-  "maxlen": 100,
-  "predef": [
-    "process",
-    "global",
-    "require",
-    "console",
-    "describe",
-    "beforeEach",
-    "afterEach",
-    "it",
-    "emit"
-  ]
-}
\ No newline at end of file
diff --git a/README.md b/README.md
index 80ce7b3..076ea98 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ Then include it after `pouchdb.js` in your HTML page:
 ```html
 <script src="pouchdb.js"></script>
 <script src="pouchdb.find.js"></script>
-<script src="pouchdb.relational-pouch.js"></script>
+<script src="pouchdb.relational-pouch.browser.js"></script>
 ```
 
 ### In Node.js
@@ -55,6 +55,31 @@ PouchDB.plugin(require('relational-pouch'));
 PouchDB.plugin(require('pouchdb-find'));
 ```
 
+#### Typescript
+
+This package contains its own type definitions. Due to the nature of setSchema, which alters the database on which it is called, typescript needs to know about these changes. This is done by returning a new type. So working with this plugin should look something like this:
+
+```js
+import Pouch from 'pouchdb-core';
+//import some adapter
+import find from 'pouchdb-find';
+import rel from 'relational-pouch';
+
+Pouch
+  //.plugin(someadapter)
+  .plugin(find)
+  .plugin(rel);
+
+const baseDB = new Pouch(...);//adapter options
+const relDB = baseDB.setSchema(...);//schema options
+
+let relDoc = await relDB.rel.find('sometype', 'someid');
+
+//non relation pouch API is still available
+let doc = await relDB.get('someid');
+```
+
+
 API
 ----------
 
@@ -167,14 +192,8 @@ Result:
 
 ```js
 {
-  "posts": [
-    {
-      "title": "Rails is Omakase",
-      "text": "There are a lot of a-la-carte software...",
-      "id": "14760983-285C-6D1F-9813-D82E08F1AC29",
-      "rev": "1-84df2c73028e5b8d0ae1cbb401959370"
-    }
-  ]
+  "id": "14760983-285C-6D1F-9813-D82E08F1AC29",
+  "rev": "1-84df2c73028e5b8d0ae1cbb401959370"
 }
 ```
 
@@ -192,14 +211,8 @@ Result:
 
 ```js
 {
-  "posts": [
-    {
-      "title": "Rails is Unagi",
-      "text": "Delicious unagi. Mmmmmm.",
-      "id": 1,
-      "rev": "1-0ae315ee597b22cc4b1acf9e0edc35ba"
-    }
-  ]
+  "id": 1,
+  "rev": "1-0ae315ee597b22cc4b1acf9e0edc35ba"
 }
 ```
 
@@ -359,25 +372,10 @@ var attachment = new Blob(['Is there life on Mars?']);
 db.rel.putAttachment('post', {id:1, rev:"1-..."}, 'file', attachment, 'text/plain');
 ```
 
-Result:
+This returns the new rev:
 
 ```js
-{
-  "posts": [
-    {
-      "attachments": {
-        "file": {
-          "content_type": "text/plain",
-          "digest": "md5-1cz9JKh0i+1OLJonmitgiQ==",
-          "length": 22,
-          // ... http://pouchdb.com/guides/attachments.html
-        }
-      },
-      "id": 1,
-      "rev": "2-...."
-    }
-  ]
-}
+"2-...."
 ```
 
 ### db.rel.getAttachment(type, id, attachmentId)
@@ -409,17 +407,10 @@ Or continuing from the `putAttachment` example:
 db.rel.removeAttachment('post', {id: 1, rev:"2-09d5c5bd86fc170c064b296773044ea9"} , 'file');
 ```
 
-Result:
+This returns the new rev:
 
 ```js
-{
-  "posts": [
-    {
-      "id": 1,
-      "rev": "3-...."
-    }
-  ]
-}
+"3-...."
 ```
 
 ### db.rel.parseDocID(docID)
@@ -1118,10 +1109,14 @@ Testing
 
 ### In Node
 
-This will run the tests in Node using LevelDB:
+This will run the tests in Node using memory and http adapter:
 
     npm test
 
+if you don't have a admin party setup you can specify admin credentials in the RELATIONAL_POUCH_DB_AUTH environment variable like this:
+
+	RELATIONAL_POUCH_DB_AUTH=user:password@
+
 You can also check for 100% code coverage using:
 
     npm run coverage
@@ -1150,3 +1145,20 @@ You can run e.g.
     CLIENT=selenium:phantomjs npm test
 
 This will run the tests automatically and the process will exit with a 0 or a 1 when it's done. Firefox uses IndexedDB, and PhantomJS uses WebSQL.
+
+## Changelog
+
+### 4.0.0
+
+- Breaking change: To prevent us from having to do cloning of input documents, we have changed the `save`, `putAttachment` and `removeAttachment` API. These functions no longer return the complete document. The attachment functions only return the new `rev` value, while the save will also return the `id`. So after these promises resolve you have to manually update your in app data to reflect this new revision (and possibly id) if you want to update the document later. You can use something like the following:
+  ```js
+  let updatedData = await db.rel.save('post', post);
+  Object.assign(post, updatedData);
+  ```
+  or
+  ```js
+  post.rev = await db.rel.putAttachment('post', post, 'file', fileData);
+  ```
+- This library now uses Typescript, Webpack and Babel in its build setup. The build creates files in 2 output directories: lib and dist.
+	- The lib directory will contain the output of `tsc` in esnext mode. So this can be used by Webpack and other module aware systems. These will require Babel transformations if you want to use them, but this way you can specify your own target.
+	- The dist directory contains 2 files, pouchdb.relational-pouch.browser.js and pouchdb.relational-pouch.node.js. These are compiled by webpack with targets ">2%, not ie 11" and "node 10". This should be sufficient for now, but otherwise you can build your own with Webpack.
\ No newline at end of file
diff --git a/bin/dev-server.js b/bin/dev-server.js
index d7bbaed..3ab3ad1 100755
--- a/bin/dev-server.js
+++ b/bin/dev-server.js
@@ -5,6 +5,8 @@
 var COUCH_HOST = process.env.COUCH_HOST || 'http://127.0.0.1:5984';
 var HTTP_PORT = 8001;
 
+const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
+
 var Promise = require('bluebird');
 var request = require('request');
 var http_server = require("http-server");
@@ -12,39 +14,87 @@ var fs = require('fs');
 var indexfile = "./test/test.js";
 var dotfile = "./test/.test-bundle.js";
 var outfile = "./test/test-bundle.js";
-var watchify = require("watchify");
-var browserify = require('browserify');
-var b = browserify(indexfile, {
-  cache: {},
-  packageCache: {},
-  plugin: [watchify]
-})
+var webpack = require('webpack');
+var path = require('path');
 
-b.on('update', bundle);
-bundle();
+var b = webpack({
+  target: "web",
+	entry: "./test/test.ts",
+	mode: 'development',
+	devtool: 'source-map',
+	output: {
+	  path: path.resolve(__dirname, '../test'),
+	  filename: 'test-bundle.js',
+    libraryTarget: 'umd',
+  },
+  plugins: [
+    new ForkTsCheckerWebpackPlugin({eslint: true, tsconfig: "test.tsconfig.json"}),
+    new webpack.EnvironmentPlugin(['RELATIONAL_POUCH_DB_AUTH']),
+  ],
+  module: {
+    rules: [
+//      {
+//        enforce: 'pre',
+//        test: /\.[tj]s$/,
+//        exclude: /node_modules/,
+//        loader: 'eslint-loader',
+//      },
+      {
+        test: /\.[tj]s$/,
+        exclude: /(node_modules|bower_components)/,
+        use: [
+          {
+            loader: 'babel-loader',
+            options: {
+              presets: [
+                ['@babel/preset-env',
+                {
+                  "targets": "last 1 Chrome versions",
+                  "modules": false,
+                  useBuiltIns: "usage",
+                  corejs: 3,
+                }],
+              ],
+            },
+          },
+          {
+            loader: 'ts-loader',
+            options: {
+              transpileOnly: true,
+              experimentalWatchApi: true,
+              context: path.resolve(__dirname, '../'),
+              configFile: "test.tsconfig.json",
+            },
+          },
+        ],
+      }
+    ]
+  },
+  resolve: {
+    extensions: ['tsx', '.ts', '.js', '.json'],
+  },
+}).watch({}, (error, stats) => {
+  if (error) {
+    console.error(error);
+    return;
+  }
+  
+  let logOptions = {all: false, colors: true, assets: true, errors: true, errorDetails: true, warnings: true, errorStack: true};
+  if (!stats.hasErrors()) {
+    console.log('Updated');
+    console.log(stats.toString(logOptions));
+    filesWritten = true;
+    checkReady();
+  } else {
+    const info = stats.toJson();
+    console.error(stats.toString(logOptions));//children: false, entrypoints: false, hash: false, modules: false, , chunks: false
+  }
+});
 
 var filesWritten = false;
 var serverStarted = false;
 var readyCallback;
 
-function bundle() {
-  var wb = b.bundle();
-  wb.on('error', function (err) {
-    console.error(String(err));
-  });
-  wb.on("end", end);
-  wb.pipe(fs.createWriteStream(dotfile));
-
-  function end() {
-    fs.rename(dotfile, outfile, function (err) {
-      if (err) { return console.error(err); }
-      console.log('Updated:', outfile);
-      filesWritten = true;
-      checkReady();
-    });
-  }
-}
-
 function startServers(callback) {
   readyCallback = callback;
   // enable CORS globally, because it's easier this way
diff --git a/bower.json b/bower.json
index 630201f..aea6b59 100644
--- a/bower.json
+++ b/bower.json
@@ -1,12 +1,12 @@
 {
   "name": "relational-pouch",
-  "version": "3.2.0",
+  "version": "4.0.0",
   "description": "PouchDB, relational-style",
   "homepage": "https://github.com/pouchdb-community/relational-pouch",
   "authors": [
     "Nolan Lawson <nolan.lawson@gmail.com>"
   ],
-  "main": "dist/pouchdb.relational-pouch.js",
+  "main": "dist/pouchdb.relational-pouch.browser.js",
   "moduleType": [
     "node"
   ],
@@ -23,6 +23,7 @@
     "bower_components",
     "test",
     "tests",
-    "vendor"
+    "vendor",
+    "lib"
   ]
 }
diff --git a/dist/pouchdb.relational-pouch.js b/dist/pouchdb.relational-pouch.js
deleted file mode 100644
index d560abb..0000000
--- a/dist/pouchdb.relational-pouch.js
+++ /dev/null
@@ -1,1561 +0,0 @@
-(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.RelationalPouch = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-'use strict';
-exports.Map = LazyMap; // TODO: use ES6 map
-exports.Set = LazySet; // TODO: use ES6 set
-// based on https://github.com/montagejs/collections
-function LazyMap() {
-  this.store = {};
-}
-/* istanbul ignore next */
-LazyMap.prototype.mangle = function (key) {
-  if (typeof key !== "string") {
-    throw new TypeError("key must be a string but Got " + key);
-  }
-  return '$' + key;
-};
-/* istanbul ignore next */
-LazyMap.prototype.unmangle = function (key) {
-  return key.substring(1);
-};
-/* istanbul ignore next */
-LazyMap.prototype.get = function (key) {
-  var mangled = this.mangle(key);
-  if (mangled in this.store) {
-    return this.store[mangled];
-  } else {
-    return void 0;
-  }
-};
-/* istanbul ignore next */
-LazyMap.prototype.set = function (key, value) {
-  var mangled = this.mangle(key);
-  this.store[mangled] = value;
-  return true;
-};
-/* istanbul ignore next */
-LazyMap.prototype.has = function (key) {
-  var mangled = this.mangle(key);
-  return mangled in this.store;
-};
-/* istanbul ignore next */
-LazyMap.prototype["delete"] = function (key) {
-  var mangled = this.mangle(key);
-  if (mangled in this.store) {
-    delete this.store[mangled];
-    return true;
-  }
-  return false;
-};
-/* istanbul ignore next */
-LazyMap.prototype.forEach = function (cb) {
-  var self = this;
-  var keys = Object.keys(self.store);
-  keys.forEach(function (key) {
-    var value = self.store[key];
-    key = self.unmangle(key);
-    cb(value, key);
-  });
-};
-
-/* istanbul ignore next */
-function LazySet() {
-  this.store = new LazyMap();
-}
-/* istanbul ignore next */
-LazySet.prototype.add = function (key) {
-  return this.store.set(key, true);
-};
-/* istanbul ignore next */
-LazySet.prototype.has = function (key) {
-  return this.store.has(key);
-};
-/* istanbul ignore next */
-LazySet.prototype["delete"] = function (key) {
-  return this.store["delete"](key);
-};
-},{}],2:[function(require,module,exports){
-'use strict';
-
-var utils = require('./pouch-utils');
-var extend = utils.extend;
-var Promise = utils.Promise;
-var collections = require('./collections');
-var uuid = require('./uuid');
-var uniq = require('uniq');
-
-function createError(str) {
-  var err = new Error(str);
-  err.status = 400;
-  return err;
-}
-
-var MAX_INT_LENGTH = 16; // max int in JS is 9007199254740992
-var TYPE_UNDEF = '0';
-var TYPE_NUM = '1';
-var TYPE_STRING = '2';
-var TYPE_OBJ = '3';
-
-function serialize(type, id) {
-  // simple collation that goes like this:
-  // undefined < numbers < strings < object
-  var res = type.replace('_', '') + '_';
-  if (typeof id === 'number') {
-    // zpad
-    id = id.toString();
-    while (id.length < MAX_INT_LENGTH) {
-      id = '0' + id;
-    }
-    res += TYPE_NUM + '_' + id;
-  } else if (typeof id === 'undefined') {
-    // need lowest possible value
-    res += TYPE_UNDEF;
-  } else if (typeof id === 'object') {
-    // need highest possible value
-    res += TYPE_OBJ;
-  } else { // string
-    res += TYPE_STRING + '_' + id;
-  }
-  return res;
-}
-function deserialize(str) {
-  // should only have to deserialize numbers and strings
-  var idx = str.indexOf('_');
-  var collationType = str.charAt(idx + 1);
-  var id = str.substring(idx + 3);
-  if (collationType === TYPE_NUM) {
-    return parseInt(id, 10);
-  }
-  return id;
-}
-
-exports.setSchema = function (schema) {
-  var db = this;
-
-  var keysToSchemas = new collections.Map();
-  schema.forEach(function (type) {
-    keysToSchemas.set(type.singular, type);
-    keysToSchemas.set(type.plural, type);
-  });
-
-  // set default documentType
-  schema.forEach(function (type) {
-    type.documentType = type.documentType || type.singular;
-  });
-
-  // validate the relations
-  schema.forEach(function (type) {
-    if (type.relations) {
-      if (!Object.keys(type.relations).length) {
-        throw new Error('Invalid relations for: ' + type);
-      }
-      Object.keys(type.relations).forEach(function (field) {
-        var relationDef = type.relations[field];
-        if (Object.keys(relationDef).length !== 1) {
-          throw new Error('Invalid relationship definition for: ' + field);
-        }
-        var relationType = Object.keys(relationDef)[0];
-        var relatedField = relationDef[relationType];
-        if (typeof relatedField !== 'string') {
-          relatedField = relatedField.type;
-        }
-        if (!keysToSchemas.get(relatedField)) {
-          throw new Error('Unknown entity type: ' + relatedField);
-        }
-        if (relationType !== 'belongsTo' && relationType !== 'hasMany') {
-          throw new Error('Invalid relationship type for ' + field + ': ' + relationType);
-        }
-      });
-    }
-  });
-
-  /**
-   * Transform a relational object into a PouchDB doc.
-   */
-  function toRawDoc(typeInfo, obj) {
-    obj = extend(true, {}, obj);
-    var doc = {};
-
-    if (obj.rev) {
-      doc._rev = obj.rev;
-      delete obj.rev;
-    }
-
-    if (obj.attachments) {
-      doc._attachments = obj.attachments;
-      delete obj.attachments;
-    }
-
-    var id = obj.id || uuid();
-    delete obj.id;
-    doc._id = serialize(typeInfo.documentType, id);
-
-    if (typeInfo.relations) {
-      Object.keys(typeInfo.relations).forEach(function (field) {
-        var relationDef = typeInfo.relations[field];
-        var relationType = Object.keys(relationDef)[0];
-
-        if (relationType === 'belongsTo') {
-          if (obj[field] && typeof obj[field].id !== 'undefined') {
-            obj[field] = obj[field].id;
-          }
-        } else { // hasMany
-          var relatedType = relationDef[relationType];
-          if (relatedType.options && relatedType.options.queryInverse) {
-            delete obj[field];
-            return;
-          }
-          if (obj[field]) {
-            var dependents = obj[field].map(function (dependent) {
-              if (dependent && typeof dependent.id !== 'undefined') {
-                return dependent.id;
-              }
-              return dependent;
-            });
-            obj[field] = dependents;
-          } else {
-            obj[field] = [];
-          }
-        }
-      });
-    }
-
-    doc.data = obj;
-
-    return doc;
-  }
-
-  /**
-   * Transform a PouchDB doc into a relational object.
-   */
-  function fromRawDoc(pouchDoc) {
-    var obj = pouchDoc.data;
-    obj.id = deserialize(pouchDoc._id);
-    obj.rev = pouchDoc._rev;
-    if (pouchDoc._attachments) {
-      obj.attachments = pouchDoc._attachments;
-    }
-    return obj;
-  }
-
-  function getTypeInfo(type) {
-    if (!keysToSchemas.has(type)) {
-      throw createError('unknown type: ' + JSON.stringify(type));
-    }
-
-    return keysToSchemas.get(type);
-  }
-
-  function _save(type, obj) {
-    var typeInfo = getTypeInfo(type);
-    var pouchDoc;
-    return Promise.resolve().then(function () {
-      pouchDoc = toRawDoc(typeInfo, obj);
-      return db.put(pouchDoc);
-    }).then(function (pouchRes) {
-      var res = {};
-      res[typeInfo.plural] = [extend(true, obj, {
-        id: deserialize(pouchRes.id),
-        rev: pouchRes.rev
-      })];
-      return res;
-    });
-  }
-
-  function _del(type, obj) {
-    var typeInfo = getTypeInfo(type);
-    var pouchDoc;
-    return Promise.resolve().then(function () {
-      pouchDoc = toRawDoc(typeInfo, obj);
-      pouchDoc = {
-        _id : pouchDoc._id,
-        _rev : pouchDoc._rev,
-        _deleted: true
-      };
-      return db.put(pouchDoc);
-    }).then(function () {
-      return {deleted: true};
-    });
-  }
-
-  function _find(type, idOrIds, foundObjects) {
-    var typeInfo = getTypeInfo(type);
-
-    var opts = {
-      include_docs: true
-    };
-
-    if (typeof idOrIds === 'undefined' || idOrIds === null) {
-      // find everything
-      opts.startkey = serialize(typeInfo.documentType);
-      opts.endkey = serialize(typeInfo.documentType, {});
-    } else if (Array.isArray(idOrIds)) {
-      // find multiple by ids
-      opts.keys = idOrIds.map(function (id) {
-        return serialize(typeInfo.documentType, id);
-      });
-    } else if (typeof idOrIds === 'object') {
-      if (typeof idOrIds.startkey  === 'undefined' || idOrIds.startkey === null) {
-        opts.startkey = serialize(typeInfo.documentType);
-      } else {
-        opts.startkey = serialize(typeInfo.documentType, idOrIds.startkey);
-      }
-      if (typeof idOrIds.endkey  === 'undefined' || idOrIds.endkey === null) {
-        opts.endkey = serialize(typeInfo.documentType, {});
-      } else {
-        opts.endkey = serialize(typeInfo.documentType, idOrIds.endkey);
-      }
-      if (typeof idOrIds.limit !== 'undefined' && idOrIds.limit !== null) {
-        opts.limit = idOrIds.limit;
-      }
-      if (typeof idOrIds.skip !== 'undefined' && idOrIds.skip !== null) {
-        opts.skip = idOrIds.skip;
-      }
-    } else {
-    // find by single id
-      opts.key = serialize(typeInfo.documentType, idOrIds);
-    }
-
-    return db.allDocs(opts).then(_parseAlldocs.bind(db, type, foundObjects));
-  }
-
-  //true = deleted, false = exists, null = not in database
-  function isDeleted(type, id) {
-    var typeInfo = getTypeInfo(type);
-
-    return db.get(serialize(typeInfo.documentType, id))
-      .then(function (doc) { return !!doc._deleted; })[
-      "catch"](function (err) { return err.reason === "deleted" ? true : null; });
-  }
-
-  function _parseAlldocs(type, foundObjects, pouchRes) {
-  	return _parseRelDocs(type, foundObjects, pouchRes.rows.filter(function (row) {
-      return row.doc && !row.value.deleted;
-    }).map(function (row) {
-      return row.doc;
-    }));
-  }
-
-  function parseRelDocs(type, pouchDocs) {
-  	return _parseRelDocs(type, new collections.Map(), pouchDocs);
-  }
-
-  function _parseRelDocs(type, foundObjects, pouchDocs) {
-  	var typeInfo = getTypeInfo(type);
-
-  	if (!foundObjects.has(type)) {
-      foundObjects.set(type, new collections.Map());
-    }
-
-  	return Promise.resolve().then(function() {
-      var tasks = pouchDocs.map(function (doc) {
-        var obj = fromRawDoc(doc);
-
-        foundObjects.get(type).set(JSON.stringify(obj.id), obj);
-
-        // fetch all relations
-        var subTasks = [];
-        Object.keys(typeInfo.relations || {}).forEach(function (field) {
-          var relationDef = typeInfo.relations[field];
-          var relationType = Object.keys(relationDef)[0];
-          var relatedType = relationDef[relationType];
-          var relationOptions = {};
-          if (typeof relatedType !== 'string') {
-            relationOptions = relatedType.options || {};
-            if (relationOptions.async) {
-              return;
-            }
-            if (relationOptions.queryInverse) {
-              delete obj[field];
-            }
-            relatedType = relatedType.type;
-          }
-          if (relationType === 'belongsTo') {
-            var relatedId = obj[field];
-            if (typeof relatedId !== 'undefined') {
-              subTasks.push(Promise.resolve().then(function () {
-
-                // short-circuit if it's already in the foundObjects
-                // else we could get caught in an infinite loop
-                if (foundObjects.has(relatedType) &&
-                    foundObjects.get(relatedType).has(JSON.stringify(relatedId))) {
-                  return;
-                }
-
-                // signal that we need to fetch it
-                return {
-                  relatedType: relatedType,
-                  relatedIds: [relatedId]
-                };
-              }));
-            }
-          } else { // hasMany
-            if (relationOptions.queryInverse) {
-              subTasks.push(_findHasMany(relatedType, relationOptions.queryInverse,
-                                         obj.id, foundObjects)
-                            .then(function () { return; }));
-              return;
-            }
-
-            var relatedIds = extend(true, [], obj[field]);
-            if (typeof relatedIds !== 'undefined' && relatedIds.length) {
-              subTasks.push(Promise.resolve().then(function () {
-
-                // filter out all ids that are already in the foundObjects
-                for (var i = relatedIds.length - 1; i >= 0; i--) {
-                  var relatedId = relatedIds[i];
-                  if (foundObjects.has(relatedType) &&
-                      foundObjects.get(relatedType).has(JSON.stringify(relatedId))) {
-                    delete relatedIds[i];
-                  }
-                }
-                relatedIds = relatedIds.filter(function (relatedId) {
-                  return typeof relatedId !== 'undefined';
-                });
-
-                // just return the ids and the types. We'll find them all
-                // in a single bulk operation in order to minimize HTTP requests
-                if (relatedIds.length) {
-                  return {
-                    relatedType: relatedType,
-                    relatedIds: relatedIds
-                  };
-                }
-              }));
-            }
-          }
-        });
-        return Promise.all(subTasks);
-      });
-      return Promise.all(tasks);
-    }).then(function (listsOfFetchTasks) {
-      // fetch in as few http requests as possible
-      var typesToIds = {};
-      listsOfFetchTasks.forEach(function (fetchTasks) {
-        fetchTasks.forEach(function (fetchTask) {
-          if (!fetchTask) {
-            return;
-          }
-          typesToIds[fetchTask.relatedType] =
-            (typesToIds[fetchTask.relatedType] || []).concat(fetchTask.relatedIds);
-        });
-      });
-
-      return utils.series(Object.keys(typesToIds).map(function (relatedType) {
-        var relatedIds = uniq(typesToIds[relatedType]);
-        return function () {return _find(relatedType, relatedIds, foundObjects); };
-      })).then(function () {
-        var res = {};
-        foundObjects.forEach(function (found, type) {
-          var typeInfo = getTypeInfo(type);
-          var list = res[typeInfo.plural] = [];
-          found.forEach(function (obj) {
-            list.push(obj);
-          });
-          //list.sort(lexCompare);
-        });
-        return res;
-      });
-    });
-  }
-
-  function putAttachment(type, obj, attachmentId, attachment, attachmentType) {
-    var dbDocId = serialize(type, obj.id);
-    var typeInfo = getTypeInfo(type);
-    return Promise.resolve().then(function () {
-      return db.putAttachment(dbDocId, attachmentId, obj.rev, attachment, attachmentType);
-    }).then(function (pouchRes) {
-      var res = {};
-      res[typeInfo.plural] = [extend(true, obj, {
-        id: deserialize(pouchRes.id),
-        rev: pouchRes.rev
-      })];
-      return res;
-    });
-  }
-
-  function removeAttachment(type, obj, attachmentId) {
-    var dbDocId = serialize(type, obj.id);
-    var typeInfo = getTypeInfo(type);
-    return Promise.resolve().then(function () {
-      return db.removeAttachment(dbDocId, attachmentId, obj.rev);
-    }).then(function (pouchRes) {
-      var res = {};
-      res[typeInfo.plural] = [extend(true, obj, {
-        id: deserialize(pouchRes.id),
-        rev: pouchRes.rev
-      })];
-      return res;
-    });
-  }
-
-  function getAttachment(type, id, attachmentId, options) {
-    options = options || {};
-    return Promise.resolve().then(function () {
-      return db.getAttachment(serialize(type, id), attachmentId, options);
-    });
-  }
-
-  function save(type, obj) {
-    return Promise.resolve().then(function () {
-      return _save(type, obj);
-    });
-  }
-
-  function find(type, idOrIds) {
-    return Promise.resolve().then(function () {
-      return _find(getTypeInfo(type).singular, idOrIds, new collections.Map());
-    });
-  }
-
-  function _findHasMany(type, belongsToKey, belongsToId, foundObjects) {
-  	var selector = {
-            '_id': {
-                '$gt': makeDocID({type: type}),
-                '$lt': makeDocID({type: type, id: {}})
-            }
-        };
-    selector['data.' + belongsToKey] = belongsToId;
-
-    //only use opts for return ids or whole doc? returning normal documents is not really good
-    return db.find({ selector: selector }).then(function(findRes) {
-    	return _parseRelDocs(type, foundObjects, findRes.docs);
-    });
-  }
-
-  function findHasMany(type, belongsToKey, belongsToId) {
-    return _findHasMany(type, belongsToKey, belongsToId, new collections.Map());
-  }
-
-  function del(type, obj) {
-    return Promise.resolve().then(function () {
-      return _del(type, obj);
-    });
-  }
-
-  function parseDocID(str) {
-    var idx = str.indexOf('_');
-    var type = str.substring(0, idx);
-    var relId = deserialize(str);
-
-    var defaultType = keysToSchemas.get(type);
-    if (!defaultType) {
-      var matchingSchemaTypes = schema.filter(
-        function (schemaType) { return schemaType.documentType === type; });
-      if (matchingSchemaTypes.length > 0) {
-        type = matchingSchemaTypes[0].singular;
-      }
-    }
-
-    return {
-      type: type,
-      id: relId
-    };
-  }
-
-  function makeDocID(obj) {
-    var type = obj.type;
-
-    var typeInfo = keysToSchemas.get(type);
-    if (typeInfo) {
-      type = typeInfo.documentType;
-    }
-
-    return serialize(type, obj.id);
-  }
-
-  db.rel = {
-    save: save,
-    find: find,
-    findHasMany: findHasMany,
-    del: del,
-    getAttachment: getAttachment,
-    putAttachment: putAttachment,
-    removeAttachment: removeAttachment,
-    parseDocID: parseDocID,
-    makeDocID: makeDocID,
-    parseRelDocs: parseRelDocs,
-    isDeleted: isDeleted,
-    uuid: uuid
-  };
-};
-
-/* istanbul ignore next */
-if (typeof window !== 'undefined' && window.PouchDB) {
-  window.PouchDB.plugin(exports);
-}
-
-},{"./collections":1,"./pouch-utils":3,"./uuid":4,"uniq":11}],3:[function(require,module,exports){
-(function (process){
-'use strict';
-
-var Promise = require('pouchdb-promise');
-/* istanbul ignore next */
-exports.once = function (fun) {
-  var called = false;
-  return exports.getArguments(function (args) {
-    if (called) {
-      console.trace();
-      throw new Error('once called  more than once');
-    } else {
-      called = true;
-      fun.apply(this, args);
-    }
-  });
-};
-/* istanbul ignore next */
-exports.getArguments = function (fun) {
-  return function () {
-    var len = arguments.length;
-    var args = new Array(len);
-    var i = -1;
-    while (++i < len) {
-      args[i] = arguments[i];
-    }
-    return fun.call(this, args);
-  };
-};
-/* istanbul ignore next */
-exports.toPromise = function (func) {
-  //create the function we will be returning
-  return exports.getArguments(function (args) {
-    var self = this;
-    var tempCB = (typeof args[args.length - 1] === 'function') ? args.pop() : false;
-    // if the last argument is a function, assume its a callback
-    var usedCB;
-    if (tempCB) {
-      // if it was a callback, create a new callback which calls it,
-      // but do so async so we don't trap any errors
-      usedCB = function (err, resp) {
-        process.nextTick(function () {
-          tempCB(err, resp);
-        });
-      };
-    }
-    var promise = new Promise(function (fulfill, reject) {
-      try {
-        var callback = exports.once(function (err, mesg) {
-          if (err) {
-            reject(err);
-          } else {
-            fulfill(mesg);
-          }
-        });
-        // create a callback for this invocation
-        // apply the function in the orig context
-        args.push(callback);
-        func.apply(self, args);
-      } catch (e) {
-        reject(e);
-      }
-    });
-    // if there is a callback, call it back
-    if (usedCB) {
-      promise.then(function (result) {
-        usedCB(null, result);
-      }, usedCB);
-    }
-    promise.cancel = function () {
-      return this;
-    };
-    return promise;
-  });
-};
-
-// execute some promises in a chain
-exports.series = function (promiseFactories) {
-  var chain = exports.Promise.resolve();
-  var overallRes = new Array(promiseFactories.length);
-  promiseFactories.forEach(function (promiseFactory, i) {
-    chain = chain.then(promiseFactories[i]).then(function (res) {
-      overallRes[i] = res;
-    });
-  });
-  return chain.then(function () {
-    return overallRes;
-  });
-};
-
-exports.inherits = require('inherits');
-exports.Promise = Promise;
-exports.extend = require('pouchdb-extend');
-
-}).call(this,require('_process'))
-},{"_process":10,"inherits":6,"pouchdb-extend":7,"pouchdb-promise":8}],4:[function(require,module,exports){
-"use strict";
-
-// BEGIN Math.uuid.js
-
-/*!
-Math.uuid.js (v1.4)
-http://www.broofa.com
-mailto:robert@broofa.com
-
-Copyright (c) 2010 Robert Kieffer
-Dual licensed under the MIT and GPL licenses.
-*/
-
-/*
- * Generate a random uuid.
- *
- * USAGE: Math.uuid(length, radix)
- *   length - the desired number of characters
- *   radix  - the number of allowable values for each character.
- *
- * EXAMPLES:
- *   // No arguments  - returns RFC4122, version 4 ID
- *   >>> Math.uuid()
- *   "92329D39-6F5C-4520-ABFC-AAB64544E172"
- *
- *   // One argument - returns ID of the specified length
- *   >>> Math.uuid(15)     // 15 character ID (default base=62)
- *   "VcydxgltxrVZSTV"
- *
- *   // Two arguments - returns ID of the specified length, and radix. 
- *   // (Radix must be <= 62)
- *   >>> Math.uuid(8, 2)  // 8 character ID (base=2)
- *   "01001010"
- *   >>> Math.uuid(8, 10) // 8 character ID (base=10)
- *   "47473046"
- *   >>> Math.uuid(8, 16) // 8 character ID (base=16)
- *   "098F4D35"
- */
-var chars = (
-  '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
-  'abcdefghijklmnopqrstuvwxyz'
-).split('');
-function getValue(radix) {
-  return 0 | Math.random() * radix;
-}
-function uuid(len, radix) {
-  radix = radix || chars.length;
-  var out = '';
-  var i = -1;
-
-  /* istanbul ignore next */
-  if (len) {
-    // Compact form
-    while (++i < len) {
-      out += chars[getValue(radix)];
-    }
-    return out;
-  }
-    // rfc4122, version 4 form
-    // Fill in random data.  At i==19 set the high bits of clock sequence as
-    // per rfc4122, sec. 4.1.5
-  while (++i < 36) {
-    switch (i) {
-      case 8:
-      case 13:
-      case 18:
-      case 23:
-        out += '-';
-        break;
-      case 19:
-        out += chars[(getValue(16) & 0x3) | 0x8];
-        break;
-      default:
-        out += chars[getValue(16)];
-    }
-  }
-
-  return out;
-}
-
-
-
-module.exports = uuid;
-
-
-},{}],5:[function(require,module,exports){
-(function (global){
-'use strict';
-var Mutation = global.MutationObserver || global.WebKitMutationObserver;
-
-var scheduleDrain;
-
-{
-  if (Mutation) {
-    var called = 0;
-    var observer = new Mutation(nextTick);
-    var element = global.document.createTextNode('');
-    observer.observe(element, {
-      characterData: true
-    });
-    scheduleDrain = function () {
-      element.data = (called = ++called % 2);
-    };
-  } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {
-    var channel = new global.MessageChannel();
-    channel.port1.onmessage = nextTick;
-    scheduleDrain = function () {
-      channel.port2.postMessage(0);
-    };
-  } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {
-    scheduleDrain = function () {
-
-      // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
-      // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
-      var scriptEl = global.document.createElement('script');
-      scriptEl.onreadystatechange = function () {
-        nextTick();
-
-        scriptEl.onreadystatechange = null;
-        scriptEl.parentNode.removeChild(scriptEl);
-        scriptEl = null;
-      };
-      global.document.documentElement.appendChild(scriptEl);
-    };
-  } else {
-    scheduleDrain = function () {
-      setTimeout(nextTick, 0);
-    };
-  }
-}
-
-var draining;
-var queue = [];
-//named nextTick for less confusing stack traces
-function nextTick() {
-  draining = true;
-  var i, oldQueue;
-  var len = queue.length;
-  while (len) {
-    oldQueue = queue;
-    queue = [];
-    i = -1;
-    while (++i < len) {
-      oldQueue[i]();
-    }
-    len = queue.length;
-  }
-  draining = false;
-}
-
-module.exports = immediate;
-function immediate(task) {
-  if (queue.push(task) === 1 && !draining) {
-    scheduleDrain();
-  }
-}
-
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{}],6:[function(require,module,exports){
-if (typeof Object.create === 'function') {
-  // implementation from standard node.js 'util' module
-  module.exports = function inherits(ctor, superCtor) {
-    ctor.super_ = superCtor
-    ctor.prototype = Object.create(superCtor.prototype, {
-      constructor: {
-        value: ctor,
-        enumerable: false,
-        writable: true,
-        configurable: true
-      }
-    });
-  };
-} else {
-  // old school shim for old browsers
-  module.exports = function inherits(ctor, superCtor) {
-    ctor.super_ = superCtor
-    var TempCtor = function () {}
-    TempCtor.prototype = superCtor.prototype
-    ctor.prototype = new TempCtor()
-    ctor.prototype.constructor = ctor
-  }
-}
-
-},{}],7:[function(require,module,exports){
-"use strict";
-
-// Extends method
-// (taken from http://code.jquery.com/jquery-1.9.0.js)
-// Populate the class2type map
-var class2type = {};
-
-var types = [
-  "Boolean", "Number", "String", "Function", "Array",
-  "Date", "RegExp", "Object", "Error"
-];
-for (var i = 0; i < types.length; i++) {
-  var typename = types[i];
-  class2type["[object " + typename + "]"] = typename.toLowerCase();
-}
-
-var core_toString = class2type.toString;
-var core_hasOwn = class2type.hasOwnProperty;
-
-function type(obj) {
-  if (obj === null) {
-    return String(obj);
-  }
-  return typeof obj === "object" || typeof obj === "function" ?
-    class2type[core_toString.call(obj)] || "object" :
-    typeof obj;
-}
-
-function isWindow(obj) {
-  return obj !== null && obj === obj.window;
-}
-
-function isPlainObject(obj) {
-  // Must be an Object.
-  // Because of IE, we also have to check the presence of
-  // the constructor property.
-  // Make sure that DOM nodes and window objects don't pass through, as well
-  if (!obj || type(obj) !== "object" || obj.nodeType || isWindow(obj)) {
-    return false;
-  }
-
-  try {
-    // Not own constructor property must be Object
-    if (obj.constructor &&
-      !core_hasOwn.call(obj, "constructor") &&
-      !core_hasOwn.call(obj.constructor.prototype, "isPrototypeOf")) {
-      return false;
-    }
-  } catch ( e ) {
-    // IE8,9 Will throw exceptions on certain host objects #9897
-    return false;
-  }
-
-  // Own properties are enumerated firstly, so to speed up,
-  // if last one is own, then all properties are own.
-  var key;
-  for (key in obj) {}
-
-  return key === undefined || core_hasOwn.call(obj, key);
-}
-
-
-function isFunction(obj) {
-  return type(obj) === "function";
-}
-
-var isArray = Array.isArray || function (obj) {
-  return type(obj) === "array";
-};
-
-function extend() {
-  // originally extend() was recursive, but this ended up giving us
-  // "call stack exceeded", so it's been unrolled to use a literal stack
-  // (see https://github.com/pouchdb/pouchdb/issues/2543)
-  var stack = [];
-  var i = -1;
-  var len = arguments.length;
-  var args = new Array(len);
-  while (++i < len) {
-    args[i] = arguments[i];
-  }
-  var container = {};
-  stack.push({args: args, result: {container: container, key: 'key'}});
-  var next;
-  while ((next = stack.pop())) {
-    extendInner(stack, next.args, next.result);
-  }
-  return container.key;
-}
-
-function extendInner(stack, args, result) {
-  var options, name, src, copy, copyIsArray, clone,
-    target = args[0] || {},
-    i = 1,
-    length = args.length,
-    deep = false,
-    numericStringRegex = /\d+/,
-    optionsIsArray;
-
-  // Handle a deep copy situation
-  if (typeof target === "boolean") {
-    deep = target;
-    target = args[1] || {};
-    // skip the boolean and the target
-    i = 2;
-  }
-
-  // Handle case when target is a string or something (possible in deep copy)
-  if (typeof target !== "object" && !isFunction(target)) {
-    target = {};
-  }
-
-  // extend jQuery itself if only one argument is passed
-  if (length === i) {
-    /* jshint validthis: true */
-    target = this;
-    --i;
-  }
-
-  for (; i < length; i++) {
-    // Only deal with non-null/undefined values
-    if ((options = args[i]) != null) {
-      optionsIsArray = isArray(options);
-      // Extend the base object
-      for (name in options) {
-        //if (options.hasOwnProperty(name)) {
-        if (!(name in Object.prototype)) {
-          if (optionsIsArray && !numericStringRegex.test(name)) {
-            continue;
-          }
-
-          src = target[name];
-          copy = options[name];
-
-          // Prevent never-ending loop
-          if (target === copy) {
-            continue;
-          }
-
-          // Recurse if we're merging plain objects or arrays
-          if (deep && copy && (isPlainObject(copy) ||
-              (copyIsArray = isArray(copy)))) {
-            if (copyIsArray) {
-              copyIsArray = false;
-              clone = src && isArray(src) ? src : [];
-
-            } else {
-              clone = src && isPlainObject(src) ? src : {};
-            }
-
-            // Never move original objects, clone them
-            stack.push({
-              args: [deep, clone, copy],
-              result: {
-                container: target,
-                key: name
-              }
-            });
-
-          // Don't bring in undefined values
-          } else if (copy !== undefined) {
-            if (!(isArray(options) && isFunction(copy))) {
-              target[name] = copy;
-            }
-          }
-        }
-      }
-    }
-  }
-
-  // "Return" the modified object by setting the key
-  // on the given container
-  result.container[result.key] = target;
-}
-
-
-module.exports = extend;
-
-
-
-},{}],8:[function(require,module,exports){
-'use strict';
-
-function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
-
-var lie = _interopDefault(require('lie'));
-
-/* istanbul ignore next */
-var PouchPromise = typeof Promise === 'function' ? Promise : lie;
-
-module.exports = PouchPromise;
-
-},{"lie":9}],9:[function(require,module,exports){
-'use strict';
-var immediate = require('immediate');
-
-/* istanbul ignore next */
-function INTERNAL() {}
-
-var handlers = {};
-
-var REJECTED = ['REJECTED'];
-var FULFILLED = ['FULFILLED'];
-var PENDING = ['PENDING'];
-
-module.exports = Promise;
-
-function Promise(resolver) {
-  if (typeof resolver !== 'function') {
-    throw new TypeError('resolver must be a function');
-  }
-  this.state = PENDING;
-  this.queue = [];
-  this.outcome = void 0;
-  if (resolver !== INTERNAL) {
-    safelyResolveThenable(this, resolver);
-  }
-}
-
-Promise.prototype["catch"] = function (onRejected) {
-  return this.then(null, onRejected);
-};
-Promise.prototype.then = function (onFulfilled, onRejected) {
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-    return this.reject(new TypeError('must be an array'));
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-
-  var len = iterable.length;
-  var called = false;
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-    return this.resolve([]);
-  }
-
-  var i = -1;
-  var promise = new this(INTERNAL);
-
-  while (++i < len) {
-    resolver(iterable[i]);
-  }
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-
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-
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-function defaultSetTimout() {
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-}
-function defaultClearTimeout () {
-    throw new Error('clearTimeout has not been defined');
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-    }
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-    }
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-        //normal enviroments in sane situations
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-    }
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-    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
-        cachedSetTimeout = setTimeout;
-        return setTimeout(fun, 0);
-    }
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-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedSetTimeout(fun, 0);
-    } catch(e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
-            return cachedSetTimeout.call(null, fun, 0);
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-            return cachedSetTimeout.call(this, fun, 0);
-        }
-    }
-
-
-}
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-    if (cachedClearTimeout === clearTimeout) {
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-        return clearTimeout(marker);
-    }
-    // if clearTimeout wasn't available but was latter defined
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-        cachedClearTimeout = clearTimeout;
-        return clearTimeout(marker);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedClearTimeout(marker);
-    } catch (e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
-            return cachedClearTimeout.call(null, marker);
-        } catch (e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
-            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
-            return cachedClearTimeout.call(this, marker);
-        }
-    }
-
-
-
-}
-var queue = [];
-var draining = false;
-var currentQueue;
-var queueIndex = -1;
-
-function cleanUpNextTick() {
-    if (!draining || !currentQueue) {
-        return;
-    }
-    draining = false;
-    if (currentQueue.length) {
-        queue = currentQueue.concat(queue);
-    } else {
-        queueIndex = -1;
-    }
-    if (queue.length) {
-        drainQueue();
-    }
-}
-
-function drainQueue() {
-    if (draining) {
-        return;
-    }
-    var timeout = runTimeout(cleanUpNextTick);
-    draining = true;
-
-    var len = queue.length;
-    while(len) {
-        currentQueue = queue;
-        queue = [];
-        while (++queueIndex < len) {
-            if (currentQueue) {
-                currentQueue[queueIndex].run();
-            }
-        }
-        queueIndex = -1;
-        len = queue.length;
-    }
-    currentQueue = null;
-    draining = false;
-    runClearTimeout(timeout);
-}
-
-process.nextTick = function (fun) {
-    var args = new Array(arguments.length - 1);
-    if (arguments.length > 1) {
-        for (var i = 1; i < arguments.length; i++) {
-            args[i - 1] = arguments[i];
-        }
-    }
-    queue.push(new Item(fun, args));
-    if (queue.length === 1 && !draining) {
-        runTimeout(drainQueue);
-    }
-};
-
-// v8 likes predictible objects
-function Item(fun, array) {
-    this.fun = fun;
-    this.array = array;
-}
-Item.prototype.run = function () {
-    this.fun.apply(null, this.array);
-};
-process.title = 'browser';
-process.browser = true;
-process.env = {};
-process.argv = [];
-process.version = ''; // empty string to avoid regexp issues
-process.versions = {};
-
-function noop() {}
-
-process.on = noop;
-process.addListener = noop;
-process.once = noop;
-process.off = noop;
-process.removeListener = noop;
-process.removeAllListeners = noop;
-process.emit = noop;
-process.prependListener = noop;
-process.prependOnceListener = noop;
-
-process.listeners = function (name) { return [] }
-
-process.binding = function (name) {
-    throw new Error('process.binding is not supported');
-};
-
-process.cwd = function () { return '/' };
-process.chdir = function (dir) {
-    throw new Error('process.chdir is not supported');
-};
-process.umask = function() { return 0; };
-
-},{}],11:[function(require,module,exports){
-"use strict"
-
-function unique_pred(list, compare) {
-  var ptr = 1
-    , len = list.length
-    , a=list[0], b=list[0]
-  for(var i=1; i<len; ++i) {
-    b = a
-    a = list[i]
-    if(compare(a, b)) {
-      if(i === ptr) {
-        ptr++
-        continue
-      }
-      list[ptr++] = a
-    }
-  }
-  list.length = ptr
-  return list
-}
-
-function unique_eq(list) {
-  var ptr = 1
-    , len = list.length
-    , a=list[0], b = list[0]
-  for(var i=1; i<len; ++i, b=a) {
-    b = a
-    a = list[i]
-    if(a !== b) {
-      if(i === ptr) {
-        ptr++
-        continue
-      }
-      list[ptr++] = a
-    }
-  }
-  list.length = ptr
-  return list
-}
-
-function unique(list, compare, sorted) {
-  if(list.length === 0) {
-    return list
-  }
-  if(compare) {
-    if(!sorted) {
-      list.sort(compare)
-    }
-    return unique_pred(list, compare)
-  }
-  if(!sorted) {
-    list.sort()
-  }
-  return unique_eq(list)
-}
-
-module.exports = unique
-
-},{}]},{},[2])(2)
-});
\ No newline at end of file
diff --git a/dist/pouchdb.relational-pouch.min.js b/dist/pouchdb.relational-pouch.min.js
deleted file mode 100644
index 49f7781..0000000
--- a/dist/pouchdb.relational-pouch.min.js
+++ /dev/null
@@ -1 +0,0 @@
-!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).RelationalPouch=e()}}(function(){return function i(u,c,s){function a(n,e){if(!c[n]){if(!u[n]){var t="function"==typeof require&&require;if(!e&&t)return t(n,!0);if(f)return f(n,!0);var r=new Error("Cannot find module '"+n+"'");throw r.code="MODULE_NOT_FOUND",r}var o=c[n]={exports:{}};u[n][0].call(o.exports,function(e){var t=u[n][1][e];return a(t||e)},o,o.exports,i,u,c,s)}return c[n].exports}for(var f="function"==typeof require&&require,e=0;e<s.length;e++)a(s[e]);return a}({1:[function(e,t,n){"use strict";function r(){this.store={}}function o(){this.store=new r}n.Map=r,n.Set=o,r.prototype.mangle=function(e){if("string"!=typeof e)throw new TypeError("key must be a string but Got "+e);return"$"+e},r.prototype.unmangle=function(e){return 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n}function w(e){var t=e.indexOf("_"),n=e.charAt(t+1),r=e.substring(t+3);return n===i?parseInt(r,10):r}n.setSchema=function(i){var c=this,u=new v.Map;function o(i,u){var e={};(u=p(!0,{},u)).rev&&(e._rev=u.rev,delete u.rev),u.attachments&&(e._attachments=u.attachments,delete u.attachments);var t=u.id||y();return delete u.id,e._id=g(i.documentType,t),i.relations&&Object.keys(i.relations).forEach(function(e){var t=i.relations[e],n=Object.keys(t)[0];if("belongsTo"===n)u[e]&&void 0!==u[e].id&&(u[e]=u[e].id);else{var r=t[n];if(r.options&&r.options.queryInverse)return void delete u[e];if(u[e]){var o=u[e].map(function(e){return e&&void 0!==e.id?e.id:e});u[e]=o}else u[e]=[]}}),e.data=u,e}function s(e){if(!u.has(e))throw function(e){var t=new Error(e);return t.status=400,t}("unknown type: "+JSON.stringify(e));return u.get(e)}function r(e,t,n){var r=s(e),o={include_docs:!0};return null==t?(o.startkey=g(r.documentType),o.endkey=g(r.documentType,{})):Array.isArray(t)?o.keys=t.map(function(e){return 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o={_id:{$gt:f({type:t}),$lt:f({type:t,id:{}})}};return o["data."+e]=n,c.find({selector:o}).then(function(e){return a(t,r,e.docs)})}function f(e){var t=e.type,n=u.get(t);return n&&(t=n.documentType),g(t,e.id)}i.forEach(function(e){u.set(e.singular,e),u.set(e.plural,e)}),i.forEach(function(e){e.documentType=e.documentType||e.singular}),i.forEach(function(o){if(o.relations){if(!Object.keys(o.relations).length)throw new Error("Invalid relations for: "+o);Object.keys(o.relations).forEach(function(e){var t=o.relations[e];if(1!==Object.keys(t).length)throw new Error("Invalid relationship definition for: "+e);var n=Object.keys(t)[0],r=t[n];if("string"!=typeof r&&(r=r.type),!u.get(r))throw new Error("Unknown entity type: "+r);if("belongsTo"!==n&&"hasMany"!==n)throw new Error("Invalid relationship type for "+e+": "+n)})}}),c.rel={save:function(e,t){return d.resolve().then(function(){return function(e,n){var t,r=s(e);return d.resolve().then(function(){return 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diff --git a/lib/collections.js b/lib/collections.js
deleted file mode 100644
index 43654b0..0000000
--- a/lib/collections.js
+++ /dev/null
@@ -1,74 +0,0 @@
-'use strict';
-exports.Map = LazyMap; // TODO: use ES6 map
-exports.Set = LazySet; // TODO: use ES6 set
-// based on https://github.com/montagejs/collections
-function LazyMap() {
-  this.store = {};
-}
-/* istanbul ignore next */
-LazyMap.prototype.mangle = function (key) {
-  if (typeof key !== "string") {
-    throw new TypeError("key must be a string but Got " + key);
-  }
-  return '$' + key;
-};
-/* istanbul ignore next */
-LazyMap.prototype.unmangle = function (key) {
-  return key.substring(1);
-};
-/* istanbul ignore next */
-LazyMap.prototype.get = function (key) {
-  var mangled = this.mangle(key);
-  if (mangled in this.store) {
-    return this.store[mangled];
-  } else {
-    return void 0;
-  }
-};
-/* istanbul ignore next */
-LazyMap.prototype.set = function (key, value) {
-  var mangled = this.mangle(key);
-  this.store[mangled] = value;
-  return true;
-};
-/* istanbul ignore next */
-LazyMap.prototype.has = function (key) {
-  var mangled = this.mangle(key);
-  return mangled in this.store;
-};
-/* istanbul ignore next */
-LazyMap.prototype.delete = function (key) {
-  var mangled = this.mangle(key);
-  if (mangled in this.store) {
-    delete this.store[mangled];
-    return true;
-  }
-  return false;
-};
-/* istanbul ignore next */
-LazyMap.prototype.forEach = function (cb) {
-  var self = this;
-  var keys = Object.keys(self.store);
-  keys.forEach(function (key) {
-    var value = self.store[key];
-    key = self.unmangle(key);
-    cb(value, key);
-  });
-};
-
-/* istanbul ignore next */
-function LazySet() {
-  this.store = new LazyMap();
-}
-/* istanbul ignore next */
-LazySet.prototype.add = function (key) {
-  return this.store.set(key, true);
-};
-/* istanbul ignore next */
-LazySet.prototype.has = function (key) {
-  return this.store.has(key);
-};
-/* istanbul ignore next */
-LazySet.prototype.delete = function (key) {
-  return this.store.delete(key);
-};
\ No newline at end of file
diff --git a/lib/index.js b/lib/index.js
deleted file mode 100644
index c170ea3..0000000
--- a/lib/index.js
+++ /dev/null
@@ -1,509 +0,0 @@
-'use strict';
-
-var utils = require('./pouch-utils');
-var extend = utils.extend;
-var Promise = utils.Promise;
-var collections = require('./collections');
-var uuid = require('./uuid');
-var uniq = require('uniq');
-
-function createError(str) {
-  var err = new Error(str);
-  err.status = 400;
-  return err;
-}
-
-var MAX_INT_LENGTH = 16; // max int in JS is 9007199254740992
-var TYPE_UNDEF = '0';
-var TYPE_NUM = '1';
-var TYPE_STRING = '2';
-var TYPE_OBJ = '3';
-
-function serialize(type, id) {
-  // simple collation that goes like this:
-  // undefined < numbers < strings < object
-  var res = type.replace('_', '') + '_';
-  if (typeof id === 'number') {
-    // zpad
-    id = id.toString();
-    while (id.length < MAX_INT_LENGTH) {
-      id = '0' + id;
-    }
-    res += TYPE_NUM + '_' + id;
-  } else if (typeof id === 'undefined') {
-    // need lowest possible value
-    res += TYPE_UNDEF;
-  } else if (typeof id === 'object') {
-    // need highest possible value
-    res += TYPE_OBJ;
-  } else { // string
-    res += TYPE_STRING + '_' + id;
-  }
-  return res;
-}
-function deserialize(str) {
-  // should only have to deserialize numbers and strings
-  var idx = str.indexOf('_');
-  var collationType = str.charAt(idx + 1);
-  var id = str.substring(idx + 3);
-  if (collationType === TYPE_NUM) {
-    return parseInt(id, 10);
-  }
-  return id;
-}
-
-exports.setSchema = function (schema) {
-  var db = this;
-
-  var keysToSchemas = new collections.Map();
-  schema.forEach(function (type) {
-    keysToSchemas.set(type.singular, type);
-    keysToSchemas.set(type.plural, type);
-  });
-
-  // set default documentType
-  schema.forEach(function (type) {
-    type.documentType = type.documentType || type.singular;
-  });
-
-  // validate the relations
-  schema.forEach(function (type) {
-    if (type.relations) {
-      if (!Object.keys(type.relations).length) {
-        throw new Error('Invalid relations for: ' + type);
-      }
-      Object.keys(type.relations).forEach(function (field) {
-        var relationDef = type.relations[field];
-        if (Object.keys(relationDef).length !== 1) {
-          throw new Error('Invalid relationship definition for: ' + field);
-        }
-        var relationType = Object.keys(relationDef)[0];
-        var relatedField = relationDef[relationType];
-        if (typeof relatedField !== 'string') {
-          relatedField = relatedField.type;
-        }
-        if (!keysToSchemas.get(relatedField)) {
-          throw new Error('Unknown entity type: ' + relatedField);
-        }
-        if (relationType !== 'belongsTo' && relationType !== 'hasMany') {
-          throw new Error('Invalid relationship type for ' + field + ': ' + relationType);
-        }
-      });
-    }
-  });
-
-  /**
-   * Transform a relational object into a PouchDB doc.
-   */
-  function toRawDoc(typeInfo, obj) {
-    obj = extend(true, {}, obj);
-    var doc = {};
-
-    if (obj.rev) {
-      doc._rev = obj.rev;
-      delete obj.rev;
-    }
-
-    if (obj.attachments) {
-      doc._attachments = obj.attachments;
-      delete obj.attachments;
-    }
-
-    var id = obj.id || uuid();
-    delete obj.id;
-    doc._id = serialize(typeInfo.documentType, id);
-
-    if (typeInfo.relations) {
-      Object.keys(typeInfo.relations).forEach(function (field) {
-        var relationDef = typeInfo.relations[field];
-        var relationType = Object.keys(relationDef)[0];
-
-        if (relationType === 'belongsTo') {
-          if (obj[field] && typeof obj[field].id !== 'undefined') {
-            obj[field] = obj[field].id;
-          }
-        } else { // hasMany
-          var relatedType = relationDef[relationType];
-          if (relatedType.options && relatedType.options.queryInverse) {
-            delete obj[field];
-            return;
-          }
-          if (obj[field]) {
-            var dependents = obj[field].map(function (dependent) {
-              if (dependent && typeof dependent.id !== 'undefined') {
-                return dependent.id;
-              }
-              return dependent;
-            });
-            obj[field] = dependents;
-          } else {
-            obj[field] = [];
-          }
-        }
-      });
-    }
-
-    doc.data = obj;
-
-    return doc;
-  }
-
-  /**
-   * Transform a PouchDB doc into a relational object.
-   */
-  function fromRawDoc(pouchDoc) {
-    var obj = pouchDoc.data;
-    obj.id = deserialize(pouchDoc._id);
-    obj.rev = pouchDoc._rev;
-    if (pouchDoc._attachments) {
-      obj.attachments = pouchDoc._attachments;
-    }
-    return obj;
-  }
-
-  function getTypeInfo(type) {
-    if (!keysToSchemas.has(type)) {
-      throw createError('unknown type: ' + JSON.stringify(type));
-    }
-
-    return keysToSchemas.get(type);
-  }
-
-  function _save(type, obj) {
-    var typeInfo = getTypeInfo(type);
-    var pouchDoc;
-    return Promise.resolve().then(function () {
-      pouchDoc = toRawDoc(typeInfo, obj);
-      return db.put(pouchDoc);
-    }).then(function (pouchRes) {
-      var res = {};
-      res[typeInfo.plural] = [extend(true, obj, {
-        id: deserialize(pouchRes.id),
-        rev: pouchRes.rev
-      })];
-      return res;
-    });
-  }
-
-  function _del(type, obj) {
-    var typeInfo = getTypeInfo(type);
-    var pouchDoc;
-    return Promise.resolve().then(function () {
-      pouchDoc = toRawDoc(typeInfo, obj);
-      pouchDoc = {
-        _id : pouchDoc._id,
-        _rev : pouchDoc._rev,
-        _deleted: true
-      };
-      return db.put(pouchDoc);
-    }).then(function () {
-      return {deleted: true};
-    });
-  }
-
-  function _find(type, idOrIds, foundObjects) {
-    var typeInfo = getTypeInfo(type);
-
-    var opts = {
-      include_docs: true
-    };
-
-    if (typeof idOrIds === 'undefined' || idOrIds === null) {
-      // find everything
-      opts.startkey = serialize(typeInfo.documentType);
-      opts.endkey = serialize(typeInfo.documentType, {});
-    } else if (Array.isArray(idOrIds)) {
-      // find multiple by ids
-      opts.keys = idOrIds.map(function (id) {
-        return serialize(typeInfo.documentType, id);
-      });
-    } else if (typeof idOrIds === 'object') {
-      if (typeof idOrIds.startkey  === 'undefined' || idOrIds.startkey === null) {
-        opts.startkey = serialize(typeInfo.documentType);
-      } else {
-        opts.startkey = serialize(typeInfo.documentType, idOrIds.startkey);
-      }
-      if (typeof idOrIds.endkey  === 'undefined' || idOrIds.endkey === null) {
-        opts.endkey = serialize(typeInfo.documentType, {});
-      } else {
-        opts.endkey = serialize(typeInfo.documentType, idOrIds.endkey);
-      }
-      if (typeof idOrIds.limit !== 'undefined' && idOrIds.limit !== null) {
-        opts.limit = idOrIds.limit;
-      }
-      if (typeof idOrIds.skip !== 'undefined' && idOrIds.skip !== null) {
-        opts.skip = idOrIds.skip;
-      }
-    } else {
-    // find by single id
-      opts.key = serialize(typeInfo.documentType, idOrIds);
-    }
-
-    return db.allDocs(opts).then(_parseAlldocs.bind(db, type, foundObjects));
-  }
-
-  //true = deleted, false = exists, null = not in database
-  function isDeleted(type, id) {
-    var typeInfo = getTypeInfo(type);
-
-    return db.get(serialize(typeInfo.documentType, id))
-      .then(function (doc) { return !!doc._deleted; })
-      .catch(function (err) { return err.reason === "deleted" ? true : null; });
-  }
-
-  function _parseAlldocs(type, foundObjects, pouchRes) {
-  	return _parseRelDocs(type, foundObjects, pouchRes.rows.filter(function (row) {
-      return row.doc && !row.value.deleted;
-    }).map(function (row) {
-      return row.doc;
-    }));
-  }
-
-  function parseRelDocs(type, pouchDocs) {
-  	return _parseRelDocs(type, new collections.Map(), pouchDocs);
-  }
-
-  function _parseRelDocs(type, foundObjects, pouchDocs) {
-  	var typeInfo = getTypeInfo(type);
-
-  	if (!foundObjects.has(type)) {
-      foundObjects.set(type, new collections.Map());
-    }
-
-  	return Promise.resolve().then(function() {
-      var tasks = pouchDocs.map(function (doc) {
-        var obj = fromRawDoc(doc);
-
-        foundObjects.get(type).set(JSON.stringify(obj.id), obj);
-
-        // fetch all relations
-        var subTasks = [];
-        Object.keys(typeInfo.relations || {}).forEach(function (field) {
-          var relationDef = typeInfo.relations[field];
-          var relationType = Object.keys(relationDef)[0];
-          var relatedType = relationDef[relationType];
-          var relationOptions = {};
-          if (typeof relatedType !== 'string') {
-            relationOptions = relatedType.options || {};
-            if (relationOptions.async) {
-              return;
-            }
-            if (relationOptions.queryInverse) {
-              delete obj[field];
-            }
-            relatedType = relatedType.type;
-          }
-          if (relationType === 'belongsTo') {
-            var relatedId = obj[field];
-            if (typeof relatedId !== 'undefined') {
-              subTasks.push(Promise.resolve().then(function () {
-
-                // short-circuit if it's already in the foundObjects
-                // else we could get caught in an infinite loop
-                if (foundObjects.has(relatedType) &&
-                    foundObjects.get(relatedType).has(JSON.stringify(relatedId))) {
-                  return;
-                }
-
-                // signal that we need to fetch it
-                return {
-                  relatedType: relatedType,
-                  relatedIds: [relatedId]
-                };
-              }));
-            }
-          } else { // hasMany
-            if (relationOptions.queryInverse) {
-              subTasks.push(_findHasMany(relatedType, relationOptions.queryInverse,
-                                         obj.id, foundObjects)
-                            .then(function () { return; }));
-              return;
-            }
-
-            var relatedIds = extend(true, [], obj[field]);
-            if (typeof relatedIds !== 'undefined' && relatedIds.length) {
-              subTasks.push(Promise.resolve().then(function () {
-
-                // filter out all ids that are already in the foundObjects
-                for (var i = relatedIds.length - 1; i >= 0; i--) {
-                  var relatedId = relatedIds[i];
-                  if (foundObjects.has(relatedType) &&
-                      foundObjects.get(relatedType).has(JSON.stringify(relatedId))) {
-                    delete relatedIds[i];
-                  }
-                }
-                relatedIds = relatedIds.filter(function (relatedId) {
-                  return typeof relatedId !== 'undefined';
-                });
-
-                // just return the ids and the types. We'll find them all
-                // in a single bulk operation in order to minimize HTTP requests
-                if (relatedIds.length) {
-                  return {
-                    relatedType: relatedType,
-                    relatedIds: relatedIds
-                  };
-                }
-              }));
-            }
-          }
-        });
-        return Promise.all(subTasks);
-      });
-      return Promise.all(tasks);
-    }).then(function (listsOfFetchTasks) {
-      // fetch in as few http requests as possible
-      var typesToIds = {};
-      listsOfFetchTasks.forEach(function (fetchTasks) {
-        fetchTasks.forEach(function (fetchTask) {
-          if (!fetchTask) {
-            return;
-          }
-          typesToIds[fetchTask.relatedType] =
-            (typesToIds[fetchTask.relatedType] || []).concat(fetchTask.relatedIds);
-        });
-      });
-
-      return utils.series(Object.keys(typesToIds).map(function (relatedType) {
-        var relatedIds = uniq(typesToIds[relatedType]);
-        return function () {return _find(relatedType, relatedIds, foundObjects); };
-      })).then(function () {
-        var res = {};
-        foundObjects.forEach(function (found, type) {
-          var typeInfo = getTypeInfo(type);
-          var list = res[typeInfo.plural] = [];
-          found.forEach(function (obj) {
-            list.push(obj);
-          });
-          //list.sort(lexCompare);
-        });
-        return res;
-      });
-    });
-  }
-
-  function putAttachment(type, obj, attachmentId, attachment, attachmentType) {
-    var dbDocId = serialize(type, obj.id);
-    var typeInfo = getTypeInfo(type);
-    return Promise.resolve().then(function () {
-      return db.putAttachment(dbDocId, attachmentId, obj.rev, attachment, attachmentType);
-    }).then(function (pouchRes) {
-      var res = {};
-      res[typeInfo.plural] = [extend(true, obj, {
-        id: deserialize(pouchRes.id),
-        rev: pouchRes.rev
-      })];
-      return res;
-    });
-  }
-
-  function removeAttachment(type, obj, attachmentId) {
-    var dbDocId = serialize(type, obj.id);
-    var typeInfo = getTypeInfo(type);
-    return Promise.resolve().then(function () {
-      return db.removeAttachment(dbDocId, attachmentId, obj.rev);
-    }).then(function (pouchRes) {
-      var res = {};
-      res[typeInfo.plural] = [extend(true, obj, {
-        id: deserialize(pouchRes.id),
-        rev: pouchRes.rev
-      })];
-      return res;
-    });
-  }
-
-  function getAttachment(type, id, attachmentId, options) {
-    options = options || {};
-    return Promise.resolve().then(function () {
-      return db.getAttachment(serialize(type, id), attachmentId, options);
-    });
-  }
-
-  function save(type, obj) {
-    return Promise.resolve().then(function () {
-      return _save(type, obj);
-    });
-  }
-
-  function find(type, idOrIds) {
-    return Promise.resolve().then(function () {
-      return _find(getTypeInfo(type).singular, idOrIds, new collections.Map());
-    });
-  }
-
-  function _findHasMany(type, belongsToKey, belongsToId, foundObjects) {
-  	var selector = {
-            '_id': {
-                '$gt': makeDocID({type: type}),
-                '$lt': makeDocID({type: type, id: {}}),
-            },
-        };
-    selector['data.' + belongsToKey] = belongsToId;
-
-    //only use opts for return ids or whole doc? returning normal documents is not really good
-    return db.find({ selector: selector }).then(function(findRes) {
-    	return _parseRelDocs(type, foundObjects, findRes.docs);
-    });
-  }
-
-  function findHasMany(type, belongsToKey, belongsToId) {
-    return _findHasMany(type, belongsToKey, belongsToId, new collections.Map());
-  }
-
-  function del(type, obj) {
-    return Promise.resolve().then(function () {
-      return _del(type, obj);
-    });
-  }
-
-  function parseDocID(str) {
-    var idx = str.indexOf('_');
-    var type = str.substring(0, idx);
-    var relId = deserialize(str);
-
-    var defaultType = keysToSchemas.get(type);
-    if (!defaultType) {
-      var matchingSchemaTypes = schema.filter(
-        function (schemaType) { return schemaType.documentType === type; });
-      if (matchingSchemaTypes.length > 0) {
-        type = matchingSchemaTypes[0].singular;
-      }
-    }
-
-    return {
-      type: type,
-      id: relId
-    };
-  }
-
-  function makeDocID(obj) {
-    var type = obj.type;
-
-    var typeInfo = keysToSchemas.get(type);
-    if (typeInfo) {
-      type = typeInfo.documentType;
-    }
-
-    return serialize(type, obj.id);
-  }
-
-  db.rel = {
-    save: save,
-    find: find,
-    findHasMany: findHasMany,
-    del: del,
-    getAttachment: getAttachment,
-    putAttachment: putAttachment,
-    removeAttachment: removeAttachment,
-    parseDocID: parseDocID,
-    makeDocID: makeDocID,
-    parseRelDocs: parseRelDocs,
-    isDeleted: isDeleted,
-    uuid: uuid,
-  };
-};
-
-/* istanbul ignore next */
-if (typeof window !== 'undefined' && window.PouchDB) {
-  window.PouchDB.plugin(exports);
-}
diff --git a/lib/pouch-utils.js b/lib/pouch-utils.js
deleted file mode 100644
index 021b8cb..0000000
--- a/lib/pouch-utils.js
+++ /dev/null
@@ -1,92 +0,0 @@
-'use strict';
-
-var Promise = require('pouchdb-promise');
-/* istanbul ignore next */
-exports.once = function (fun) {
-  var called = false;
-  return exports.getArguments(function (args) {
-    if (called) {
-      console.trace();
-      throw new Error('once called  more than once');
-    } else {
-      called = true;
-      fun.apply(this, args);
-    }
-  });
-};
-/* istanbul ignore next */
-exports.getArguments = function (fun) {
-  return function () {
-    var len = arguments.length;
-    var args = new Array(len);
-    var i = -1;
-    while (++i < len) {
-      args[i] = arguments[i];
-    }
-    return fun.call(this, args);
-  };
-};
-/* istanbul ignore next */
-exports.toPromise = function (func) {
-  //create the function we will be returning
-  return exports.getArguments(function (args) {
-    var self = this;
-    var tempCB = (typeof args[args.length - 1] === 'function') ? args.pop() : false;
-    // if the last argument is a function, assume its a callback
-    var usedCB;
-    if (tempCB) {
-      // if it was a callback, create a new callback which calls it,
-      // but do so async so we don't trap any errors
-      usedCB = function (err, resp) {
-        process.nextTick(function () {
-          tempCB(err, resp);
-        });
-      };
-    }
-    var promise = new Promise(function (fulfill, reject) {
-      try {
-        var callback = exports.once(function (err, mesg) {
-          if (err) {
-            reject(err);
-          } else {
-            fulfill(mesg);
-          }
-        });
-        // create a callback for this invocation
-        // apply the function in the orig context
-        args.push(callback);
-        func.apply(self, args);
-      } catch (e) {
-        reject(e);
-      }
-    });
-    // if there is a callback, call it back
-    if (usedCB) {
-      promise.then(function (result) {
-        usedCB(null, result);
-      }, usedCB);
-    }
-    promise.cancel = function () {
-      return this;
-    };
-    return promise;
-  });
-};
-
-// execute some promises in a chain
-exports.series = function (promiseFactories) {
-  var chain = exports.Promise.resolve();
-  var overallRes = new Array(promiseFactories.length);
-  promiseFactories.forEach(function (promiseFactory, i) {
-    chain = chain.then(promiseFactories[i]).then(function (res) {
-      overallRes[i] = res;
-    });
-  });
-  return chain.then(function () {
-    return overallRes;
-  });
-};
-
-exports.inherits = require('inherits');
-exports.Promise = Promise;
-exports.extend = require('pouchdb-extend');
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..e88feca
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,10062 @@
+{
+  "name": "relational-pouch",
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+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
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+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.8.3"
+      }
+    },
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+      "dev": true,
+      "requires": {
+        "browserslist": "^4.8.5",
+        "invariant": "^2.2.4",
+        "semver": "^5.5.0"
+      }
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+      "version": "7.8.4",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.8.4.tgz",
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+        "@babel/template": "^7.8.3",
+        "@babel/traverse": "^7.8.4",
+        "@babel/types": "^7.8.3",
+        "convert-source-map": "^1.7.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.1",
+        "json5": "^2.1.0",
+        "lodash": "^4.17.13",
+        "resolve": "^1.3.2",
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+          "dev": true
+        },
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+          "version": "7.8.4",
+          "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.8.4.tgz",
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+          "dev": true,
+          "requires": {
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+            "@babel/generator": "^7.8.4",
+            "@babel/helper-function-name": "^7.8.3",
+            "@babel/helper-split-export-declaration": "^7.8.3",
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+            "@babel/types": "^7.8.3",
+            "debug": "^4.1.0",
+            "globals": "^11.1.0",
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+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
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+          "dev": true,
+          "requires": {
+            "minimist": "^1.2.0"
+          }
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+          "version": "1.2.0",
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+          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
+          "dev": true
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+        "ms": {
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
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+          "dev": true
+        }
+      }
+    },
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+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.8.3.tgz",
+      "integrity": "sha512-WjoPk8hRpDRqqzRpvaR8/gDUPkrnOOeuT2m8cNICJtZH6mwaCo3v0OKMI7Y6SM1pBtyijnLtAL0HDi41pf41ug==",
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+      "requires": {
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+        "jsesc": "^2.5.1",
+        "lodash": "^4.17.13",
+        "source-map": "^0.5.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "dev": true
+        }
+      }
+    },
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+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.8.3.tgz",
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+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-builder-binary-assignment-operator-visitor": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.8.3.tgz",
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+      "dev": true,
+      "requires": {
+        "@babel/helper-explode-assignable-expression": "^7.8.3",
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-call-delegate": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-call-delegate/-/helper-call-delegate-7.8.3.tgz",
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+      "dev": true,
+      "requires": {
+        "@babel/helper-hoist-variables": "^7.8.3",
+        "@babel/traverse": "^7.8.3",
+        "@babel/types": "^7.8.3"
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+      "requires": {
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+        "browserslist": "^4.8.5",
+        "invariant": "^2.2.4",
+        "levenary": "^1.1.1",
+        "semver": "^5.5.0"
+      }
+    },
+    "@babel/helper-create-regexp-features-plugin": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.8.3.tgz",
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+      "dev": true,
+      "requires": {
+        "@babel/helper-regex": "^7.8.3",
+        "regexpu-core": "^4.6.0"
+      }
+    },
+    "@babel/helper-define-map": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.8.3.tgz",
+      "integrity": "sha512-PoeBYtxoZGtct3md6xZOCWPcKuMuk3IHhgxsRRNtnNShebf4C8YonTSblsK4tvDbm+eJAw2HAPOfCr+Q/YRG/g==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-function-name": "^7.8.3",
+        "@babel/types": "^7.8.3",
+        "lodash": "^4.17.13"
+      }
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+    "@babel/helper-explode-assignable-expression": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-explode-assignable-expression/-/helper-explode-assignable-expression-7.8.3.tgz",
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+      "dev": true,
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+}
diff --git a/package.json b/package.json
index f6446ee..cbe7c34 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,11 @@
 {
   "name": "relational-pouch",
-  "version": "3.2.0",
+  "version": "4.0.0",
   "description": "PouchDB, relational style",
-  "main": "lib/index.js",
+  "main": "dist/pouchdb.relational-pouch.node.js",
+  "jsnext:main": "lib/index.js",
+  "module": "lib/index.js",
+  "types": "lib/index.d.ts",
   "repository": {
     "type": "git",
     "url": "git://github.com/pouchdb-community/relational-pouch.git"
@@ -21,48 +24,68 @@
     "url": "https://github.com/pouchdb-community/relational-pouch/issues"
   },
   "scripts": {
-    "test-node": "istanbul test ./node_modules/mocha/bin/_mocha test/test.js",
+    "test-node": "webpack --config webpack.test.node.config.js && nyc ./node_modules/mocha/bin/_mocha test/test-node.js",
     "test-browser": "node ./bin/test-browser.js",
-    "jshint": "jshint -c .jshintrc lib test/test.js",
-    "test": "npm run jshint && bash ./bin/run-test.sh",
-    "build": "mkdirp dist && browserify -t es3ify -s RelationalPouch lib/index.js -o dist/pouchdb.relational-pouch.js && npm run min",
-    "min": "uglifyjs dist/pouchdb.relational-pouch.js -mc > dist/pouchdb.relational-pouch.min.js",
-    "dev": "browserify test/test.js > test/test-bundle.js && npm run dev-server",
-    "dev-server": "node ./bin/dev-server.js",
-    "coverage": "npm test --coverage && istanbul check-coverage --lines 100 --function 100 --statements 100 --branches 100"
+    "lint": "eslint --ext .js,.ts src test/test.ts",
+    "test": "npm run lint && bash ./bin/run-test.sh",
+    "build": "tsc && webpack --mode=production",
+    "tsc": "tsc --build tsconfig.json",
+    "dev": "node ./bin/dev-server.js",
+    "coverage": "npm test --coverage && nyc check-coverage --lines 100 --function 100 --statements 100 --branches 100",
+    "prepare": "npm run build"
   },
   "dependencies": {
-    "argsarray": "0.0.1",
-    "es3ify": "^0.2.2",
-    "inherits": "~2.0.3",
-    "lie": "^3.3.0",
-    "pouchdb-extend": "^0.1.2",
-    "pouchdb-promise": "^6.4.3",
     "uniq": "^1.0.1"
   },
   "peerDependencies": {
-    "pouchdb-find": "^7.0.0"
+    "pouchdb-find": "^7.1.0"
   },
   "devDependencies": {
-    "blob-util": "^1.3.0",
-    "bluebird": "^3.5.4",
-    "browserify": "^15.2.0",
+    "@babel/core": "^7.8.4",
+    "@babel/preset-env": "^7.8.4",
+    "@babel/register": "^7.8.3",
+    "@types/chai": "^4.2.8",
+    "@types/chai-as-promised": "^7.1.2",
+    "@types/mocha": "^7.0.1",
+    "@types/node": "^13.7.0",
+    "@types/pouchdb-adapter-http": "^6.1.3",
+    "@types/pouchdb-adapter-memory": "^6.1.3",
+    "@types/pouchdb-core": "^7.0.5",
+    "@types/pouchdb-find": "^6.3.4",
+    "@types/pouchdb-mapreduce": "^6.1.4",
+    "@types/uniq": "0.0.27",
+    "@typescript-eslint/eslint-plugin": "^2.19.0",
+    "@typescript-eslint/parser": "^2.19.0",
+    "acorn": "^6.4.0",
+    "babel-loader": "^8.0.6",
+    "babel-plugin-istanbul": "^6.0.0",
+    "blob-util": "^2.0.2",
     "chai": "~3.5.0",
     "chai-as-promised": "~5.3.0",
-    "http-server": "~0.10.0",
-    "istanbul": "^0.4.5",
-    "jshint": "2.9.5",
+    "core-js": "^3.6.4",
+    "eslint": "^6.8.0",
+    "eslint-loader": "^3.0.3",
+    "eslint-plugin-promise": "^4.2.1",
+    "fork-ts-checker-webpack-plugin": "^4.0.3",
+    "http-server": "~0.12.0",
+    "jshint": "2.11.0",
+    "mkdirp": "^0.5.1",
     "mocha": "~4.1.0",
-    "phantomjs-prebuilt": "^2.1.16",
-    "pouchdb-find": "^7.0.0",
-    "pouchdb-memory": "^6.0.0",
+    "nyc": "^15.0.0",
+    "pouchdb-adapter-http": "^7.1.1",
+    "pouchdb-adapter-memory": "^7.1.0",
+    "pouchdb-core": "^7.1.1",
+    "pouchdb-find": "^7.1.0",
+    "pouchdb-mapreduce": "^7.1.1",
+    "regenerator-runtime": "^0.13.3",
     "request": "^2.88.0",
     "sauce-connect-launcher": "1.2.6",
     "selenium-standalone": "6.16.0",
-    "uglify-js": "^3.5.6",
-    "watchify": "~3.9.0",
-    "wd": "1.11.2",
-    "mkdirp": "^0.5.1"
+    "ts-loader": "^6.2.1",
+    "typescript": "^3.7.5",
+    "wd": "^1.12.1",
+    "webpack": "^4.41.5",
+    "webpack-cli": "^3.3.10"
   },
   "files": [
     "lib",
diff --git a/src/browser.ts b/src/browser.ts
new file mode 100644
index 0000000..2d0dece
--- /dev/null
+++ b/src/browser.ts
@@ -0,0 +1,3 @@
+import rel from './index';
+
+PouchDB.plugin(rel);
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..82e45f5
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,492 @@
+
+import uuid from './uuid';
+import uniq from 'uniq';
+
+type RelDB = ReturnType<typeof createRel>;
+
+function createError(str) {
+  let err:any = new Error(str);
+  err.status = 400;
+  return err;
+}
+
+const MAX_INT_LENGTH = 16; // max int in JS is 9007199254740992
+const TYPE_UNDEF = '0';
+const TYPE_NUM = '1';
+const TYPE_STRING = '2';
+const TYPE_OBJ = '3';
+
+function serialize(type, id = undefined) {
+  // simple collation that goes like this:
+  // undefined < numbers < strings < object
+  let res = type.replace('_', '') + '_';
+  if (typeof id === 'number') {
+    // zpad
+    id = id.toString();
+    while (id.length < MAX_INT_LENGTH) {
+      id = '0' + id;
+    }
+    res += TYPE_NUM + '_' + id;
+  } else if (typeof id === 'undefined') {
+    // need lowest possible value
+    res += TYPE_UNDEF;
+  } else if (typeof id === 'object') {
+    // need highest possible value
+    res += TYPE_OBJ;
+  } else { // string
+    res += TYPE_STRING + '_' + id;
+  }
+  return res;
+}
+function deserialize(str) {
+  // should only have to deserialize numbers and strings
+  let idx = str.indexOf('_');
+  let collationType = str.charAt(idx + 1);
+  let id = str.substring(idx + 3);
+  if (collationType === TYPE_NUM) {
+    return parseInt(id, 10);
+  }
+  return id;
+}
+
+function setSchema<T extends {} = {}>(this: PouchDB.Database<T>, schema) {
+  let db = this as PouchDB.RelDatabase<T>;// & {rel:any} 
+
+  let keysToSchemas = new Map();
+  schema.forEach(function (type) {
+    keysToSchemas.set(type.singular, type);
+    keysToSchemas.set(type.plural, type);
+  });
+
+  // set default documentType
+  schema.forEach(function (type) {
+    type.documentType = type.documentType || type.singular;
+  });
+
+  // validate the relations
+  schema.forEach(function (type) {
+    if (type.relations) {
+      if (!Object.keys(type.relations).length) {
+        throw new Error('Invalid relations for: ' + type);
+      }
+      Object.keys(type.relations).forEach(function (field) {
+        let relationDef = type.relations[field];
+        if (Object.keys(relationDef).length !== 1) {
+          throw new Error('Invalid relationship definition for: ' + field);
+        }
+        let relationType = Object.keys(relationDef)[0];
+        let relatedField = relationDef[relationType];
+        if (typeof relatedField !== 'string') {
+          relatedField = relatedField.type;
+        }
+        if (!keysToSchemas.get(relatedField)) {
+          throw new Error('Unknown entity type: ' + relatedField);
+        }
+        if (relationType !== 'belongsTo' && relationType !== 'hasMany') {
+          throw new Error('Invalid relationship type for ' + field + ': ' + relationType);
+        }
+      });
+    }
+  });
+  
+  db.rel = createRel(db as PouchDB.Database<T>, keysToSchemas, schema);
+  
+  return db;
+}
+
+function createRel(db:PouchDB.Database, keysToSchemas:any, schema:any) {
+  /**
+   * Transform a relational object into a PouchDB doc.
+   */
+  function toRawDoc(typeInfo, obj) {
+    obj = Object.assign({}, obj);
+    let doc:any = {};
+
+    if (obj.rev) {
+      doc._rev = obj.rev;
+      delete obj.rev;
+    }
+
+    if (obj.attachments) {
+      doc._attachments = obj.attachments;
+      delete obj.attachments;
+    }
+
+    let id = obj.id || uuid();
+    delete obj.id;
+    doc._id = serialize(typeInfo.documentType, id);
+
+    if (typeInfo.relations) {
+      Object.keys(typeInfo.relations).forEach(function (field) {
+        let relationDef = typeInfo.relations[field];
+        let relationType = Object.keys(relationDef)[0];
+
+        if (relationType === 'belongsTo') {
+          if (obj[field] && typeof obj[field].id !== 'undefined') {
+            obj[field] = obj[field].id;
+          }
+        } else { // hasMany
+          let relatedType = relationDef[relationType];
+          if (relatedType.options && relatedType.options.queryInverse) {
+            delete obj[field];
+            return;
+          }
+          if (obj[field]) {
+            let dependents = obj[field].map(function (dependent) {
+              if (dependent && typeof dependent.id !== 'undefined') {
+                return dependent.id;
+              }
+              return dependent;
+            });
+            obj[field] = dependents;
+          } else {
+            obj[field] = [];
+          }
+        }
+      });
+    }
+
+    doc.data = obj;
+
+    return doc;
+  }
+
+  /**
+   * Transform a PouchDB doc into a relational object.
+   */
+  function fromRawDoc(pouchDoc) {
+    let obj = pouchDoc.data;
+    obj.id = deserialize(pouchDoc._id);
+    obj.rev = pouchDoc._rev;
+    if (pouchDoc._attachments) {
+      obj.attachments = pouchDoc._attachments;
+    }
+    return obj;
+  }
+
+  function getTypeInfo(type) {
+    if (!keysToSchemas.has(type)) {
+      throw createError('unknown type: ' + JSON.stringify(type));
+    }
+
+    return keysToSchemas.get(type);
+  }
+
+  async function _save(type, obj) {
+    let typeInfo = getTypeInfo(type);
+    let pouchDoc = toRawDoc(typeInfo, obj);
+    let pouchRes = await db.put(pouchDoc);
+    let res = {
+      id: deserialize(pouchRes.id),
+      rev: pouchRes.rev
+    };
+    return res;
+  }
+
+  async function _del(type, obj) {
+    let typeInfo = getTypeInfo(type);
+    let pouchDoc = toRawDoc(typeInfo, obj);
+    //TODO: only map id + rev, not relationships or extra option to only set _deleted to support filtered replication
+    pouchDoc = {
+      _id : pouchDoc._id,
+      _rev : pouchDoc._rev,
+      _deleted: true
+    };
+    await db.put(pouchDoc);
+    
+    return {deleted: true};
+  }
+
+  async function _find(type, idOrIds, foundObjects) {
+    let typeInfo = getTypeInfo(type);
+
+    let opts:any = {
+      include_docs: true
+    };
+
+    if (typeof idOrIds === 'undefined' || idOrIds === null) {
+      // find everything
+      opts.startkey = serialize(typeInfo.documentType);
+      opts.endkey = serialize(typeInfo.documentType, {});
+    } else if (Array.isArray(idOrIds)) {
+      // find multiple by ids
+      opts.keys = idOrIds.map(function (id) {
+        return serialize(typeInfo.documentType, id);
+      });
+    } else if (typeof idOrIds === 'object') {
+      if (typeof idOrIds.startkey  === 'undefined' || idOrIds.startkey === null) {
+        opts.startkey = serialize(typeInfo.documentType);
+      } else {
+        opts.startkey = serialize(typeInfo.documentType, idOrIds.startkey);
+      }
+      if (typeof idOrIds.endkey  === 'undefined' || idOrIds.endkey === null) {
+        opts.endkey = serialize(typeInfo.documentType, {});
+      } else {
+        opts.endkey = serialize(typeInfo.documentType, idOrIds.endkey);
+      }
+      if (typeof idOrIds.limit !== 'undefined' && idOrIds.limit !== null) {
+        opts.limit = idOrIds.limit;
+      }
+      if (typeof idOrIds.skip !== 'undefined' && idOrIds.skip !== null) {
+        opts.skip = idOrIds.skip;
+      }
+    } else {
+    // find by single id
+      opts.key = serialize(typeInfo.documentType, idOrIds);
+    }
+
+    let allDocs = await db.allDocs(opts);
+    
+    return _parseAlldocs(type, foundObjects, allDocs);
+  }
+
+  //true = deleted, false = exists, null = not in database
+  async function isDeleted(type, id) {
+    let typeInfo = getTypeInfo(type);
+
+    try {
+      let doc = await db.get(serialize(typeInfo.documentType, id));
+      return false;
+    }
+    catch (err) {
+      return err.reason === "deleted" ? true : null;
+    }
+  }
+
+  function _parseAlldocs(type, foundObjects, pouchRes) {
+    return _parseRelDocs(type, foundObjects, pouchRes.rows.filter(function (row) {
+      return row.doc && !row.value.deleted;
+    }).map(function (row) {
+      return row.doc;
+    }));
+  }
+
+  function parseRelDocs(type, pouchDocs) {
+    return _parseRelDocs(type, new Map(), pouchDocs);
+  }
+
+  async function _parseRelDocs(type, foundObjects, pouchDocs) {
+    let typeInfo = getTypeInfo(type);
+
+    if (!foundObjects.has(type)) {
+      foundObjects.set(type, new Map());
+    }
+    
+    let listsOfFetchTasks = [];
+    
+    for (let doc of pouchDocs) {
+      let obj = fromRawDoc(doc);
+
+      foundObjects.get(type).set(JSON.stringify(obj.id), obj);
+
+      // fetch all relations
+      
+      for (let field of Object.keys(typeInfo.relations || {})) {
+        let relationDef = typeInfo.relations[field];
+        let relationType = Object.keys(relationDef)[0];
+        let relatedType = relationDef[relationType];
+        let relationOptions: any = {};
+        if (typeof relatedType !== 'string') {
+          relationOptions = relatedType.options || {};
+          if (relationOptions.async) {
+            continue;
+          }
+          if (relationOptions.queryInverse) {
+            delete obj[field];
+          }
+          relatedType = relatedType.type;
+        }
+        if (relationType === 'belongsTo') {
+          let relatedId = obj[field];
+          if (typeof relatedId !== 'undefined') {
+            listsOfFetchTasks.push({
+                relatedType: relatedType,
+                relatedIds: [relatedId]
+              });
+          }
+        } else { // hasMany
+          if (relationOptions.queryInverse) {
+            //TODO: postpone this until next run, to filter out more objects that are already loaded
+            await _findHasMany(relatedType, relationOptions.queryInverse,
+                                       obj.id, foundObjects);
+            continue;
+          }
+
+          /* istanbul ignore next */
+          let relatedIds = (obj[field] || []).filter(function (relatedId) {
+            return typeof relatedId !== 'undefined';
+          });
+          
+          if (relatedIds.length) {
+            listsOfFetchTasks.push({
+              relatedType: relatedType,
+              relatedIds: relatedIds
+            });
+          }
+        }
+      }
+      
+      //listsOfFetchTasks = listsOfFetchTasks.concat(docRelations);
+    }
+    
+    // fetch in as few http requests as possible
+    let typesToIds = {};
+    listsOfFetchTasks.forEach(function (fetchTask) {
+      /* istanbul ignore next */
+      if (!fetchTask) {
+        return;
+      }
+      
+      let relatedType = fetchTask.relatedType;
+      let relatedIds = fetchTask.relatedIds;
+      
+      for (let i = relatedIds.length - 1; i >= 0; i--) {
+        let relatedId = relatedIds[i];
+        if (foundObjects.has(relatedType) &&
+            foundObjects.get(relatedType).has(JSON.stringify(relatedId))) {
+          delete relatedIds[i];
+          continue;
+        }
+      }
+      typesToIds[relatedType] =
+        (typesToIds[relatedType] || []).concat(fetchTask.relatedIds.filter(Boolean));
+    });
+
+    for (let relatedType of Object.keys(typesToIds)) {
+      let relatedIds = uniq(typesToIds[relatedType]);
+      if (relatedIds.length > 0)
+        await _find(relatedType, relatedIds, foundObjects);
+    }
+
+    let res:any = {};
+    foundObjects.forEach(function (found, type) {
+      let typeInfo = getTypeInfo(type);
+      let list = res[typeInfo.plural] = [];
+      found.forEach(function (obj) {
+        list.push(obj);
+      });
+      //list.sort(lexCompare);
+    });
+    return res;
+  }
+
+  async function putAttachment(type, obj, attachmentId, attachment, attachmentType) {
+    let dbDocId = serialize(type, obj.id);
+    let typeInfo = getTypeInfo(type);
+    let pouchRes = await db.putAttachment(dbDocId, attachmentId, obj.rev, attachment, attachmentType);
+    let res = pouchRes.rev;
+    return res;
+  }
+
+  async function removeAttachment(type, obj, attachmentId) {
+    let dbDocId = serialize(type, obj.id);
+    let typeInfo = getTypeInfo(type);
+    let pouchRes = await db.removeAttachment(dbDocId, attachmentId, obj.rev);
+    let res = pouchRes.rev;
+    return res;
+  }
+
+  async function getAttachment(type, id, attachmentId, options = undefined) {
+    options = options || {};
+    return db.getAttachment(serialize(type, id), attachmentId, options);
+  }
+
+  async function save(type, obj) {
+    return _save(type, obj);
+  }
+
+  function find(type, idOrIds = undefined) {
+    return _find(getTypeInfo(type).singular, idOrIds, new Map());
+  }
+
+  async function _findHasMany(type, belongsToKey, belongsToId, foundObjects) {
+    let selector = {
+            '_id': {
+                '$gt': makeDocID({type: type}),
+                '$lt': makeDocID({type: type, id: {}}),
+            },
+        };
+    selector['data.' + belongsToKey] = belongsToId;
+
+    //only use opts for return ids or whole doc? returning normal documents is not really good
+    let findRes = await db.find({ selector: selector });
+    return _parseRelDocs(type, foundObjects, findRes.docs);
+  }
+
+  function findHasMany(type, belongsToKey, belongsToId) {
+    return _findHasMany(type, belongsToKey, belongsToId, new Map());
+  }
+
+  function del(type, obj) {
+    return _del(type, obj);
+  }
+
+  function parseDocID(str) {
+    let idx = str.indexOf('_');
+    let type = str.substring(0, idx);
+    let relId = deserialize(str);
+
+    let defaultType = keysToSchemas.get(type);
+    if (!defaultType) {
+      let matchingSchemaTypes = schema.filter(
+        function (schemaType) { return schemaType.documentType === type; });
+      if (matchingSchemaTypes.length > 0) {
+        type = matchingSchemaTypes[0].singular;
+      }
+    }
+
+    return {
+      type: type,
+      id: relId
+    };
+  }
+
+  function makeDocID(obj) {
+    let type = obj.type;
+
+    let typeInfo = keysToSchemas.get(type);
+    if (typeInfo) {
+      type = typeInfo.documentType;
+    }
+
+    return serialize(type, obj.id);
+  }
+
+  return {
+    save: save,
+    find: find,
+    findHasMany: findHasMany,
+    del: del,
+    getAttachment: getAttachment,
+    putAttachment: putAttachment,
+    removeAttachment: removeAttachment,
+    parseDocID: parseDocID,
+    makeDocID: makeDocID,
+    parseRelDocs: parseRelDocs,
+    isDeleted: isDeleted,
+    uuid: uuid,
+  };
+}
+
+export default {setSchema};
+
+declare global {
+  namespace PouchDB {
+    interface Static {
+      //TODO: return PluggedInStatic<T>, which overwrites new and default to return extended Database interface
+      // so we don't just extend the namespace, but instead really change the result of .plugin
+      
+      plugin<T extends {}>(plugin: T): Static;
+      //plugin(plugin: function(Static)): Static;
+    }
+    
+    interface Database<Content extends {} = {}> {
+      setSchema<T extends {} = Content>(schema: any): RelDatabase<T>;
+    }
+    
+    interface RelDatabase <Content extends {} = {}> extends Database<Content> {
+      rel: RelDB;
+    }
+  }
+}
+
diff --git a/lib/uuid.js b/src/uuid.ts
similarity index 95%
rename from lib/uuid.js
rename to src/uuid.ts
index 1e8107b..61cb146 100644
--- a/lib/uuid.js
+++ b/src/uuid.ts
@@ -1,5 +1,3 @@
-"use strict";
-
 // BEGIN Math.uuid.js
 
 /*!
@@ -36,14 +34,14 @@ Dual licensed under the MIT and GPL licenses.
  *   >>> Math.uuid(8, 16) // 8 character ID (base=16)
  *   "098F4D35"
  */
-var chars = (
+let chars = (
   '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
   'abcdefghijklmnopqrstuvwxyz'
 ).split('');
 function getValue(radix) {
   return 0 | Math.random() * radix;
 }
-function uuid(len, radix) {
+function uuid(len?:number, radix?:number) {
   radix = radix || chars.length;
   var out = '';
   var i = -1;
@@ -78,7 +76,6 @@ function uuid(len, radix) {
   return out;
 }
 
+export default uuid;
 
 
-module.exports = uuid;
-
diff --git a/test.tsconfig.json b/test.tsconfig.json
new file mode 100644
index 0000000..f168b97
--- /dev/null
+++ b/test.tsconfig.json
@@ -0,0 +1,4 @@
+{
+  "extends": "./tsconfig.json",
+  "include": ["src", "test/test.ts"],
+}
\ No newline at end of file
diff --git a/test/index.html b/test/index.html
index 80ae327..3cae790 100644
--- a/test/index.html
+++ b/test/index.html
@@ -9,7 +9,6 @@
     <script>
     mocha.setup({ui: 'bdd', timeout: 30000});
     </script>
-    <script src="../node_modules/blob-util/dist/blob-util.js"></script>
     <script src="./test-bundle.js"></script>
   </head>
   <body>
diff --git a/test/test.js b/test/test.ts
similarity index 89%
rename from test/test.js
rename to test/test.ts
index e63b6b3..4d25339 100644
--- a/test/test.js
+++ b/test/test.ts
@@ -1,26 +1,32 @@
-/*jshint expr:true */
-'use strict';
+import {createBlob} from 'blob-util';
 
-var Pouch = require('pouchdb-memory');
+import Pouch from 'pouchdb-core';
+import memory from 'pouchdb-adapter-memory';
+import http from 'pouchdb-adapter-http';
+import mapreduce from 'pouchdb-mapreduce';
+import find from 'pouchdb-find';
 
-//
-// your plugin goes here
-//
-var plugin = require('../lib');
-Pouch.plugin(plugin)
-  .plugin(require('pouchdb-find'));
+import rel from '../src/';
+
+import * as chai from 'chai';
+import * as chaiAsPromised from 'chai-as-promised';
 
-var chai = require('chai');
-chai.use(require("chai-as-promised"));
+Pouch
+  .plugin(memory)
+  .plugin(http)
+  .plugin(mapreduce)
+  .plugin(find)
+  .plugin(rel);
+
+chai.use(chaiAsPromised);
 
 //
 // more variables you might want
 //
-var should = chai.should(); // var should = chai.should();
-var Promise = require('bluebird'); // var Promise = require('bluebird');
+var should = chai.should();
 
 var dbs = 'testdb' + Math.random() +
-    ',http://localhost:5984/testdb' + Math.round(Math.random() * 100000);
+    ',http://' + (process.env.RELATIONAL_POUCH_DB_AUTH || '') + 'localhost:5984/testdb' + Math.round(Math.random() * 100000);
 
 dbs.split(',').forEach(function (db) {
   var dbType = /^http/.test(db) ? 'http' : 'local';
@@ -28,22 +34,22 @@ dbs.split(',').forEach(function (db) {
 });
 
 function tests(dbName, dbType) {
-  var db;
+  var rootdb:PouchDB.Database<any>;
 
   beforeEach(function () {
-    db = new Pouch(dbName);
-    return db;
+    rootdb = new Pouch(dbName);
+    return rootdb;
   });
   afterEach(function () {
-    return db.getIndexes().then(function(data) {
+    return rootdb.getIndexes().then(function(data) {
       var deleteIndexPromises = data.indexes.map(function(index) {
-          return index.ddoc ? (db.deleteIndex(index)) : (Promise.resolve());
-      	});
+          return index.ddoc ? (rootdb.deleteIndex(index)) : null;
+        });
       return Promise.all(deleteIndexPromises);
     }).catch(function() {
-    	//may fail on http
+      //may fail on http
     }).then(function() {
-    	return db.destroy();
+      return rootdb.destroy();
     });
   });
 
@@ -51,7 +57,7 @@ function tests(dbName, dbType) {
     this.timeout(30000);
 
     it('should barf on bad types', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -64,7 +70,7 @@ function tests(dbName, dbType) {
     });
 
     it('makeDocID and parseDocID produce symmetrical return vals', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -77,20 +83,19 @@ function tests(dbName, dbType) {
     });
 
     it('allows makeDocID for an unknown type', function () {
-      db.setSchema([]);
+      let db = rootdb.setSchema([]);
 
       db.rel.makeDocID({ type: 'something', id: 'quux' }).should.equal('something_2_quux');
     });
 
     it('allows parseDocID for an unknown type', function () {
-      db.setSchema([]);
+      let db = rootdb.setSchema([]);
 
       db.rel.parseDocID('something_2_bar').should.deep.equal({ type: 'something', id: 'bar' });
     });
 
     it('should store blog posts', function () {
-
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -103,22 +108,13 @@ function tests(dbName, dbType) {
         text: text
       }).then(function (res) {
         should.exist(res);
-        res.posts.should.have.length(1);
-        res.posts[0].id.should.be.a('string');
-        res.posts[0].rev.should.be.a('string');
-        var id = res.posts[0].id;
-        var rev = res.posts[0].rev;
-        res.posts[0].should.deep.equal({
-          id: id,
-          rev: rev,
-          title: title,
-          text: text
-        });
+        res.id.should.be.a('string');
+        res.rev.should.be.a('string');
       });
     });
     it('should store blog posts with an id', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -133,23 +129,15 @@ function tests(dbName, dbType) {
         id: id
       }).then(function (res) {
         should.exist(res);
-        res.posts.should.have.length(1);
-        res.posts[0].id.should.be.a('string');
-        res.posts[0].rev.should.be.a('string');
-        var id = res.posts[0].id;
-        var rev = res.posts[0].rev;
-        res.posts[0].should.deep.equal({
-          id: id,
-          rev: rev,
-          title: title,
-          text: text
-        });
+        res.id.should.be.a('string');
+        res.rev.should.be.a('string');
+        res.id.should.equal(id);
       });
     });
 
     it('should store blog posts with an int id', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -164,23 +152,15 @@ function tests(dbName, dbType) {
         id: id
       }).then(function (res) {
         should.exist(res);
-        res.posts.should.have.length(1);
-        res.posts[0].id.should.be.a('number');
-        res.posts[0].rev.should.be.a('string');
-        var id = res.posts[0].id;
-        var rev = res.posts[0].rev;
-        res.posts[0].should.deep.equal({
-          id: id,
-          rev: rev,
-          title: title,
-          text: text
-        });
+        res.id.should.be.a('number');
+        res.rev.should.be.a('string');
+        res.id.should.equal(id);
       });
     });
 
     it('should update blog posts', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -188,30 +168,48 @@ function tests(dbName, dbType) {
       var title = 'Rails is Omakase';
       var text = 'There are a lot of ala carte blah blah blah';
       var id = 1;
-
-      return db.rel.save('post', {
+      var post:any = {
         title: title,
         text: text,
         id: id
-      }).then(function (res) {
+      };
+
+      return db.rel.save('post', post).then(function (res) {
         should.exist(res);
-        var post = res.posts[0];
+        res.rev.should.be.a('string');
+        res.id.should.be.a('number');
+        res.id.should.equal(id);
+        Object.assign(post, res);
         post.title = 'Rails is Unagi';
         return db.rel.save('post', post);
       }).then(function (res) {
-        var rev = res.posts[0].rev;
-        res.posts.should.deep.equal([{
-          id: id,
-          rev: rev,
-          title: 'Rails is Unagi',
-          text: text
-        }]);
+        res.rev.should.be.a('string');
+        res.id.should.be.a('number');
+        res.id.should.equal(id);
+        res.rev.should.not.equal(post.rev);
       });
     });
+    
+    it('fails on a rev conflict', function () {
 
+      let db = rootdb.setSchema([{
+        singular: 'post',
+        plural: 'posts'
+      }]);
+      
+      var post:any = {
+        title: "Some title",
+        id: "postid"
+      };
+      
+      return db.rel.save('post', post).then(function (res) {
+        return db.rel.save('post', post);
+      }).should.be.rejected;
+    });
+    
     it('should find blog posts', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -253,7 +251,7 @@ function tests(dbName, dbType) {
 
     it('should orders correctly', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -306,7 +304,7 @@ function tests(dbName, dbType) {
 
     it('should find empty blog posts', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -320,7 +318,7 @@ function tests(dbName, dbType) {
 
     it('should find stuff that doesnt exist', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -339,7 +337,7 @@ function tests(dbName, dbType) {
 
     it('should separate independent types', function () {
 
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'post',
           plural: 'posts'
@@ -366,7 +364,7 @@ function tests(dbName, dbType) {
 
     it('should find a single thing', function () {
 
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'post',
           plural: 'posts'
@@ -401,7 +399,7 @@ function tests(dbName, dbType) {
 
     it('should find multiple things', function () {
 
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'post',
           plural: 'posts'
@@ -442,7 +440,7 @@ function tests(dbName, dbType) {
     });
 
     it('should find using a documentType if provided', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'postSummary',
           plural: 'postSummaries',
@@ -462,7 +460,7 @@ function tests(dbName, dbType) {
     });
 
     it('should save using a documentType if provided', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'postSummary',
           plural: 'postSummary',
@@ -484,7 +482,7 @@ function tests(dbName, dbType) {
     });
 
     it('should use the documentType for makeDocID', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'post',
           plural: 'posts'
@@ -500,7 +498,7 @@ function tests(dbName, dbType) {
     });
 
     it('should use the default documentType for parseDocID, if present', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'post',
           plural: 'posts'
@@ -516,7 +514,7 @@ function tests(dbName, dbType) {
     });
 
     it('should use a type with a matching documentType for parseDocID, if no default', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'postSummary',
           plural: 'postSummaries',
@@ -526,10 +524,32 @@ function tests(dbName, dbType) {
 
       db.rel.parseDocID('post_2_bar').should.deep.equal({ type: 'postSummary', id: 'bar' });
     });
+    
+    it('should save a snapshot, so changes after rel.save should be ignored', function () {
+      let db = rootdb.setSchema([{
+        singular: 'post',
+        plural: 'posts'
+      }]);
+      
+      let titleBeforeSaving = "Title before saving";
+      let post = {
+        title: titleBeforeSaving,
+        id: 'snapshot'
+      };
+      
+      let savePromise = db.rel.save('post', post);
+      post.title = "Title after saving";
+
+      return savePromise.then(function () {
+        return db.rel.find('post', post.id);
+      }).then(function (res) {
+        res.posts[0].title.should.equal(titleBeforeSaving);
+      });
+    });
 
     it('can delete', function () {
 
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'post',
           plural: 'posts'
@@ -574,7 +594,7 @@ function tests(dbName, dbType) {
 
     it('Adds attachment information', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -587,10 +607,10 @@ function tests(dbName, dbType) {
         return db.get("post_2_with_attachment");
       }).then(function (res) {
         var attachment;
-        if (process.browser) {
-          attachment = blobUtil.createBlob(['Is there life on Mars?']);
+        if (typeof window !== 'undefined') {
+          attachment = createBlob(['Is there life on Mars?']);
         } else {
-          attachment = new Buffer('Is there life on Mars?');
+          attachment = Buffer.from('Is there life on Mars?');
         }
         return db.putAttachment(res._id, "file", res._rev, attachment, 'text/plain');
       }).then(function () {
@@ -602,16 +622,16 @@ function tests(dbName, dbType) {
     });
 
     it('When saving the new document, saves the attachment', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
 
       var attachment;
-      if (process.browser) {
-        attachment = blobUtil.createBlob(['Is there life on Mars?']);
+      if (typeof window !== 'undefined') {
+        attachment = createBlob(['Is there life on Mars?']);
       } else {
-        attachment = new Buffer('Is there life on Mars?');
+        attachment = Buffer.from('Is there life on Mars?');
       }
 
       return db.rel.save('post', {
@@ -635,16 +655,16 @@ function tests(dbName, dbType) {
     });
 
     it('When updating the existing document, keeps the attachment', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
 
       var attachment;
-      if (process.browser) {
-        attachment = blobUtil.createBlob(['Is there life on Mars?']);
+      if (typeof window !== 'undefined') {
+        attachment = createBlob(['Is there life on Mars?']);
       } else {
-        attachment = new Buffer('Is there life on Mars?');
+        attachment = Buffer.from('Is there life on Mars?');
       }
 
       return db.rel.save('post', {
@@ -676,16 +696,16 @@ function tests(dbName, dbType) {
     });
 
     it('Removes the attachment through removal of attachments field', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
 
       var attachment;
-      if (process.browser) {
-        attachment = blobUtil.createBlob(['Is there life on Mars?']);
+      if (typeof window !== 'undefined') {
+        attachment = createBlob(['Is there life on Mars?']);
       } else {
-        attachment = new Buffer('Is there life on Mars?');
+        attachment = Buffer.from('Is there life on Mars?');
       }
 
       return db.rel.save('post', {
@@ -714,7 +734,7 @@ function tests(dbName, dbType) {
     });
 
     it('Adds attachments through rel.putAttachment', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -723,13 +743,15 @@ function tests(dbName, dbType) {
         title: "Files are cool",
         text: "In order to have nice blog posts we need to be able to add files",
         id: 'with_attachment'
+      }).then(function() {
+        return db.rel.find('post', 'with_attachment');
       }).then(function (res) {
         var attachment;
         var post = res.posts[0];
-        if (process.browser) {
-          attachment = blobUtil.createBlob(['Is there life on Mars?']);
+        if (typeof window !== 'undefined') {
+          attachment = createBlob(['Is there life on Mars?']);
         } else {
-          attachment = new Buffer('Is there life on Mars?');
+          attachment = Buffer.from('Is there life on Mars?');
         }
         return db.rel.putAttachment('post', post, "file", attachment, 'text/plain');
       }).then(function () {
@@ -742,7 +764,7 @@ function tests(dbName, dbType) {
     });
 
     it('Get attachments through rel.getAttachment', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -751,24 +773,26 @@ function tests(dbName, dbType) {
         title: "Files are cool",
         text: "In order to have nice blog posts we need to be able to add files",
         id: 'with_attachment'
+      }).then(function() {
+        return db.rel.find('post', 'with_attachment');
       }).then(function (res) {
         var attachment;
         var post = res.posts[0];
-        if (process.browser) {
-          attachment = blobUtil.createBlob(['Is there life on Mars?']);
+        if (typeof window !== 'undefined') {
+          attachment = createBlob(['Is there life on Mars?']);
         } else {
-          attachment = new Buffer('Is there life on Mars?');
+          attachment = Buffer.from('Is there life on Mars?');
         }
         return db.rel.putAttachment('post', post, "file", attachment, 'text/plain');
       }).then(function () {
         return db.rel.getAttachment('post', 'with_attachment', 'file');
       }).then(function (attachment) {
-        if (process.browser) {
+        if (typeof window !== 'undefined') {
           var reader = new FileReader();
           reader.onloadend = function () {
 
             var binary = "";
-            var bytes = new Uint8Array(this.result || '');
+            var bytes = new Uint8Array(this.result as ArrayBuffer);
             var length = bytes.byteLength;
 
             for (var i = 0; i < length; i++) {
@@ -777,7 +801,7 @@ function tests(dbName, dbType) {
 
             binary.should.equal('Is there life on Mars?');
           };
-          reader.readAsArrayBuffer(attachment);
+          reader.readAsArrayBuffer(attachment as Blob);
         } else {
           attachment.toString('ascii').should.equal('Is there life on Mars?');
         }
@@ -785,7 +809,7 @@ function tests(dbName, dbType) {
     });
 
     it('Removes attachments through rel.removeAttachment', function () {
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -794,13 +818,15 @@ function tests(dbName, dbType) {
         title: "Files are cool",
         text: "In order to have nice blog posts we need to be able to add files",
         id: 'with_attachment'
+      }).then(function() {
+        return db.rel.find('post', 'with_attachment');
       }).then(function (res) {
         var attachment;
         var post = res.posts[0];
-        if (process.browser) {
-          attachment = blobUtil.createBlob(['Is there life on Mars?']);
+        if (typeof window !== 'undefined') {
+          attachment = createBlob(['Is there life on Mars?']);
         } else {
-          attachment = new Buffer('Is there life on Mars?');
+          attachment = Buffer.from('Is there life on Mars?');
         }
         return db.rel.putAttachment('post', post, "file", attachment, 'text/plain');
       }).then(function () {
@@ -823,7 +849,7 @@ function tests(dbName, dbType) {
 
     it('fails if you include no relations', function () {
       return Promise.resolve().then(function () {
-        db.setSchema([{
+        let db = rootdb.setSchema([{
           singular: 'foo',
           plural: 'foos',
           relations: {}
@@ -837,7 +863,7 @@ function tests(dbName, dbType) {
 
     it('fails if you include empty relationship definition', function () {
       return Promise.resolve().then(function () {
-        db.setSchema([{
+        let db = rootdb.setSchema([{
           singular: 'foo',
           plural: 'foos',
           relations: {
@@ -853,7 +879,7 @@ function tests(dbName, dbType) {
 
     it('fails for unknown entity types', function () {
       return Promise.resolve().then(function () {
-        db.setSchema([{
+        let db = rootdb.setSchema([{
           singular: 'foo',
           plural: 'foos',
           relations: {
@@ -869,7 +895,7 @@ function tests(dbName, dbType) {
 
     it('fails for unknown relation types', function () {
       return Promise.resolve().then(function () {
-        db.setSchema([
+        let db = rootdb.setSchema([
           {
             singular: 'foo',
             plural: 'foos',
@@ -894,7 +920,7 @@ function tests(dbName, dbType) {
     this.timeout(30000);
 
     it('does one-to-one', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -949,7 +975,7 @@ function tests(dbName, dbType) {
     });
 
     it('does one-to-many with empty dependents', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -989,7 +1015,7 @@ function tests(dbName, dbType) {
     });
 
     it('does one-to-many with several entities', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1082,7 +1108,7 @@ function tests(dbName, dbType) {
       });
     });
     it('does many-to-many with recursive relationship', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1306,7 +1332,7 @@ function tests(dbName, dbType) {
 
     if (dbType === 'local') { //pouchdb-find only supported on cloudant and couch >= 2.0
     it('does parseRelDocs', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1324,7 +1350,7 @@ function tests(dbName, dbType) {
       ]);
 
       return db.createIndex({index: { fields: ['data.name'] }}).then(function() {
-      	return db.rel.save('author', {
+        return db.rel.save('author', {
           name: 'Stephen King',
           id: 19,
           books: [1]
@@ -1336,10 +1362,10 @@ function tests(dbName, dbType) {
           author: 19
         });
       }).then(function () {
-      	//not a rel.find
-        return db.find({selector: {'data.name': 'Stephen King'}}).then(function(findRes) {
-        	return db.rel.parseRelDocs('author', findRes.docs);
-        });
+        //not a rel.find
+        return db.find({selector: {'data.name': 'Stephen King'}});
+      }).then(function(findRes) {
+        return db.rel.parseRelDocs('author', findRes.docs);
       }).then(function (res) {
         ['authors', 'books'].forEach(function (type) {
           res[type].forEach(function (obj) {
@@ -1367,7 +1393,7 @@ function tests(dbName, dbType) {
     });
 
     it('does one-to-many without saving hasMany side', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1385,7 +1411,7 @@ function tests(dbName, dbType) {
       ]);
 
       return db.createIndex({index: { fields: ['data.author', '_id'] }}).then(function() {
-      	return db.rel.save('author', {
+        return db.rel.save('author', {
           name: 'Stephen King',
           id: 19,
         });
@@ -1423,12 +1449,12 @@ function tests(dbName, dbType) {
     });
 
     it('does findHasMany', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
           relations: {
-          	//omit relation should also work
+            //omit relation should also work
             'books': {hasMany: { type: 'book', options: {async: true, queryInverse: 'author'}}}
           }
         },
@@ -1442,7 +1468,7 @@ function tests(dbName, dbType) {
       ]);
 
       return db.createIndex({index: { fields: ['data.author', '_id'] }}).then(function() {
-      	return db.rel.save('author', {
+        return db.rel.save('author', {
           name: 'Stephen King',
           id: 19,
         });
@@ -1472,7 +1498,7 @@ function tests(dbName, dbType) {
 
         return db.rel.findHasMany('book', 'author', 19);
       }).then(function(res) {
-      	['books'].forEach(function (type) {
+        ['books'].forEach(function (type) {
           res[type].forEach(function (obj) {
             obj.rev.should.be.a('string');
             delete obj.rev;
@@ -1492,7 +1518,7 @@ function tests(dbName, dbType) {
     }
 
     it('does many-to-many with several entities', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1594,7 +1620,7 @@ function tests(dbName, dbType) {
     });
 
     it('should fetch all authors even with empty relations', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1665,7 +1691,7 @@ function tests(dbName, dbType) {
     });
 
     it('does one-to-many', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1764,7 +1790,7 @@ function tests(dbName, dbType) {
     });
 
     it('does one-to-many with embedded relations', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1866,7 +1892,7 @@ function tests(dbName, dbType) {
       });
     });
     it('does one-to-many and keeps the right order', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -1965,7 +1991,7 @@ function tests(dbName, dbType) {
     });
 
     it('does sideload if async option is false', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -2040,7 +2066,7 @@ function tests(dbName, dbType) {
       });
     });
     it('does not sideload if async option is true', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -2100,7 +2126,7 @@ function tests(dbName, dbType) {
     });
 
     it('fromRawDoc works with changes', function () {
-      db.setSchema([
+      let db = rootdb.setSchema([
         {
           singular: 'author',
           plural: 'authors',
@@ -2155,7 +2181,7 @@ function tests(dbName, dbType) {
 
     it('should pass along options', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -2192,7 +2218,7 @@ function tests(dbName, dbType) {
 
     it('should pass along options, including startkey', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -2233,7 +2259,7 @@ function tests(dbName, dbType) {
 
     it('should pass along options, including endkey', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -2273,7 +2299,7 @@ function tests(dbName, dbType) {
 
   it('should pass along options, including kip', function () {
 
-      db.setSchema([{
+      let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
@@ -2313,7 +2339,7 @@ function tests(dbName, dbType) {
     });
 
   it('isDeleted should work', function() {
-    db.setSchema([{
+    let db = rootdb.setSchema([{
         singular: 'post',
         plural: 'posts'
       }]);
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..6be7314
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+  	"lib": ["es5", "es2015", "dom", "scripthost"],
+    "target": "esnext",
+    "declaration": true,
+    "outDir": "./lib",
+    "strict": false,
+    "allowSyntheticDefaultImports": true,
+    "baseUrl": "./src",
+    /*"paths": {
+    	"*": ["@types/*"]
+    },*/
+    "moduleResolution": "node",
+    "typeRoots": ["@types", "node_modules/@types"],
+  },
+  "include": ["src"],
+  "exclude": ["node_modules"]
+}
\ No newline at end of file
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 0000000..01b79c1
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,131 @@
+
+let webpack = require('webpack');
+//let deepScope = require('webpack-deep-scope-plugin').default;
+
+let path = require('path');
+let package = require('./package.json');
+
+module.exports = (env, argv) => {
+let nodeTarget = {
+	target: "node",
+	entry: "./src/index.ts",
+	mode: argv.mode || 'development',
+	output: {
+	  path: path.resolve(__dirname, 'dist'),
+	  filename: 'pouchdb.relational-pouch.node.js',
+    libraryTarget: 'commonjs2',
+    libraryExport: 'default',
+  },
+  externals: Object.keys(package.dependencies),
+  plugins: [
+  ],
+  module: {
+    rules: [
+      {
+        test: /\.m?[jt]s$/,
+        exclude: /(node_modules|bower_components)/,
+        use: [
+          {
+            loader: 'babel-loader',
+            options: {
+              presets: [
+                ['@babel/preset-env',
+                {
+                  "targets": {
+                    "node": "10"
+                  },
+                  "modules": false,
+                  useBuiltIns: "usage",
+                  corejs: 3,
+                }],
+              ],
+            },
+          },
+          {
+            loader: 'ts-loader',
+            options: {
+              transpileOnly: true,
+              experimentalWatchApi: true,
+            },
+          },
+        ],
+      }
+    ]
+  },
+  resolve: {
+    extensions: ['tsx', '.ts', '.js', '.json'],
+  },
+//  externals: [
+//    function(context, request, callback) {
+//      if (/^http-debug$/.test(request)){
+//        return callback(null, 'commonjs ' + request);
+//      }
+//      callback();
+//    },
+//  ],
+};
+
+let webTarget = {
+	target: "web",
+	entry: "./src/browser.ts",//TODO: this file could be exluded in tsc to not generate dist/browser.*
+	mode: argv.mode || 'development',
+//  stats: 'verbose',
+	output: {
+	  path: path.resolve(__dirname, 'dist'),
+	  filename: 'pouchdb.relational-pouch.browser.js',
+    libraryTarget: 'umd',
+  },
+  plugins: [
+  ],
+  module: {
+    rules: [
+      {
+        test: /\.m?[jt]s$/,
+        exclude: /(node_modules|bower_components)/,
+        use: [
+          {
+            loader: 'babel-loader',
+            options: {
+              presets: [
+                ['@babel/preset-env',
+                {
+                  "targets": ">2%, not ie 11",
+                  "modules": false,
+                  useBuiltIns: "usage",
+                  corejs: 3,
+                }],
+              ],
+            },
+          },
+          {
+            loader: 'ts-loader',
+            options: {
+              transpileOnly: true,
+              experimentalWatchApi: true,
+            },
+          },
+        ],
+      }
+    ]
+  },
+  resolve: {
+    extensions: ['tsx', '.ts', '.js', '.json'],
+  },
+//  externals: [
+//    function(context, request, callback) {
+//      if (/^http-debug$/.test(request)){
+//        return callback(null, 'commonjs ' + request);
+//      }
+//      callback();
+//    },
+//  ],
+};
+
+var doSourcemapping = argv.mode != 'production';//also needs a change in run.js
+if (doSourcemapping) {
+  webTarget.devtool = 'source-map';//'inline-source-map',
+  nodeTarget.devtool = 'source-map';
+}
+
+return [webTarget, nodeTarget,];
+};
diff --git a/webpack.test.node.config.js b/webpack.test.node.config.js
new file mode 100644
index 0000000..eefcbf3
--- /dev/null
+++ b/webpack.test.node.config.js
@@ -0,0 +1,75 @@
+
+let webpack = require('webpack');
+const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
+
+let path = require('path');
+let package = require('./package.json');
+
+let babelLoader = {
+  loader: 'babel-loader',
+  options: {
+    presets: [
+      ['@babel/preset-env',
+      {
+        "targets": {
+          "node": "current"
+        },
+        "modules": false,
+        useBuiltIns: "usage",
+        corejs: 3,
+      }],
+    ],
+    plugins: ["istanbul"],
+  },
+};
+
+module.exports = (env, argv) => {
+let nodeTarget = {
+  stats: 'errors-only',
+	target: "node",
+	entry: "./test/test.ts",
+	mode: argv.mode || 'development',
+  externals: Object.keys(package.dependencies),
+	output: {
+	  path: path.resolve(__dirname, 'test'),
+	  filename: 'test-node.js',
+    libraryTarget: 'commonjs2',
+  },
+  plugins: [
+    new ForkTsCheckerWebpackPlugin(),
+  ],
+  module: {
+    rules: [
+      {
+        test: /\.[tj]s$/,
+        exclude: /(node_modules|bower_components)/,
+        use: [
+          babelLoader,
+          {
+            loader: 'ts-loader',
+            options: {
+              transpileOnly: true,
+              experimentalWatchApi: true,
+            },
+          },
+        ],
+      },
+//      {
+//        test: /\.m?js$/,
+//        exclude: /(node_modules|bower_components)/,
+//        use: babelLoader,
+//      },
+    ]
+  },
+  resolve: {
+    extensions: ['tsx', '.ts', '.js', '.json'],
+  },
+};
+
+var doSourcemapping = argv.mode != 'production';//also needs a change in run.js
+if (doSourcemapping) {
+  nodeTarget.devtool = 'source-map';
+}
+
+return [nodeTarget,];
+};