v13.0.0-60 -- distribution files

README.md

@@ -70,6 +70,7 @@ missing modules.
 <script src="https://cdn.jsdelivr.net/npm/y-array@10/dist/y-array.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/y-websockets-client@8/dist/y-websockets-client.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/y-memory@8/dist/y-memory.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/y-array@10/dist/y-array.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/y-map@10/dist/y-map.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/y-text@9/dist/y-text.js"></script>
 // ..
@@ -88,6 +89,7 @@ var Y = require('yjs')
 require('y-array')(Y) // add the y-array type to Yjs
 require('y-websockets-client')(Y)
 require('y-memory')(Y)
+require('y-array')(Y)
 require('y-map')(Y)
 require('y-text')(Y)
 // ..
@@ -100,6 +102,7 @@ import Y from 'yjs'
 import yArray from 'y-array'
 import yWebsocketsClient from 'y-webrtc'
 import yMemory from 'y-memory'
+import yArray from 'y-array'
 import yMap from 'y-map'
 import yText from 'y-text'
 // ..

package-lock.json

@@ -1,21 +1,9 @@
 {
   "name": "yjs",
-  "version": "13.0.0-61",
+  "version": "13.0.0-60",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@types/estree": {
-      "version": "0.0.38",
-      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.38.tgz",
-      "integrity": "sha512-F/v7t1LwS4vnXuPooJQGBRKRGIoxWUTmA4VHfqjOccFsNDThD5bfUNpITive6s352O7o384wcpEaDV8rHCehDA==",
-      "dev": true
-    },
-    "@types/node": {
-      "version": "6.0.110",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-6.0.110.tgz",
-      "integrity": "sha512-LiaH3mF+OAqR+9Wo1OTJDbZDtCewAVjTbMhF1ZgUJ3fc8xqOJq6VqbpBh9dJVCVzByGmYIg2fREbuXNX0TKiJA==",
-      "dev": true
-    },
     "abab": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
@@ -1510,7 +1498,6 @@
       "version": "2.6.8",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.8.tgz",
       "integrity": "sha1-5zFTHKLt4n0YgiJCfaF4IdaP9Pw=",
-      "dev": true,
       "requires": {
         "ms": "2.0.0"
       }
@@ -4819,8 +4806,7 @@
     "ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
-      "dev": true
     },
     "mute-stream": {
       "version": "0.0.5",
@@ -5643,16 +5629,6 @@
         "glob": "7.1.2"
       }
     },
-    "rollup": {
-      "version": "0.58.2",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.58.2.tgz",
-      "integrity": "sha512-RZVvCWm9BHOYloaE6LLiE/ibpjv1CmI8F8k0B0Cp+q1eezo3cswszJH1DN0djgzSlo0hjuuCmyeI+1XOYLl4wg==",
-      "dev": true,
-      "requires": {
-        "@types/estree": "0.0.38",
-        "@types/node": "6.0.110"
-      }
-    },
     "rollup-plugin-babel": {
       "version": "2.7.1",
       "resolved": "https://registry.npmjs.org/rollup-plugin-babel/-/rollup-plugin-babel-2.7.1.tgz",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "yjs",
-  "version": "13.0.0-61",
+  "version": "13.0.0-60",
   "description": "A framework for real-time p2p shared editing on any data",
   "main": "./y.node.js",
   "browser": "./y.js",
@@ -61,7 +61,6 @@
     "esdoc-standard-plugin": "^1.0.0",
     "quill": "^1.3.5",
     "quill-cursors": "^1.0.2",
-    "rollup": "^0.58.2",
     "rollup-plugin-babel": "^2.7.1",
     "rollup-plugin-commonjs": "^8.0.2",
     "rollup-plugin-inject": "^2.0.0",

src/Bindings/DomBinding/DomBinding.js

@@ -121,11 +121,12 @@ export default class DomBinding extends Binding {
   destroy () {
     this.domToType = null
     this.typeToDom = null
-    this.type.unobserveDeep(this._typeObserver)
+    this.type.unobserve(this._typeObserver)
     this._mutationObserver.disconnect()
     const y = this.type._y
     y.off('beforeTransaction', this._beforeTransactionHandler)
     y.off('beforeObserverCalls', this._beforeObserverCallsHandler)
+    y.off('afterObserverCalls', this._afterObserverCallsHandler)
     y.off('afterTransaction', this._afterTransactionHandler)
     super.destroy()
   }

src/Bindings/DomBinding/domObserver.js

@@ -94,7 +94,7 @@ export default function domObserver (mutations, _document) {
           let parent = dom
           let yParent
           do {
-            parent = parent.parentElement
+            parent = parent.parentNode
             yParent = this.domToType.get(parent)
           } while (yParent === undefined && parent !== null)
           if (yParent !== false && yParent !== undefined && yParent.constructor !== YXmlHook) {

src/Bindings/DomBinding/domToType.js

@@ -1,7 +1,5 @@
 
-import YXmlText from '../../Types/YXml/YXmlText.js'
+import { YXmlText, YXmlElement, YXmlHook } from '../../Types/YXml/YXml.js'
-import YXmlHook from '../../Types/YXml/YXmlHook.js'
-import YXmlElement from '../../Types/YXml/YXmlElement.js'
 import { createAssociation, domsToTypes } from './util.js'
 import { filterDomAttributes, defaultFilter } from './filter.js'
 

src/Bindings/DomBinding/typeObserver.js

@@ -50,6 +50,7 @@ export default function typeObserver (events) {
       if (dom !== undefined && dom !== false) {
         if (yxml.constructor === YXmlText) {
           dom.nodeValue = yxml.toString()
+          // TODO: use hasOwnProperty instead of === undefined check
         } else if (event.attributesChanged !== undefined) {
           // update attributes
           event.attributesChanged.forEach(attributeName => {

src/MessageHandler/messageToString.js

@@ -61,5 +61,5 @@ export function logID (id) {
 export function logItemHelper (name, item, append) {
   const left = item._left !== null ? item._left._lastId : null
   const origin = item._origin !== null ? item._origin._lastId : null
-  return `${name}(id:${logID(item._id)},left:${logID(left)},origin:${logID(origin)},right:${logID(item._right)},parent:${logID(item._parent)},parentSub:${item._parentSub}${append !== undefined ? ' - ' + append : ''})`
+  return `${name}(id:${logID(item._id)},start:${logID(item._start)},left:${logID(left)},origin:${logID(origin)},right:${logID(item._right)},parent:${logID(item._parent)},parentSub:${item._parentSub}${append !== undefined ? ' - ' + append : ''})`
 }

src/Types/YText/YText.js

@@ -155,7 +155,7 @@ function insertAttributes (y, parent, left, right, attributes, currentAttributes
  */
 function insertText (y, text, parent, left, right, currentAttributes, attributes) {
   for (let [key] of currentAttributes) {
-    if (attributes[key] === undefined) {
+    if (attributes.hasOwnProperty(key) === false) {
       attributes[key] = null
     }
   }
@@ -189,9 +189,8 @@ function formatText (y, length, parent, left, right, currentAttributes, attribut
     if (right._deleted === false) {
       switch (right.constructor) {
         case ItemFormat:
-          const attr = attributes[right.key]
+          if (attributes.hasOwnProperty(right.key)) {
-          if (attr !== undefined) {
+            if (attributes[right.key] === right.value) {
-            if (attr === right.value) {
               negatedAttributes.delete(right.key)
             } else {
               negatedAttributes.set(right.key, right.value)
@@ -406,9 +405,8 @@ class YTextEvent extends YArrayEvent {
                 }
               } else if (item._deleted === false) {
                 oldAttributes.set(item.key, item.value)
-                const attr = attributes[item.key]
+                if (attributes.hasOwnProperty(item.key)) {
-                if (attr !== undefined) {
+                  if (attributes[item.key] !== item.value) {
-                  if (attr !== item.value) {
                     if (action === 'retain') {
                       addOp()
                     }
@@ -435,7 +433,7 @@ class YTextEvent extends YArrayEvent {
         addOp()
         while (this._delta.length > 0) {
           let lastOp = this._delta[this._delta.length - 1]
-          if (lastOp.retain !== undefined && lastOp.attributes === undefined) {
+          if (lastOp.hasOwnProperty('retain') && !lastOp.hasOwnProperty('attributes')) {
             // retain delta's if they don't assign attributes
             this._delta.pop()
           } else {
@@ -507,11 +505,11 @@ export default class YText extends YArray {
       const currentAttributes = new Map()
       for (let i = 0; i < delta.length; i++) {
         let op = delta[i]
-        if (op.insert !== undefined) {
+        if (op.hasOwnProperty('insert')) {
           ;[left, right] = insertText(y, op.insert, this, left, right, currentAttributes, op.attributes || {})
-        } else if (op.retain !== undefined) {
+        } else if (op.hasOwnProperty('retain')) {
           ;[left, right] = formatText(y, op.retain, this, left, right, currentAttributes, op.attributes || {})
-        } else if (op.delete !== undefined) {
+        } else if (op.hasOwnProperty('delete')) {
           ;[left, right] = deleteText(y, op.delete, this, left, right, currentAttributes)
         }
       }

src/Types/YXml/YXml.js

@@ -0,0 +1,12 @@
+
+import YXmlFragment from './YXmlFragment.js'
+import YXmlElement from './YXmlElement.js'
+import YXmlHook from './YXmlHook.js'
+
+export { default as YXmlFragment } from './YXmlFragment.js'
+export { default as YXmlElement } from './YXmlElement.js'
+export { default as YXmlText } from './YXmlText.js'
+export { default as YXmlHook } from './YXmlHook.js'
+
+YXmlFragment._YXmlElement = YXmlElement
+YXmlFragment._YXmlHook = YXmlHook

src/Types/YXml/YXmlElement.js

@@ -1,5 +1,5 @@
 import YMap from '../YMap/YMap.js'
-import YXmlFragment from './YXmlFragment.js'
+import { YXmlFragment } from './YXml.js'
 import { createAssociation } from '../../Bindings/DomBinding/util.js'
 
 /**
@@ -186,5 +186,3 @@ export default class YXmlElement extends YXmlFragment {
     return dom
   }
 }
-
-YXmlFragment._YXmlElement = YXmlElement

src/Util/structReferences.js

@@ -1,10 +1,7 @@
 import YArray from '../Types/YArray/YArray.js'
 import YMap from '../Types/YMap/YMap.js'
 import YText from '../Types/YText/YText.js'
-import YXmlText from '../Types/YXml/YXmlText.js'
+import { YXmlFragment, YXmlElement, YXmlText, YXmlHook } from '../Types/YXml/YXml.js'
-import YXmlHook from '../Types/YXml/YXmlHook.js'
-import YXmlFragment from '../Types/YXml/YXmlFragment.js'
-import YXmlElement from '../Types/YXml/YXmlElement.js'
 
 import Delete from '../Struct/Delete.js'
 import ItemJSON from '../Struct/ItemJSON.js'

src/Y.dist.js

@@ -10,10 +10,7 @@ import Persistence from './Persistence.js'
 import YArray from './Types/YArray/YArray.js'
 import YMap from './Types/YMap/YMap.js'
 import YText from './Types/YText/YText.js'
-import YXmlText from './Types/YXml/YXmlText.js'
+import { YXmlFragment, YXmlElement, YXmlText, YXmlHook } from './Types/YXml/YXml.js'
-import YXmlHook from './Types/YXml/YXmlHook.js'
-import YXmlFragment from './Types/YXml/YXmlFragment.js'
-import YXmlElement from './Types/YXml/YXmlElement.js'
 import BinaryDecoder from './Util/Binary/Decoder.js'
 import { getRelativePosition, fromRelativePosition } from './Util/relativePosition.js'
 import { registerStruct } from './Util/structReferences.js'

y.node.js

@@ -1,7 +1,7 @@
 
 /**
  * yjs - A framework for real-time p2p shared editing on any data
- * @version v13.0.0-61
+ * @version v13.0.0-60
  * @license MIT
  */
 
@@ -1341,7 +1341,7 @@ function logID (id) {
     return `(${id.user},${id.clock})`
   } else if (id instanceof RootID) {
     return `(${id.name},${id.type})`
-  } else if (id.constructor === Y) {
+  } else if (id.constructor === Y$1) {
     return `y`
   } else {
     throw new Error('This is not a valid ID!')
@@ -1362,7 +1362,7 @@ function logID (id) {
 function logItemHelper (name, item, append) {
   const left = item._left !== null ? item._left._lastId : null;
   const origin = item._origin !== null ? item._origin._lastId : null;
-  return `${name}(id:${logID(item._id)},left:${logID(left)},origin:${logID(origin)},right:${logID(item._right)},parent:${logID(item._parent)},parentSub:${item._parentSub}${append !== undefined ? ' - ' + append : ''})`
+  return `${name}(id:${logID(item._id)},start:${logID(item._start)},left:${logID(left)},origin:${logID(origin)},right:${logID(item._right)},parent:${logID(item._parent)},parentSub:${item._parentSub}${append !== undefined ? ' - ' + append : ''})`
 }
 
 /**
@@ -1835,7 +1835,9 @@ class Item {
     const userState = y.ss.getState(user);
     if (selfID === null) {
       this._id = y.ss.getNextID(this._length);
-    } else if (selfID.user === RootFakeUserID) ; else if (selfID.clock < userState) {
+    } else if (selfID.user === RootFakeUserID) {
+      // nop
+    } else if (selfID.clock < userState) {
       // already applied..
       return []
     } else if (selfID.clock === userState) {
@@ -2163,6 +2165,8 @@ function integrateChildren (y, start) {
   } while (right !== null)
 }
 
+
+
 function gcChildren (y, item) {
   while (item !== null) {
     item._delete(y, false, true);
@@ -3248,7 +3252,9 @@ function minimizeAttributeChanges (left, right, currentAttributes, attributes) {
   while (true) {
     if (right === null) {
       break
-    } else if (right._deleted === true) ; else if (right.constructor === ItemFormat && (attributes[right.key] || null) === right.value) {
+    } else if (right._deleted === true) {
+      // continue
+    } else if (right.constructor === ItemFormat && (attributes[right.key] || null) === right.value) {
       // found a format, update currentAttributes and continue
       updateCurrentAttributes(currentAttributes, right);
     } else {
@@ -3287,7 +3293,7 @@ function insertAttributes (y, parent, left, right, attributes, currentAttributes
  */
 function insertText (y, text, parent, left, right, currentAttributes, attributes) {
   for (let [key] of currentAttributes) {
-    if (attributes[key] === undefined) {
+    if (attributes.hasOwnProperty(key) === false) {
       attributes[key] = null;
     }
   }
@@ -3321,9 +3327,8 @@ function formatText (y, length, parent, left, right, currentAttributes, attribut
     if (right._deleted === false) {
       switch (right.constructor) {
         case ItemFormat:
-          const attr = attributes[right.key];
+          if (attributes.hasOwnProperty(right.key)) {
-          if (attr !== undefined) {
+            if (attributes[right.key] === right.value) {
-            if (attr === right.value) {
               negatedAttributes.delete(right.key);
             } else {
               negatedAttributes.set(right.key, right.value);
@@ -3538,9 +3543,8 @@ class YTextEvent extends YArrayEvent {
                 }
               } else if (item._deleted === false) {
                 oldAttributes.set(item.key, item.value);
-                const attr = attributes[item.key];
+                if (attributes.hasOwnProperty(item.key)) {
-                if (attr !== undefined) {
+                  if (attributes[item.key] !== item.value) {
-                  if (attr !== item.value) {
                     if (action === 'retain') {
                       addOp();
                     }
@@ -3567,7 +3571,7 @@ class YTextEvent extends YArrayEvent {
         addOp();
         while (this._delta.length > 0) {
           let lastOp = this._delta[this._delta.length - 1];
-          if (lastOp.retain !== undefined && lastOp.attributes === undefined) {
+          if (lastOp.hasOwnProperty('retain') && !lastOp.hasOwnProperty('attributes')) {
             // retain delta's if they don't assign attributes
             this._delta.pop();
           } else {
@@ -3639,12 +3643,12 @@ class YText extends YArray {
       const currentAttributes = new Map();
       for (let i = 0; i < delta.length; i++) {
         let op = delta[i];
-        if (op.insert !== undefined) {
+        if (op.hasOwnProperty('insert')) {
-[left, right] = insertText(y, op.insert, this, left, right, currentAttributes, op.attributes || {});
+          [left, right] = insertText(y, op.insert, this, left, right, currentAttributes, op.attributes || {});
-        } else if (op.retain !== undefined) {
+        } else if (op.hasOwnProperty('retain')) {
-[left, right] = formatText(y, op.retain, this, left, right, currentAttributes, op.attributes || {});
+          [left, right] = formatText(y, op.retain, this, left, right, currentAttributes, op.attributes || {});
-        } else if (op.delete !== undefined) {
+        } else if (op.hasOwnProperty('delete')) {
-[left, right] = deleteText(y, op.delete, this, left, right, currentAttributes);
+          [left, right] = deleteText(y, op.delete, this, left, right, currentAttributes);
         }
       }
     });
@@ -3788,108 +3792,258 @@ class YText extends YArray {
 }
 
 /**
- * You can manage binding to a custom type with YXmlHook.
+ * Check if `parent` is a parent of `child`.
+ *
+ * @param {Type} parent
+ * @param {Type} child
+ * @return {Boolean} Whether `parent` is a parent of `child`.
  *
  * @public
  */
-class YXmlHook extends YMap {
+function isParentOf (parent, child) {
-  /**
+  child = child._parent;
-   * @param {String} hookName nodeName of the Dom Node.
+  while (child !== null) {
-   */
+    if (child === parent) {
-  constructor (hookName) {
+      return true
-    super();
-    this.hookName = null;
-    if (hookName !== undefined) {
-      this.hookName = hookName;
     }
+    child = child._parent;
   }
+  return false
+}
 
-  /**
+/**
-   * Creates an Item with the same effect as this Item (without position effect)
+ * Default filter method (does nothing).
-   *
+ *
-   * @private
+ * @param {String} nodeName The nodeName of the element
-   */
+ * @param {Map} attrs Map of key-value pairs that are attributes of the node.
-  _copy () {
+ * @return {Map | null} The allowed attributes or null, if the element should be
-    const struct = super._copy();
+ *                      filtered.
-    struct.hookName = this.hookName;
+ */
-    return struct
+function defaultFilter (nodeName, attrs) {
+  // TODO: implement basic filter that filters out dangerous properties!
+  return attrs
+}
+
+/**
+ *
+ */
+function filterDomAttributes (dom, filter) {
+  const attrs = new Map();
+  for (let i = dom.attributes.length - 1; i >= 0; i--) {
+    const attr = dom.attributes[i];
+    attrs.set(attr.name, attr.value);
   }
+  return filter(dom.nodeName, attrs)
+}
 
-  /**
+/**
-   * Creates a Dom Element that mirrors this YXmlElement.
+ * Applies a filter on a type.
-   *
+ *
-   * @param {Document} [_document=document] The document object (you must define
+ * @param {Y} y The Yjs instance.
-   *                                        this when calling this method in
+ * @param {DomBinding} binding The DOM binding instance that has the dom filter.
-   *                                        nodejs)
+ * @param {YXmlElement | YXmlFragment } type The type to apply the filter to.
-   * @param {Object<key:hookDefinition>} [hooks] Optional property to customize how hooks
+ *
-   *                                             are presented in the DOM
+ * @private
-   * @param {DomBinding} [binding] You should not set this property. This is
+ */
-   *                               used if DomBinding wants to create a
+function applyFilterOnType (y, binding, type) {
-   *                               association to the created DOM type
+  if (isParentOf(binding.type, type)) {
-   * @return {Element} The {@link https://developer.mozilla.org/en-US/docs/Web/API/Element|Dom Element}
+    const nodeName = type.nodeName;
-   *
+    let attributes = new Map();
-   * @public
+    if (type.getAttributes !== undefined) {
-   */
+      let attrs = type.getAttributes();
-  toDom (_document = document, hooks = {}, binding) {
+      for (let key in attrs) {
-    const hook = hooks[this.hookName];
+        attributes.set(key, attrs[key]);
-    let dom;
+      }
-    if (hook !== undefined) {
+    }
-      dom = hook.createDom(this);
+    const filteredAttributes = binding.filter(nodeName, new Map(attributes));
+    if (filteredAttributes === null) {
+      type._delete(y);
     } else {
-      dom = document.createElement(this.hookName);
+      // iterate original attributes
+      attributes.forEach((value, key) => {
+        // delete all attributes that are not in filteredAttributes
+        if (filteredAttributes.has(key) === false) {
+          type.removeAttribute(key);
+        }
+      });
     }
-    dom.setAttribute('data-yjs-hook', this.hookName);
-    createAssociation(binding, dom, this);
-    return dom
   }
+}
 
-  /**
+/**
-   * Read the next Item in a Decoder and fill this Item with the read data.
+ * Creates a Yjs type (YXml) based on the contents of a DOM Element.
-   *
+ *
-   * This is called when data is received from a remote peer.
+ * @param {Element|TextNode} element The DOM Element
-   *
+ * @param {?Document} _document Optional. Provide the global document object
-   * @param {Y} y The Yjs instance that this Item belongs to.
+ * @param {Hooks} [hooks = {}] Optional. Set of Yjs Hooks
-   * @param {BinaryDecoder} decoder The decoder object to read data from.
+ * @param {Filter} [filter=defaultFilter] Optional. Dom element filter
-   *
+ * @param {?DomBinding} binding Warning: This property is for internal use only!
-   * @private
+ * @return {YXmlElement | YXmlText}
-   */
+ */
-  _fromBinary (y, decoder) {
+function domToType (element, _document = document, hooks = {}, filter = defaultFilter, binding) {
-    const missing = super._fromBinary(y, decoder);
+  let type;
-    this.hookName = decoder.readVarString();
+  switch (element.nodeType) {
-    return missing
+    case _document.ELEMENT_NODE:
+      let hookName = null;
+      let hook;
+      // configure `hookName !== undefined` if element is a hook.
+      if (element.hasAttribute('data-yjs-hook')) {
+        hookName = element.getAttribute('data-yjs-hook');
+        hook = hooks[hookName];
+        if (hook === undefined) {
+          console.error(`Unknown hook "${hookName}". Deleting yjsHook dataset property.`);
+          delete element.removeAttribute('data-yjs-hook');
+          hookName = null;
+        }
+      }
+      if (hookName === null) {
+        // Not a hook
+        const attrs = filterDomAttributes(element, filter);
+        if (attrs === null) {
+          type = false;
+        } else {
+          type = new YXmlElement(element.nodeName);
+          attrs.forEach((val, key) => {
+            type.setAttribute(key, val);
+          });
+          type.insert(0, domsToTypes(element.childNodes, document, hooks, filter, binding));
+        }
+      } else {
+        // Is a hook
+        type = new YXmlHook(hookName);
+        hook.fillType(element, type);
+      }
+      break
+    case _document.TEXT_NODE:
+      type = new YXmlText();
+      type.insert(0, element.nodeValue);
+      break
+    default:
+      throw new Error('Can\'t transform this node type to a YXml type!')
   }
+  createAssociation(binding, element, type);
+  return type
+}
 
-  /**
+/**
-   * Transform the properties of this type to binary and write it to an
+ * Iterates items until an undeleted item is found.
-   * BinaryEncoder.
+ *
-   *
+ * @private
-   * This is called when this Item is sent to a remote peer.
+ */
-   *
+function iterateUntilUndeleted (item) {
-   * @param {BinaryEncoder} encoder The encoder to write data to.
+  while (item !== null && item._deleted) {
-   *
+    item = item._right;
-   * @private
-   */
-  _toBinary (encoder) {
-    super._toBinary(encoder);
-    encoder.writeVarString(this.hookName);
   }
+  return item
+}
 
-  /**
+/**
-   * Integrate this type into the Yjs instance.
+ * Removes an association (the information that a DOM element belongs to a
-   *
+ * type).
-   * * Save this struct in the os
+ *
-   * * This type is sent to other client
+ * @param {DomBinding} domBinding The binding object
-   * * Observer functions are fired
+ * @param {Element} dom The dom that is to be associated with type
-   *
+ * @param {YXmlElement|YXmlHook} type The type that is to be associated with dom
-   * @param {Y} y The Yjs instance
+ *
-   *
+ */
-   * @private
+function removeAssociation (domBinding, dom, type) {
-   */
+  domBinding.domToType.delete(dom);
-  _integrate (y) {
+  domBinding.typeToDom.delete(type);
-    if (this.hookName === null) {
+}
-      throw new Error('hookName must be defined!')
+
+/**
+ * Creates an association (the information that a DOM element belongs to a
+ * type).
+ *
+ * @param {DomBinding} domBinding The binding object
+ * @param {Element} dom The dom that is to be associated with type
+ * @param {YXmlElement|YXmlHook} type The type that is to be associated with dom
+ *
+ */
+function createAssociation (domBinding, dom, type) {
+  if (domBinding !== undefined) {
+    domBinding.domToType.set(dom, type);
+    domBinding.typeToDom.set(type, dom);
+  }
+}
+
+/**
+ * If oldDom is associated with a type, associate newDom with the type and
+ * forget about oldDom. If oldDom is not associated with any type, nothing happens.
+ *
+ * @param {DomBinding} domBinding The binding object
+ * @param {Element} oldDom The existing dom
+ * @param {Element} newDom The new dom object
+ */
+function switchAssociation (domBinding, oldDom, newDom) {
+  if (domBinding !== undefined) {
+    const type = domBinding.domToType.get(oldDom);
+    if (type !== undefined) {
+      removeAssociation(domBinding, oldDom, type);
+      createAssociation(domBinding, newDom, type);
     }
-    super._integrate(y);
+  }
+}
+
+/**
+ * Insert Dom Elements after one of the children of this YXmlFragment.
+ * The Dom elements will be bound to a new YXmlElement and inserted at the
+ * specified position.
+ *
+ * @param {YXmlElement} type The type in which to insert DOM elements.
+ * @param {YXmlElement|null} prev The reference node. New YxmlElements are
+ *                           inserted after this node. Set null to insert at
+ *                           the beginning.
+ * @param {Array<Element>} doms The Dom elements to insert.
+ * @param {?Document} _document Optional. Provide the global document object.
+ * @param {DomBinding} binding The dom binding
+ * @return {Array<YXmlElement>} The YxmlElements that are inserted.
+ *
+ * @private
+ */
+function insertDomElementsAfter (type, prev, doms, _document, binding) {
+  const types = domsToTypes(doms, _document, binding.opts.hooks, binding.filter, binding);
+  return type.insertAfter(prev, types)
+}
+
+function domsToTypes (doms, _document, hooks, filter, binding) {
+  const types = [];
+  for (let dom of doms) {
+    const t = domToType(dom, _document, hooks, filter, binding);
+    if (t !== false) {
+      types.push(t);
+    }
+  }
+  return types
+}
+
+/**
+ * @private
+ */
+function insertNodeHelper (yxml, prevExpectedNode, child, _document, binding) {
+  let insertedNodes = insertDomElementsAfter(yxml, prevExpectedNode, [child], _document, binding);
+  if (insertedNodes.length > 0) {
+    return insertedNodes[0]
+  } else {
+    return prevExpectedNode
+  }
+}
+
+/**
+ * Remove children until `elem` is found.
+ *
+ * @param {Element} parent The parent of `elem` and `currentChild`.
+ * @param {Element} currentChild Start removing elements with `currentChild`. If
+ *                               `currentChild` is `elem` it won't be removed.
+ * @param {Element|null} elem The elemnt to look for.
+ *
+ * @private
+ */
+function removeDomChildrenUntilElementFound (parent, currentChild, elem) {
+  while (currentChild !== elem) {
+    const del = currentChild;
+    currentChild = currentChild.nextSibling;
+    parent.removeChild(del);
   }
 }
 
@@ -4360,261 +4514,109 @@ class YXmlElement extends YXmlFragment {
   }
 }
 
-YXmlFragment._YXmlElement = YXmlElement;
-
 /**
- * Check if `parent` is a parent of `child`.
+ * You can manage binding to a custom type with YXmlHook.
- *
- * @param {Type} parent
- * @param {Type} child
- * @return {Boolean} Whether `parent` is a parent of `child`.
  *
  * @public
  */
-function isParentOf (parent, child) {
+class YXmlHook extends YMap {
-  child = child._parent;
+  /**
-  while (child !== null) {
+   * @param {String} hookName nodeName of the Dom Node.
-    if (child === parent) {
+   */
-      return true
+  constructor (hookName) {
+    super();
+    this.hookName = null;
+    if (hookName !== undefined) {
+      this.hookName = hookName;
     }
-    child = child._parent;
   }
-  return false
-}
 
-/**
+  /**
- * Default filter method (does nothing).
+   * Creates an Item with the same effect as this Item (without position effect)
- *
+   *
- * @param {String} nodeName The nodeName of the element
+   * @private
- * @param {Map} attrs Map of key-value pairs that are attributes of the node.
+   */
- * @return {Map | null} The allowed attributes or null, if the element should be
+  _copy () {
- *                      filtered.
+    const struct = super._copy();
- */
+    struct.hookName = this.hookName;
-function defaultFilter (nodeName, attrs) {
+    return struct
-  // TODO: implement basic filter that filters out dangerous properties!
-  return attrs
-}
-
-/**
- *
- */
-function filterDomAttributes (dom, filter) {
-  const attrs = new Map();
-  for (let i = dom.attributes.length - 1; i >= 0; i--) {
-    const attr = dom.attributes[i];
-    attrs.set(attr.name, attr.value);
   }
-  return filter(dom.nodeName, attrs)
-}
 
-/**
+  /**
- * Applies a filter on a type.
+   * Creates a Dom Element that mirrors this YXmlElement.
- *
+   *
- * @param {Y} y The Yjs instance.
+   * @param {Document} [_document=document] The document object (you must define
- * @param {DomBinding} binding The DOM binding instance that has the dom filter.
+   *                                        this when calling this method in
- * @param {YXmlElement | YXmlFragment } type The type to apply the filter to.
+   *                                        nodejs)
- *
+   * @param {Object<key:hookDefinition>} [hooks] Optional property to customize how hooks
- * @private
+   *                                             are presented in the DOM
- */
+   * @param {DomBinding} [binding] You should not set this property. This is
-function applyFilterOnType (y, binding, type) {
+   *                               used if DomBinding wants to create a
-  if (isParentOf(binding.type, type)) {
+   *                               association to the created DOM type
-    const nodeName = type.nodeName;
+   * @return {Element} The {@link https://developer.mozilla.org/en-US/docs/Web/API/Element|Dom Element}
-    let attributes = new Map();
+   *
-    if (type.getAttributes !== undefined) {
+   * @public
-      let attrs = type.getAttributes();
+   */
-      for (let key in attrs) {
+  toDom (_document = document, hooks = {}, binding) {
-        attributes.set(key, attrs[key]);
+    const hook = hooks[this.hookName];
-      }
+    let dom;
-    }
+    if (hook !== undefined) {
-    const filteredAttributes = binding.filter(nodeName, new Map(attributes));
+      dom = hook.createDom(this);
-    if (filteredAttributes === null) {
-      type._delete(y);
     } else {
-      // iterate original attributes
+      dom = document.createElement(this.hookName);
-      attributes.forEach((value, key) => {
-        // delete all attributes that are not in filteredAttributes
-        if (filteredAttributes.has(key) === false) {
-          type.removeAttribute(key);
-        }
-      });
     }
+    dom.setAttribute('data-yjs-hook', this.hookName);
+    createAssociation(binding, dom, this);
+    return dom
   }
-}
 
-/**
+  /**
- * Creates a Yjs type (YXml) based on the contents of a DOM Element.
+   * Read the next Item in a Decoder and fill this Item with the read data.
- *
+   *
- * @param {Element|TextNode} element The DOM Element
+   * This is called when data is received from a remote peer.
- * @param {?Document} _document Optional. Provide the global document object
+   *
- * @param {Hooks} [hooks = {}] Optional. Set of Yjs Hooks
+   * @param {Y} y The Yjs instance that this Item belongs to.
- * @param {Filter} [filter=defaultFilter] Optional. Dom element filter
+   * @param {BinaryDecoder} decoder The decoder object to read data from.
- * @param {?DomBinding} binding Warning: This property is for internal use only!
+   *
- * @return {YXmlElement | YXmlText}
+   * @private
- */
+   */
-function domToType (element, _document = document, hooks = {}, filter = defaultFilter, binding) {
+  _fromBinary (y, decoder) {
-  let type;
+    const missing = super._fromBinary(y, decoder);
-  switch (element.nodeType) {
+    this.hookName = decoder.readVarString();
-    case _document.ELEMENT_NODE:
+    return missing
-      let hookName = null;
-      let hook;
-      // configure `hookName !== undefined` if element is a hook.
-      if (element.hasAttribute('data-yjs-hook')) {
-        hookName = element.getAttribute('data-yjs-hook');
-        hook = hooks[hookName];
-        if (hook === undefined) {
-          console.error(`Unknown hook "${hookName}". Deleting yjsHook dataset property.`);
-          delete element.removeAttribute('data-yjs-hook');
-          hookName = null;
-        }
-      }
-      if (hookName === null) {
-        // Not a hook
-        const attrs = filterDomAttributes(element, filter);
-        if (attrs === null) {
-          type = false;
-        } else {
-          type = new YXmlElement(element.nodeName);
-          attrs.forEach((val, key) => {
-            type.setAttribute(key, val);
-          });
-          type.insert(0, domsToTypes(element.childNodes, document, hooks, filter, binding));
-        }
-      } else {
-        // Is a hook
-        type = new YXmlHook(hookName);
-        hook.fillType(element, type);
-      }
-      break
-    case _document.TEXT_NODE:
-      type = new YXmlText();
-      type.insert(0, element.nodeValue);
-      break
-    default:
-      throw new Error('Can\'t transform this node type to a YXml type!')
   }
-  createAssociation(binding, element, type);
-  return type
-}
 
-/**
+  /**
- * Iterates items until an undeleted item is found.
+   * Transform the properties of this type to binary and write it to an
- *
+   * BinaryEncoder.
- * @private
+   *
- */
+   * This is called when this Item is sent to a remote peer.
-function iterateUntilUndeleted (item) {
+   *
-  while (item !== null && item._deleted) {
+   * @param {BinaryEncoder} encoder The encoder to write data to.
-    item = item._right;
+   *
+   * @private
+   */
+  _toBinary (encoder) {
+    super._toBinary(encoder);
+    encoder.writeVarString(this.hookName);
   }
-  return item
-}
 
-/**
+  /**
- * Removes an association (the information that a DOM element belongs to a
+   * Integrate this type into the Yjs instance.
- * type).
+   *
- *
+   * * Save this struct in the os
- * @param {DomBinding} domBinding The binding object
+   * * This type is sent to other client
- * @param {Element} dom The dom that is to be associated with type
+   * * Observer functions are fired
- * @param {YXmlElement|YXmlHook} type The type that is to be associated with dom
+   *
- *
+   * @param {Y} y The Yjs instance
- */
+   *
-function removeAssociation (domBinding, dom, type) {
+   * @private
-  domBinding.domToType.delete(dom);
+   */
-  domBinding.typeToDom.delete(type);
+  _integrate (y) {
-}
+    if (this.hookName === null) {
-
+      throw new Error('hookName must be defined!')
-/**
- * Creates an association (the information that a DOM element belongs to a
- * type).
- *
- * @param {DomBinding} domBinding The binding object
- * @param {Element} dom The dom that is to be associated with type
- * @param {YXmlElement|YXmlHook} type The type that is to be associated with dom
- *
- */
-function createAssociation (domBinding, dom, type) {
-  if (domBinding !== undefined) {
-    domBinding.domToType.set(dom, type);
-    domBinding.typeToDom.set(type, dom);
-  }
-}
-
-/**
- * If oldDom is associated with a type, associate newDom with the type and
- * forget about oldDom. If oldDom is not associated with any type, nothing happens.
- *
- * @param {DomBinding} domBinding The binding object
- * @param {Element} oldDom The existing dom
- * @param {Element} newDom The new dom object
- */
-function switchAssociation (domBinding, oldDom, newDom) {
-  if (domBinding !== undefined) {
-    const type = domBinding.domToType.get(oldDom);
-    if (type !== undefined) {
-      removeAssociation(domBinding, oldDom, type);
-      createAssociation(domBinding, newDom, type);
     }
-  }
+    super._integrate(y);
-}
-
-/**
- * Insert Dom Elements after one of the children of this YXmlFragment.
- * The Dom elements will be bound to a new YXmlElement and inserted at the
- * specified position.
- *
- * @param {YXmlElement} type The type in which to insert DOM elements.
- * @param {YXmlElement|null} prev The reference node. New YxmlElements are
- *                           inserted after this node. Set null to insert at
- *                           the beginning.
- * @param {Array<Element>} doms The Dom elements to insert.
- * @param {?Document} _document Optional. Provide the global document object.
- * @param {DomBinding} binding The dom binding
- * @return {Array<YXmlElement>} The YxmlElements that are inserted.
- *
- * @private
- */
-function insertDomElementsAfter (type, prev, doms, _document, binding) {
-  const types = domsToTypes(doms, _document, binding.opts.hooks, binding.filter, binding);
-  return type.insertAfter(prev, types)
-}
-
-function domsToTypes (doms, _document, hooks, filter, binding) {
-  const types = [];
-  for (let dom of doms) {
-    const t = domToType(dom, _document, hooks, filter, binding);
-    if (t !== false) {
-      types.push(t);
-    }
-  }
-  return types
-}
-
-/**
- * @private
- */
-function insertNodeHelper (yxml, prevExpectedNode, child, _document, binding) {
-  let insertedNodes = insertDomElementsAfter(yxml, prevExpectedNode, [child], _document, binding);
-  if (insertedNodes.length > 0) {
-    return insertedNodes[0]
-  } else {
-    return prevExpectedNode
-  }
-}
-
-/**
- * Remove children until `elem` is found.
- *
- * @param {Element} parent The parent of `elem` and `currentChild`.
- * @param {Element} currentChild Start removing elements with `currentChild`. If
- *                               `currentChild` is `elem` it won't be removed.
- * @param {Element|null} elem The elemnt to look for.
- *
- * @private
- */
-function removeDomChildrenUntilElementFound (parent, currentChild, elem) {
-  while (currentChild !== elem) {
-    const del = currentChild;
-    currentChild = currentChild.nextSibling;
-    parent.removeChild(del);
   }
 }
 
@@ -4662,6 +4664,9 @@ class YXmlText extends YText {
   }
 }
 
+YXmlFragment._YXmlElement = YXmlElement;
+YXmlFragment._YXmlHook = YXmlHook;
+
 const structs = new Map();
 const references = new Map();
 
@@ -5310,6 +5315,7 @@ function typeObserver (events) {
       if (dom !== undefined && dom !== false) {
         if (yxml.constructor === YXmlText) {
           dom.nodeValue = yxml.toString();
+          // TODO: use hasOwnProperty instead of === undefined check
         } else if (event.attributesChanged !== undefined) {
           // update attributes
           event.attributesChanged.forEach(attributeName => {
@@ -5492,7 +5498,7 @@ function domObserver (mutations, _document) {
           let parent = dom;
           let yParent;
           do {
-            parent = parent.parentElement;
+            parent = parent.parentNode;
             yParent = this.domToType.get(parent);
           } while (yParent === undefined && parent !== null)
           if (yParent !== false && yParent !== undefined && yParent.constructor !== YXmlHook) {
@@ -5657,11 +5663,12 @@ class DomBinding extends Binding {
   destroy () {
     this.domToType = null;
     this.typeToDom = null;
-    this.type.unobserveDeep(this._typeObserver);
+    this.type.unobserve(this._typeObserver);
     this._mutationObserver.disconnect();
     const y = this.type._y;
     y.off('beforeTransaction', this._beforeTransactionHandler);
     y.off('beforeObserverCalls', this._beforeObserverCallsHandler);
+    y.off('afterObserverCalls', this._afterObserverCallsHandler);
     y.off('afterTransaction', this._afterTransactionHandler);
     super.destroy();
   }
@@ -5694,7 +5701,7 @@ class DomBinding extends Binding {
  * @param {Object} opts Connector definition
  * @param {AbstractPersistence} persistence Persistence adapter instance
  */
-class Y extends NamedEventHandler {
+class Y$1 extends NamedEventHandler {
   constructor (room, opts, persistence, conf = {}) {
     super();
     this.gcEnabled = conf.gc || false;
@@ -5729,7 +5736,7 @@ class Y extends NamedEventHandler {
     this.connected = false;
     let initConnection = () => {
       if (opts != null) {
-        this.connector = new Y[opts.connector.name](this, opts.connector);
+        this.connector = new Y$1[opts.connector.name](this, opts.connector);
         this.connected = true;
         this.emit('connectorReady');
       }
@@ -5937,11 +5944,11 @@ class Y extends NamedEventHandler {
   }
 }
 
-Y.extend = function extendYjs () {
+Y$1.extend = function extendYjs () {
   for (var i = 0; i < arguments.length; i++) {
     var f = arguments[i];
     if (typeof f === 'function') {
-      f(Y);
+      f(Y$1);
     } else {
       throw new Error('Expected a function!')
     }
@@ -6235,14 +6242,7 @@ function plural(ms, n, name) {
   return Math.ceil(ms / n) + ' ' + name + 's';
 }
 
-var ms$1 = /*#__PURE__*/Object.freeze({
+var debug$1 = createCommonjsModule(function (module, exports) {
-  default: ms,
-  __moduleExports: ms
-});
-
-var require$$0 = ( ms$1 && ms ) || ms$1;
-
-var debug = createCommonjsModule(function (module, exports) {
 /**
  * This is the common logic for both the Node.js and web browser
  * implementations of `debug()`.
@@ -6255,7 +6255,7 @@ exports.coerce = coerce;
 exports.disable = disable;
 exports.enable = enable;
 exports.enabled = enabled;
-exports.humanize = require$$0;
+exports.humanize = ms;
 
 /**
  * The currently active debug mode names, and names to skip.
@@ -6314,8 +6314,8 @@ function createDebug(namespace) {
 
     // set `diff` timestamp
     var curr = +new Date();
-    var ms = curr - (prevTime || curr);
+    var ms$$1 = curr - (prevTime || curr);
-    self.diff = ms;
+    self.diff = ms$$1;
     self.prev = prevTime;
     self.curr = curr;
     prevTime = curr;
@@ -6445,29 +6445,15 @@ function coerce(val) {
   return val;
 }
 });
-var debug_1 = debug.coerce;
-var debug_2 = debug.disable;
-var debug_3 = debug.enable;
-var debug_4 = debug.enabled;
-var debug_5 = debug.humanize;
-var debug_6 = debug.names;
-var debug_7 = debug.skips;
-var debug_8 = debug.formatters;
 
-var debug$1 = /*#__PURE__*/Object.freeze({
+var debug_1 = debug$1.coerce;
-  default: debug,
+var debug_2 = debug$1.disable;
-  __moduleExports: debug,
+var debug_3 = debug$1.enable;
-  coerce: debug_1,
+var debug_4 = debug$1.enabled;
-  disable: debug_2,
+var debug_5 = debug$1.humanize;
-  enable: debug_3,
+var debug_6 = debug$1.names;
-  enabled: debug_4,
+var debug_7 = debug$1.skips;
-  humanize: debug_5,
+var debug_8 = debug$1.formatters;
-  names: debug_6,
-  skips: debug_7,
-  formatters: debug_8
-});
-
-var require$$0$1 = ( debug$1 && debug ) || debug$1;
 
 var browser = createCommonjsModule(function (module, exports) {
 /**
@@ -6476,7 +6462,7 @@ var browser = createCommonjsModule(function (module, exports) {
  * Expose `debug()` as the module.
  */
 
-exports = module.exports = require$$0$1;
+exports = module.exports = debug$1;
 exports.log = log;
 exports.formatArgs = formatArgs;
 exports.save = save;
@@ -6656,6 +6642,7 @@ function localstorage() {
   } catch (e) {}
 }
 });
+
 var browser_1 = browser.log;
 var browser_2 = browser.formatArgs;
 var browser_3 = browser.save;
@@ -7202,25 +7189,25 @@ class QuillBinding extends Binding {
 }
 
 // TODO: The following assignments should be moved to yjs-dist
-Y.AbstractConnector = AbstractConnector;
+Y$1.AbstractConnector = AbstractConnector;
-Y.AbstractPersistence = AbstractPersistence;
+Y$1.AbstractPersistence = AbstractPersistence;
-Y.Array = YArray;
+Y$1.Array = YArray;
-Y.Map = YMap;
+Y$1.Map = YMap;
-Y.Text = YText;
+Y$1.Text = YText;
-Y.XmlElement = YXmlElement;
+Y$1.XmlElement = YXmlElement;
-Y.XmlFragment = YXmlFragment;
+Y$1.XmlFragment = YXmlFragment;
-Y.XmlText = YXmlText;
+Y$1.XmlText = YXmlText;
-Y.XmlHook = YXmlHook;
+Y$1.XmlHook = YXmlHook;
 
-Y.TextareaBinding = TextareaBinding;
+Y$1.TextareaBinding = TextareaBinding;
-Y.QuillBinding = QuillBinding;
+Y$1.QuillBinding = QuillBinding;
-Y.DomBinding = DomBinding;
+Y$1.DomBinding = DomBinding;
 
 DomBinding.domToType = domToType;
 DomBinding.domsToTypes = domsToTypes;
 DomBinding.switchAssociation = switchAssociation;
 
-Y.utils = {
+Y$1.utils = {
   BinaryDecoder,
   UndoManager,
   getRelativePosition,
@@ -7231,9 +7218,9 @@ Y.utils = {
   fromBinary
 };
 
-Y.debug = browser;
+Y$1.debug = browser;
 browser.formatters.Y = messageToString;
 browser.formatters.y = messageToRoomname;
 
-module.exports = Y;
+module.exports = Y$1;
 //# sourceMappingURL=y.node.js.map