fix empty type name

README.md

@@ -77,8 +77,6 @@ Sponsorship also comes with special perks! [![Become a Sponsor](https://img.shie
   * [Document Updates](#Document-Updates)
   * [Relative Positions](#Relative-Positions)
   * [Y.UndoManager](#YUndoManager)
-* [Miscellaneous](#Miscellaneous)
-  * [Typescript Declarations](#Typescript-Declarations)
 * [Yjs CRDT Algorithm](#Yjs-CRDT-Algorithm)
 * [License and Author](#License-and-Author)
 
@@ -867,24 +865,6 @@ undoManager.on('stack-item-popped', event => {
 })
 ```
 
-## Miscellaneous
-
-### Typescript Declarations
-
-Yjs has type descriptions. But until [this
-ticket](https://github.com/Microsoft/TypeScript/issues/7546) is fixed, this is
-how you can make use of Yjs type declarations.
-
-```json
-{
-  "compilerOptions": {
-    "allowJs": true,
-    "checkJs": true,
-  },
-  "maxNodeModuleJsDepth": 5
-}
-```
-
 ## Yjs CRDT Algorithm
 
 *Conflict-free replicated data types* (CRDT) for collaborative editing are an

src/utils/Doc.js

@@ -126,45 +126,45 @@ export class Doc extends Observable {
 
   /**
    * @template T
-   * @param {string} name
+   * @param {string} [name]
    * @return {YArray<T>}
    *
    * @public
    */
-  getArray (name) {
+  getArray (name = '') {
     // @ts-ignore
     return this.get(name, YArray)
   }
 
   /**
-   * @param {string} name
+   * @param {string} [name]
    * @return {YText}
    *
    * @public
    */
-  getText (name) {
+  getText (name = '') {
     // @ts-ignore
     return this.get(name, YText)
   }
 
   /**
-   * @param {string} name
+   * @param {string} [name]
    * @return {YMap<any>}
    *
    * @public
    */
-  getMap (name) {
+  getMap (name = '') {
     // @ts-ignore
     return this.get(name, YMap)
   }
 
   /**
-   * @param {string} name
+   * @param {string} [name]
    * @return {YXmlFragment}
    *
    * @public
    */
-  getXmlFragment (name) {
+  getXmlFragment (name = '') {
     // @ts-ignore
     return this.get(name, YXmlFragment)
   }

src/utils/encoding.js

@@ -152,7 +152,7 @@ export const readClientsStructRefs = (decoder, clientRefs, doc) => {
 
         const struct = new Item(
           createID(client, clock), null, origin, null, rightOrigin,
-          canCopyParentInfo && !hasParentYKey ? decoder.readLeftID() : (parentYKey ? doc.get(parentYKey) : null), // parent
+          canCopyParentInfo && !hasParentYKey ? decoder.readLeftID() : (parentYKey !== null ? doc.get(parentYKey) : null), // parent
           canCopyParentInfo && (info & binary.BIT6) === binary.BIT6 ? decoder.readString() : null, // parentSub
           /** @type {AbstractContent} */ (readItemContent(decoder, info)) // item content
         )

tests/doc.tests.js

@@ -17,3 +17,16 @@ export const testClientIdDuplicateChange = tc => {
   Y.applyUpdate(doc2, Y.encodeStateAsUpdate(doc1))
   t.assert(doc2.clientID !== doc1.clientID)
 }
+
+/**
+ * @param {t.TestCase} tc
+ */
+export const testGetTypeEmptyId = tc => {
+  const doc1 = new Y.Doc()
+  doc1.getText('').insert(0, 'h')
+  doc1.getText().insert(1, 'i')
+  const doc2 = new Y.Doc()
+  Y.applyUpdate(doc2, Y.encodeStateAsUpdate(doc1))
+  t.assert(doc2.getText().toString() === 'hi')
+  t.assert(doc2.getText('').toString() === 'hi')
+}

tests/index.js

@@ -6,7 +6,7 @@ import * as xml from './y-xml.tests.js'
 import * as encoding from './encoding.tests.js'
 import * as undoredo from './undo-redo.tests.js'
 import * as compatibility from './compatibility.tests.js'
-import * as consistency from './consistency.tests.js'
+import * as doc from './doc.tests.js'
 
 import { runTests } from 'lib0/testing.js'
 import { isBrowser, isNode } from 'lib0/environment.js'
@@ -16,7 +16,7 @@ if (isBrowser) {
   log.createVConsole(document.body)
 }
 runTests({
-  map, array, text, xml, consistency, encoding, undoredo, compatibility
+  map, array, text, xml, doc, encoding, undoredo, compatibility
 }).then(success => {
   /* istanbul ignore next */
   if (isNode) {