add content to the collaboration extension page

docs/src/demos/Extensions/Collaboration/index.vue

@@ -0,0 +1,56 @@
+<template>
+  <editor-content :editor="editor" />
+</template>
+
+<script>
+import { Editor, EditorContent } from '@tiptap/vue-starter-kit'
+import Document from '@tiptap/extension-document'
+import Paragraph from '@tiptap/extension-paragraph'
+import Text from '@tiptap/extension-text'
+import Collaboration from '@tiptap/extension-collaboration'
+import * as Y from 'yjs'
+import { WebrtcProvider } from 'y-webrtc'
+
+export default {
+  components: {
+    EditorContent,
+  },
+
+  data() {
+    return {
+      documentName: 'tiptap-collaboration-extension',
+      ydoc: null,
+      provider: null,
+      type: null,
+      editor: null,
+    }
+  },
+
+  mounted() {
+    this.ydoc = new Y.Doc()
+    this.provider = new WebrtcProvider(this.documentName, this.ydoc)
+    this.type = this.ydoc.getXmlFragment('prosemirror')
+
+    this.editor = new Editor({
+      // TODO: This is added by every new user.
+      // content: `
+      //   <p>Example Text</p>
+      // `,
+      extensions: [
+        Document(),
+        Paragraph(),
+        Text(),
+        Collaboration({
+          provider: this.provider,
+          type: this.type,
+        }),
+      ],
+    })
+  },
+
+  beforeDestroy() {
+    this.editor.destroy()
+    this.provider.destroy()
+  },
+}
+</script>