ProseMirror Setup

Setup

Step 1: Add Comment components

Add the Velt Comments component to the root of your app.
This component is required to render comments in your app.
Set the text mode prop to false to hide the default text comment tool.

React / Next.js
Other Frameworks

<VeltProvider apiKey="API_KEY">
  <VeltComments textMode={false} />
</VeltProvider>

<body>
  <velt-comments text-mode="false"></velt-comments>
</body>

Step 2: Install the Velt ProseMirror extension

npm i @veltdev/prosemirror-velt-comments prosemirror-model prosemirror-state prosemirror-view

For the examples below, also install the standard ProseMirror example packages:

npm i prosemirror-schema-basic prosemirror-example-setup

Step 3: Configure the ProseMirror editor with the Velt Comments plugin

Add VeltCommentsPlugin to the plugins array when creating your EditorState.

React / Next.js
Other Frameworks

import { useEffect, useRef } from 'react';
import { schema } from 'prosemirror-schema-basic';
import { exampleSetup } from 'prosemirror-example-setup';
import { EditorState } from 'prosemirror-state';
import { EditorView } from 'prosemirror-view';
import { VeltCommentsPlugin } from '@veltdev/prosemirror-velt-comments';

const EDITOR_ID = 'my-editor';

function ProseMirrorEditor() {
  const containerRef = useRef(null);
  const viewRef = useRef(null);

  useEffect(() => {
    if (!containerRef.current) return;

    const state = EditorState.create({
      schema,
      plugins: [
        ...exampleSetup({ schema }),
        VeltCommentsPlugin({ editorId: EDITOR_ID }),
      ],
    });

    const view = new EditorView(containerRef.current, { state });
    viewRef.current = view;

    return () => {
      view.destroy();
      viewRef.current = null;
    };
  }, []);

  return <div ref={containerRef} />;
}

import { schema } from 'prosemirror-schema-basic';
import { exampleSetup } from 'prosemirror-example-setup';
import { EditorState } from 'prosemirror-state';
import { EditorView } from 'prosemirror-view';
import { VeltCommentsPlugin } from '@veltdev/prosemirror-velt-comments';

const state = EditorState.create({
  schema,
  plugins: [
    ...exampleSetup({ schema }),
    VeltCommentsPlugin({ editorId: 'my-editor' }),
  ],
});

const view = new EditorView(document.querySelector('#editor'), { state });

Step 4: Add a comment button to your ProseMirror editor

Add a button that users can click to add comments after selecting text in the ProseMirror editor. Important: Use onMouseDown with preventDefault() so the browser does not move focus away from the editor before addComment reads the current selection.

React / Next.js
Other Frameworks

import { addComment } from '@veltdev/prosemirror-velt-comments';

const handleAddComment = () => {
  if (!viewRef.current) return;

  addComment({
    editor: viewRef.current,
    editorId: EDITOR_ID,
  });
};

<button
  onMouseDown={(event) => event.preventDefault()}
  onClick={handleAddComment}
>
  Add Comment
</button>

import { addComment } from '@veltdev/prosemirror-velt-comments';

const addCommentButton = document.querySelector('#add-comment');

addCommentButton.addEventListener('mousedown', (event) => {
  event.preventDefault();
});

addCommentButton.addEventListener('click', () => {
  addComment({ editor: view, editorId: 'my-editor' });
});

Step 5: Call `addComment` to add a comment

Call this method to add a comment to selected text in the ProseMirror editor.
Params: AddCommentRequest. It has the following properties:
- editor: ProseMirror EditorView.
- editorId: Id of the editor. Use this if you have multiple ProseMirror editors on the same page. (optional)
- context: Add custom metadata to the Comment Annotation. Learn more. (optional)

React / Next.js
Other Frameworks

import { addComment } from '@veltdev/prosemirror-velt-comments';

const addCommentRequest = {
  editor: viewRef.current,
  editorId: 'EDITOR_ID',
  context: {
    storyId: 'story-id',
    storyName: 'story-name',
  },
};

addComment(addCommentRequest);

import { addComment } from '@veltdev/prosemirror-velt-comments';

const addCommentRequest = {
  editor: view,
  editorId: 'EDITOR_ID',
  context: {
    storyId: 'story-id',
    storyName: 'story-name',
  },
};

addComment(addCommentRequest);

Step 6: Render comments in ProseMirror editor

Get the comment data from Velt SDK and render it in the ProseMirror editor.
Params: RenderCommentsRequest. It has the following properties:
- editor: ProseMirror EditorView.
- editorId: Id of the editor. Use this if you have multiple ProseMirror editors on the same page. (optional)
- commentAnnotations: Array of Comment Annotation objects.

React / Next.js
Other Frameworks

import { useEffect } from 'react';
import { useCommentAnnotations } from '@veltdev/react';
import { renderComments } from '@veltdev/prosemirror-velt-comments';

const commentAnnotations = useCommentAnnotations();

useEffect(() => {
  if (!viewRef.current) return;

  renderComments({
    editor: viewRef.current,
    editorId: 'EDITOR_ID',
    commentAnnotations: commentAnnotations ?? [],
  });
}, [commentAnnotations]);

import { renderComments } from '@veltdev/prosemirror-velt-comments';

const commentElement = Velt.getCommentElement();
commentElement.getAllCommentAnnotations().subscribe((annotations) => {
  renderComments({
    editor: view,
    editorId: 'EDITOR_ID',
    commentAnnotations: annotations,
  });
});

Step 7: Re-apply ProseMirror comment highlights (optional)

ProseMirror renders comment highlights as view-only overlay elements.
The integration does not write Velt comment marks into your ProseMirror schema or saved document.
Save your ProseMirror document normally. After you recreate the EditorView or replace document content, call renderComments again.

const json = view.state.doc.toJSON();
// Save json to your backend.

renderComments({
  editor: view,
  editorId: 'EDITOR_ID',
  commentAnnotations,
});

Step 8: Style the commented text

You can style the commented text by adding CSS for the velt-comment-text element.
Use the comment-available attribute to apply styles only after comment data has loaded.

velt-comment-text[comment-available="true"] {
  background-color: rgba(255, 255, 0, 0.3);
  border-bottom: 2px solid #ffcc00;
  cursor: pointer;
}

velt-comment-text[comment-available="true"]:hover {
  background-color: rgba(255, 255, 0, 0.5);
}

velt-comment-text.velt-comment-selected {
  background-color: rgba(255, 255, 0, 0.5);
}

Complete Example

APIs

VeltCommentsPlugin()

Creates the ProseMirror plugin that powers Velt comments. Add it to your editor state’s plugins array.

Params: config?: VeltCommentsPluginConfig
Returns: ProseMirror Plugin

React / Next.js
Other Frameworks

import { schema } from 'prosemirror-schema-basic';
import { exampleSetup } from 'prosemirror-example-setup';
import { EditorState } from 'prosemirror-state';
import { VeltCommentsPlugin } from '@veltdev/prosemirror-velt-comments';

const state = EditorState.create({
  schema,
  plugins: [
    ...exampleSetup({ schema }),
    VeltCommentsPlugin({ editorId: 'my-editor' }),
  ],
});

import { VeltCommentsPlugin } from '@veltdev/prosemirror-velt-comments';

VeltCommentsPlugin({ editorId: 'my-editor' });

addComment()

Creates a comment annotation for the currently selected text in the editor.

Signature: async (request: AddCommentRequest) => Promise<void>
Params: request: AddCommentRequest
Returns: Promise<void>

React / Next.js
Other Frameworks

import { addComment } from '@veltdev/prosemirror-velt-comments';

const handleAddComment = () => {
  if (!viewRef.current) return;
  addComment({ editor: viewRef.current, editorId: 'my-editor' });
};

<button
  onMouseDown={(event) => event.preventDefault()}
  onClick={handleAddComment}
>
  Comment
</button>

import { addComment } from '@veltdev/prosemirror-velt-comments';

addComment({
  editor: view,
  editorId: 'my-editor',
  context: { customData: 'value' },
});

renderComments()

Renders and highlights comment annotations in the ProseMirror editor.

Signature: (request: RenderCommentsRequest) => void
Params: request: RenderCommentsRequest
Returns: void

React / Next.js
Other Frameworks

import { useEffect } from 'react';
import { useCommentAnnotations } from '@veltdev/react';
import { renderComments } from '@veltdev/prosemirror-velt-comments';

const annotations = useCommentAnnotations();

useEffect(() => {
  if (!viewRef.current) return;

  renderComments({
    editor: viewRef.current,
    editorId: 'my-editor',
    commentAnnotations: annotations ?? [],
  });
}, [annotations]);

import { renderComments } from '@veltdev/prosemirror-velt-comments';

const commentElement = Velt.getCommentElement();
commentElement.getAllCommentAnnotations().subscribe((annotations) => {
  renderComments({
    editor: view,
    editorId: 'my-editor',
    commentAnnotations: annotations,
  });
});

veltCommentsPluginKey

The ProseMirror PluginKey used by the package. Use it only for advanced inspection of plugin state.

Params: none
Returns: PluginKey

import { veltCommentsPluginKey } from '@veltdev/prosemirror-velt-comments';

const state = veltCommentsPluginKey.getState(view.state);
const anchors = state?.anchors;

Get Started

Agentic Setup

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Miscellaneous

ProseMirror Setup

Setup

Step 1: Add Comment components

Step 2: Install the Velt ProseMirror extension

Step 3: Configure the ProseMirror editor with the Velt Comments plugin

Step 4: Add a comment button to your ProseMirror editor

Step 5: Call `addComment` to add a comment

Step 6: Render comments in ProseMirror editor

Step 7: Re-apply ProseMirror comment highlights (optional)

Step 8: Style the commented text

Complete Example

APIs

VeltCommentsPlugin()

addComment()

renderComments()

veltCommentsPluginKey

​Setup

​Step 1: Add Comment components

​Step 2: Install the Velt ProseMirror extension

​Step 3: Configure the ProseMirror editor with the Velt Comments plugin

​Step 4: Add a comment button to your ProseMirror editor

​Step 5: Call addComment to add a comment

​Step 6: Render comments in ProseMirror editor

​Step 7: Re-apply ProseMirror comment highlights (optional)

​Step 8: Style the commented text

​Complete Example

​APIs

​VeltCommentsPlugin()

​addComment()

​renderComments()

​veltCommentsPluginKey

Setup

Step 1: Add Comment components

Step 2: Install the Velt ProseMirror extension

Step 3: Configure the ProseMirror editor with the Velt Comments plugin

Step 4: Add a comment button to your ProseMirror editor

Step 5: Call `addComment` to add a comment

Step 6: Render comments in ProseMirror editor

Step 7: Re-apply ProseMirror comment highlights (optional)

Step 8: Style the commented text

Complete Example

APIs

VeltCommentsPlugin()

addComment()

renderComments()

veltCommentsPluginKey