test.js

// Enable commands for TXTextControl
TXTextControl.enableCommands();

// Add event listeners for comment changes and deletions
TXTextControl.addEventListener("commentChanged", preventComment);
TXTextControl.addEventListener("commentDeleted", preventComment);

// Function to prevent comment changes from other authors
function preventComment(comment) {
  TXTextControl.getUserNames(userNames => {
    if (comment.commentedText.userName !== userNames[0]) {
      TXTextControl.undo(() => {
        TXTextControl.sendCommand(TXTextControl.Command.CommentsViewerRefresh);
        alert("Comments from other authors cannot be changed!");
      });
    }
  });
}