index.js - CometChatMessageList - Mention Chat App

index.js

...
showToastForMentionMessage = (message) => { 
  if (message.text.includes(`@${this.state.loggedInUser.name}`)) {
    const toastMessage = `You was tagged by ${message.sender.name}`;
    this.context.setToastMessage("success", toastMessage);
  }
}

//callback for listener functions
messageUpdated = (key, message, group, options) => {
  ...
  case enums.TEXT_MESSAGE_RECEIVED:
  case enums.MEDIA_MESSAGE_RECEIVED:
    this.showToastForMentionMessage(message);
    this.onMessageReceived(message);
    break;
   ...
};
...