import { AttachmentForScreenReaderMiddleware } from 'botframework-webchat-api'; import React from 'react'; import AdaptiveCardAttachment from './AttachmentForScreenReader/AdaptiveCardAttachment'; import RichCardAttachment from './AttachmentForScreenReader/RichCardAttachment'; const RICH_CARD_CONTENT_TYPES = [ 'application/vnd.microsoft.card.animation', 'application/vnd.microsoft.card.audio', 'application/vnd.microsoft.card.hero', 'application/vnd.microsoft.card.oauth', 'application/vnd.microsoft.card.receipt', 'application/vnd.microsoft.card.signin', 'application/vnd.microsoft.card.thumbnail', 'application/vnd.microsoft.card.video' ]; export default function createAdaptiveCardsAttachmentMiddleware(): AttachmentForScreenReaderMiddleware { return () => next => (...args) => { const [ { attachment: { content, contentType } } ] = args; return content && RICH_CARD_CONTENT_TYPES.includes(contentType) ? () => : content && contentType === 'application/vnd.microsoft.card.adaptive' ? () => : next(...args); }; }