Use mfm-js for MFM parsing (#7415)

* wip

* Update mfm.ts

* wip

* update mfmjs

* refactor

* nanka

* Update mfm.ts

* Update to-html.ts

* Update to-html.ts

* wip

* fix test

* fix test

src/remote/activitypub/renderer/person.ts

@@ -1,10 +1,10 @@
 import { URL } from 'url';
+import * as mfm from 'mfm-js';
 import renderImage from './image';
 import renderKey from './key';
 import config from '@/config';
 import { ILocalUser } from '../../../models/entities/user';
 import { toHtml } from '../../../mfm/to-html';
-import { parse } from '../../../mfm/parse';
 import { getEmojis } from './note';
 import renderEmoji from './emoji';
 import { IIdentifier } from '../models/identifier';
@@ -66,7 +66,7 @@ export async function renderPerson(user: ILocalUser) {
 		url: `${config.url}/@${user.username}`,
 		preferredUsername: user.username,
 		name: user.name,
-		summary: toHtml(parse(profile.description)),
+		summary: profile.description ? toHtml(mfm.parse(profile.description)) : null,
 		icon: avatar ? renderImage(avatar) : null,
 		image: banner ? renderImage(banner) : null,
 		tag,