Introduce processor

src/server/api/common/text/elements/mention.ts

@@ -0,0 +1,17 @@
+/**
+ * Mention
+ */
+import parseAcct from '../../../../common/user/parse-acct';
+
+module.exports = text => {
+	const match = text.match(/^(?:@[a-zA-Z0-9\-]+){1,2}/);
+	if (!match) return null;
+	const mention = match[0];
+	const { username, host } = parseAcct(mention.substr(1));
+	return {
+		type: 'mention',
+		content: mention,
+		username,
+		host
+	};
+};