Created two API endpoints.

api/shareholders.js

@@ -0,0 +1,18 @@
+const express = require('express');
+const router = express.Router();
+const { getConnection, getShareholders } = require("../libs/mysql.js")
+
+router.get('/', async (req, res) => {
+  const connection = await getConnection()
+  const shareholders = await getShareholders(connection)
+  connection.end()
+
+  if (!shareholders[0]) {
+    return res.status(500).send({message: "There are no shareholders in the databse."})
+  }
+
+  return res.status(200).send(shareholders)
+});
+
+module.exports = router;
+