Authenticated route in Koa using Passport. Whole file is available https://github.com/AndrejGajdos/auth-flow-spa-node-react/blob/master/script/controllers/auth.js

auth.js

exports.getLoggedUser = async (ctx) => {
  if (ctx.isAuthenticated()) {
    const reqUserId = ctx.req.user.id;
    let user = null;
    await getAsync('usersMockDatabase').then((users) => {
      user = JSON.parse(users).find(currUser => currUser.id === reqUserId);
    });
    if (user) {
      delete user.password;
      ctx.response.body = user;
    } else {
      const statusCode = 500;
      ctx.throw(statusCode, "User doesn't exist");
    }
  } else {
    ctx.redirect('/');
  }
};