one file Koa admin panel

index.js

const AdminBro = require('admin-bro')
const mongoose = require('mongoose')
const AdminBroMongoose = require('@admin-bro/mongoose')
const { buildAuthenticatedRouter } = require('@admin-bro/koa')
const passwordFeature = require('@admin-bro/passwords')
const argon2 = require('argon2')

const Koa = require('koa')
const app = new Koa()
app.keys = ['super-secret1', 'super-secret2'
]
AdminBro.registerAdapter(AdminBroMongoose)

const User = mongoose.model('User', {
  email: { type: String, required: true },
  encryptedPassword: { type: String, required: true },
});

const run = async () => {
  const mongoose = require('mongoose')
  await mongoose.connect('mongodb://localhost:27017/test', {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  });

  const adminBro = new AdminBro({
    resources: [{
      resource: User,
      options: {
        properties: { encryptedPassword: { isVisible: false } },
      },
      features: [passwordFeature({
        properties: { encryptedPassword: 'encryptedPassword' },
        hash: argon2.hash,
      })]
    }],
    rootPath: '/admin',
  })
  adminBro.watch()
  
  const router = buildAuthenticatedRouter(adminBro, app, {
    authenticate: async (email, password) => {
      const user = email && await User.findOne({ email })
      if (password && user && await argon2.verify(user.encryptedPassword, password)){
        return user.toJSON()
      }
      return null
    },
  })
  
  app
    .use(router.routes())
    .use(router.allowedMethods())
  
  app.listen(3000)
}

run()