TypeScript x Express で雑に Passport で Twitter 認証するときに使い回すやつ

index.ts

import express, { Request, Response } from 'express'
import session from 'express-session'
import passport from 'passport'
import cookieParser from 'cookie-parser'
import { inspect } from 'util'
import { Strategy } from 'passport-twitter'
const app = express()

app.use(cookieParser())
app.use(
  session({
    secret: '__credential',
    resave: true,
    saveUninitialized: true
  })
)

app.use(passport.initialize())
app.use(passport.session())

passport.use(
  new Strategy(
    {
      consumerKey: `${process.env.TWITTER_CK}`,
      consumerSecret: `${process.env.TWITTER_CS}`,
      callbackURL: 'http://127.0.0.1:3000/auth/twitter/callback'
    },
    (token: any, tokenSecret: any, profile: any, done: any) => {
      ;(passport.session as any).id = profile.id

      profile.twitter_token = token
      profile.twitter_token_secret = tokenSecret

      process.nextTick(() => done(null, profile))
    }
  )
)

passport.serializeUser((user: any, done: any) => {
  done(null, user)
})

passport.deserializeUser((user: any, done: any) => {
  done(null, user)
})

app.get('/', async (req: Request, res: Response) => {
  if (req.user) {
    res.send(`<pre>${inspect(req.user)}</pre>`)
  } else {
    res.redirect('/auth/twitter')
  }
})

app.get('/auth/twitter', passport.authenticate('twitter'))
app.get(
  '/auth/twitter/callback',
  passport.authenticate('twitter', { failureRedirect: '/?auth_failed' }),
  (req: any, res: any) => {
    res.redirect('/')
  }
)

app.listen(3000, '0.0.0.0', () => {
  console.log('http://127.0.0.1:3000')
})