express-jwt和express-graphql: error TS2339:类型'Request‘上不存在属性'user’

Question

我尝试让express-jwt和graphql在typescript中协同工作。

import * as express from 'express'
import * as expressGraphql from 'express-graphql'
import * as expressJwt from 'express-jwt'

import schema from './api/schemas'
import rootValue from './api/resolvers'

const app = express()

app.use(
  expressJwt({
    credentialsRequired: false,
    secret: process.env.JWT_SECRET
  })
)

app.use(
  '/',
  expressGraphql((req, res, graphQLParams) => ({
    schema,
    rootValue,
    context: {
      user: req.user
    }
  }))
)

我导入了相关类型@types/express、@types/express-graphql和@types/express-jwt。

存在打字错误：

error TS2339: Property 'user' does not exist on type 'Request'

express-jwt在request对象上添加了user。

我怎么才能修复它呢？

Answer 1

使用一个属性扩展Express Request

interface AuthRequest extends express.Request {
  user?: string
}

app.use(
  '/',
  expressGraphql((req: AuthRequest, res, graphQLParams) => ({
    schema,
    rootValue,
    context: {
      user: req.user
    }
  }))
)