我想这可能有用

function checkAuth(req, res, next) {
    if (req.header('auth-token')) {
      admin.auth().verifyIdToken(req.header('auth-token'))
        .then((decodedToken) => {
            //return uid
            let uid = decodedToken.uid
            req.decoded = {
              uid:uid
            };
          next()
        }).catch((err) => {
            console.log(err);
          res.status(403).send('Unauthorized')
        });
    } else {
       
      res.status(403).send('Unauthorized')
    }
  }


module.exports.checkAuth = checkAuth;

您可以将uid变量设置为req.uid，并在routes.js文件中使用它，如下所示：

• • 验证Firebase. js**

...
        .then((decodedToken) => {
            //return uid
            req.uid = decodedToken.uid
          next()
        }).catch((err) => {
            console.log(err);
...

• • 路线. js**

const verify_firebase = require('./verifyFirebase').checkAuth;

router.get('/', verify_firebase, (req,res) => {
    console.log('my uid:', req.uid);
    res.json("verified");
})

请记住，如果您要使用typescript，您还需要为它定义正确的类型。