Firebase-js-sdk: firebase 6.0,0 Auth: Uncaught TypeError: Cannot read property 'resolve' of undefined

[henrylearn2rock]

[REQUIRED] Describe your environment

• Operating System version: Windows 10
• Browser version: Version 74.0.3729.131 (Official Build) (64-bit)
• Firebase SDK version: 6.0.0
• Firebase Product: auth, rxjs

[REQUIRED] Describe the problem

Exception thrown with authState upon login/logout/re-login:

Uncaught TypeError: Cannot read property 'resolve' of undefined
    at lm.h.tc (auth.esm.js?b7aa:317)
    at lm.d [as onAuthStateChanged] (auth.esm.js?b7aa:340)
    at Login.componentDidMount (Login.js?25f4:53)

both using @firebase/auth @ 0.11.0, fine with @firebase/app 0.3.17 but fail with @firebase/app 0.4.0,

Steps to reproduce:

working on it, cannot reproduce elsewhere...

Relevant Code:

working on it, cannot reproduce elsewhere...

[wti806]

@henrylearn2rock I cannot reproduce this with firebase 6.0.0. Can you try to do a clean npm install to see if it works? You could remove the node_modules and package-lock.json and run npm install again.

[henrylearn2rock]

@wti806 I tried what you suggested, I even cleared the yarn cache, but I am still getting the same error

Here is the error message from Firefox:

TypeError: _firebase_app__WEBPACK_IMPORTED_MODULE_0___default.a.Promise is undefined[Learn More] main.bundle.js line 1073 > eval:320:33
tc auth.esm.js:317
d auth.esm.js:340
componentDidMount Login.js:53

I suspect it's caused by "Breaking change: Removed polyfills in the Firebase package." since it is complaining about Promise, which is firebase.promise in the code, is undefined.

https://github.com/firebase/firebase-js-sdk/blob/master/packages/auth/src/auth.js#L1349

[Feiyang1]

It's actually not that. We removed firebase.Promise from the interface, but Auth is still using it. Instead, Auth should use native Promise directly. We will make a patch release to fix it. Thanks a lot for reporting it.

[Feiyang1]

Please upgrade to 6.0.1 for the fix.