Missing details in the `AuthBlockingEvent` when using with the Authentication Emulator

[vajahath]

[REQUIRED] Environment info

firebase-tools: 13.29.1

Platform: MacOS

[REQUIRED] Test case

This seem to be the Auth emulator bug.

export const onUserSignIn = beforeUserSignedIn(async (event) => {
  const providerData = event.data?.providerData;
  const providerId = event.additionalUserInfo?.providerId;
  const isNewUser = event.additionalUserInfo?.isNewUser;
  const metadata = event.data?.metadata;
  
 console.log(JSON.stringify({providerData, providerId, isNewUser, metadata}));
});

Output:

{
  "providerData": [],
  "providerId": "google.com",
  "isNewUser": false,
  "metadata": {
    "creationTime": "Invalid Date",
    "lastSignInTime": "Invalid Date"
  }
}

[REQUIRED] Steps to reproduce

• I anonymously signed in the user
• Then I converted the user to google signed in user.

export const onUserSignIn = beforeUserSignedIn(async (event) => {
  const providerData = event.data?.providerData;
  const providerId = event.additionalUserInfo?.providerId;
  const isNewUser = event.additionalUserInfo?.isNewUser;
  const metadata = event.data?.metadata;
  
 console.log(JSON.stringify({providerData, providerId, isNewUser, metadata}));
});

[REQUIRED] Expected behavior

1. providerData shouldn't be empty (see providerId, so that information seem missing in providerData)
2. creationTime and lastSignInTime are invalid - it should be actual Date.

[REQUIRED] Actual behavior

{
  "providerData": [],
  "providerId": "google.com",
  "isNewUser": false,
  "metadata": {
    "creationTime": "Invalid Date",
    "lastSignInTime": "Invalid Date"
  }
}

[colerogers]

Hey @vajahath thanks for opening this issue!

I did some digging and it looks like the provider data isn't being sent from Auth emulator and both the creationTime and lastSignInTime being sent are string representations of milliseconds since Epoch. In the Functions SDK we convert these times using new Date() here. Since those are treated as strings and not numbers, the output is Invalid Date. The Auth emulator needs to be patched to correctly send them as numbers so the SDK can parse them. I'll re-assign this issue so they can take a look.