quodolores/docs-exp/auth.idtokenresult.signinprovider.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/auth](./auth.md) &gt; [IdTokenResult](./auth.idtokenresult.md) &gt; [signInProvider](./auth.idtokenresult.signinprovider.md)

## IdTokenResult.signInProvider property

The sign-in provider through which the ID token was obtained (anonymous, custom, phone, password, etc).

<b>Signature:</b>

```typescript
signInProvider: string | null;
```

## Remarks

Note, this does not map to provider IDs.