voluptasmollitia/docs-exp/auth.userinfo.providerid.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/auth](./auth.md) &gt; [UserInfo](./auth.userinfo.md) &gt; [providerId](./auth.userinfo.providerid.md)

## UserInfo.providerId property

The provider used to authenticate the user.

<b>Signature:</b>

```typescript
readonly providerId: string;
```