The base class for asserting ownership of a second factor.
This is used to facilitate enrollment of a second factor on an existing user or sign-in of a user who already verified the first factor.
Signature:
export interface MultiFactorAssertion 
Properties
| Property | Type | Description | 
|---|---|---|
| factorId | (typeof FactorIdMap)[keyof typeof FactorIdMap] | The identifier of the second factor. | 
MultiFactorAssertion.factorId
The identifier of the second factor.
Signature:
readonly factorId: (typeof FactorIdMap)[keyof typeof FactorIdMap];