[Home](./index.md) > [@firebase/auth](./auth.md) > [ActionCodeInfo](./auth.actioncodeinfo.md) ## ActionCodeInfo interface A response from [checkActionCode()](./auth.checkactioncode.md). Signature: ```typescript export interface ActionCodeInfo ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [data](./auth.actioncodeinfo.data.md) | { email?: string \| null; multiFactorInfo?: [MultiFactorInfo](./auth.multifactorinfo.md) \| null; previousEmail?: string \| null; } | The data associated with the action code. | | [operation](./auth.actioncodeinfo.operation.md) | [ActionCodeOperation](./auth.actioncodeoperation.md) | The type of operation that generated the action code. |