[Home](./index.md) > [@firebase/auth-types](./auth-types.md) > [ActionCodeURL](./auth-types.actioncodeurl.md) > [operation](./auth-types.actioncodeurl.operation.md) ## ActionCodeURL.operation property The action performed by the email action link. It returns from one of the types from [ActionCodeInfo](./auth-types.actioncodeinfo.md) Signature: ```typescript readonly operation: ActionCodeOperation; ```