[Home](./index.md) > [@firebase/functions-types](./functions-types.md) > [FunctionsError](./functions-types.functionserror.md) ## FunctionsError interface Signature: ```typescript export interface FunctionsError extends FirebaseError ``` Extends: FirebaseError ## Properties | Property | Type | Description | | --- | --- | --- | | [code](./functions-types.functionserror.code.md) | [FunctionsErrorCode](./functions-types.functionserrorcode.md) | A standard error code that will be returned to the client. This also determines the HTTP status code of the response, as defined in code.proto. | | [details](./functions-types.functionserror.details.md) | any | Extra data to be converted to JSON and included in the error response. |