node_modules/@nestjs/common/file-stream/interfaces/streamable-handler-response.interface.d.ts

export interface StreamableHandlerResponse {
    /** `true` if the connection is destroyed, `false` otherwise. */
    destroyed: boolean;
    /** `true` if headers were sent, `false` otherwise. */
    headersSent: boolean;
    /** The status code that will be sent to the client when the headers get flushed. */
    statusCode: number;
    /** Sends the HTTP response. */
    send: (body: string) => void;
    /** Signals to the server that all of the response headers and body have been sent. */
    end: () => void;
}