export type LiveLogMessage = {
    timestamp: string;
    /**
     * A UUID for this driver
     */
    driver_id: string;
    /**
     * The human readable name of this driver
     */
    driver_name: string;
    /**
     * The level this message is logged at
     */
    log_level: number;
    /**
     * The content of this message
     */
    message: string;
};
export declare const isLiveLogMessage: (event: unknown) => event is LiveLogMessage;
export type EventFormat = {
    /**
     * A printf-like format string which can contain zero or more format specifiers.
     */
    formatString: string;
    /**
     * Arguments that replace the corresponding specifiers in the formatString.
     */
    formatArgs?: string[];
    /**
     * The time the event was created.
     */
    time: string;
};
/**
 * A format function used to normalize the raw event data so that the CLI can log consistently.
 * Implementations are expected to return printf-like strings and args as well as event time.
 *
 * @param eventData Any instance of {@link MessageEvent.data}
 */
export type EventFormatter = (eventData: LiveLogMessage) => EventFormat;
export declare const parseEvent: (event: MessageEvent) => LiveLogMessage;
/**
 * Log received Server-sent event data to the console.
 *
 * Aside from the event time which is logged first for all messages, format is specified by the
 * caller with a function that returns printf-like strings and args via {@link EventFormat}.
 *
 * @param message a message received by a target object
 * @param formatter a format function that controls how data is displayed
 */
export declare const logEvent: (message: LiveLogMessage, formatter: EventFormatter) => void;
//# sourceMappingURL=sse-io.d.ts.map