interface ListenerLog {
    debug(...args: unknown[]): void;
    warn(...args: unknown[]): void;
}
/**
 * Log the error of a command that an event listener or a background task sent: it has
 * no caller to give the error to. At the end of a session (a session end error, or any
 * error after the WebDriver BiDi connection of `browser` closed) it is a debug message,
 * any other error is a warning.
 */
export declare function logBackgroundError(log: ListenerLog, message: string, err: unknown, browser?: unknown): void;
export {};
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