export type LogLevel = "info" | "warn" | "critical";
export interface LogEvent {
    level: LogLevel;
    event: string;
    timestamp: string;
    [field: string]: unknown;
}
export interface Logger {
    emit(event: Omit<LogEvent, "timestamp">): void;
}
export declare function setLoggerForTests(logger: Logger | null): void;
export declare function emit(event: Omit<LogEvent, "timestamp">): void;