/**
 * A function that retrieves an instance of a logger.
 */
export type LoggerFactory = (context: Function | string, meta?: Record<string, unknown>) => SimpleLogger;
/**
 * A simple logger that logs messages.
 */
export interface SimpleLogger {
    /** Logs with trace level. */
    trace: LogFunction;
    /** Logs with debug level. */
    debug: LogFunction;
    /** Logs with info level. */
    info: LogFunction;
    /** Logs with warn level. */
    warn: LogFunction;
    /** Logs with error level. */
    error: LogFunction;
    /** Logs with fatal level. */
    fatal: LogFunction;
}
/**
 * A function that writes logs.
 */
interface LogFunction {
    /**
     * Logs a message template where %d, %s and %o are replaced by the given args in their order.
     */
    (msg: string, ...args: any[]): void;
    /**
     * Logs an object with it's properties and a message template where %d, %s and %o are replaced by the given args in
     * their order.
     */
    (obj: Record<string, unknown>, msg?: string, ...args: any[]): void;
}
export declare class EmtpyLogger implements SimpleLogger {
    trace(_obj: Record<string, unknown> | string, _msg?: string, ..._args: any[]): void;
    debug(_obj: Record<string, unknown> | string, _msg?: string, ..._args: any[]): void;
    info(_obj: Record<string, unknown> | string, _msg?: string, ..._args: any[]): void;
    warn(_obj: Record<string, unknown> | string, _msg?: string, ..._args: any[]): void;
    error(_obj: Record<string, unknown> | string, _msg?: string, ..._args: any[]): void;
    fatal(_obj: Record<string, unknown> | string, _msg?: string, ..._args: any[]): void;
}
export {};