import { Verbosity, LoggerConfig, ILogHandler } from './types/index.js';
/**
 * Minimal Logger class with core functionality only
 *
 * @example
 * ```typescript
 * import { CoreLogger } from '@mks2508/better-logger/core';
 *
 * const logger = new CoreLogger();
 * logger.info('Hello world');
 * logger.error('Something went wrong', error);
 * ```
 */
export declare class CoreLogger {
    private config;
    private scopedPrefix?;
    private handlers;
    private timers;
    private groupDepth;
    /**
     * Creates a new CoreLogger instance
     * @param config - Optional configuration
     */
    constructor(config?: Partial<LoggerConfig>);
    /**
     * Get current configuration
     */
    getConfig(): LoggerConfig;
    /**
     * Sets the global prefix for all log messages
     */
    setGlobalPrefix(prefix: string): void;
    /**
     * Sets the verbosity level for filtering log output
     */
    setVerbosity(level: Verbosity): void;
    /**
     * Creates a scoped logger with a specific prefix
     */
    scope(prefix: string): CoreLogger;
    /**
     * Adds a custom log handler for extensibility
     */
    addHandler(handler: ILogHandler): void;
    /**
     * Checks if a log level should be output based on current verbosity
     */
    private shouldLog;
    /**
     * Gets the effective prefix (global + scoped)
     */
    private getEffectivePrefix;
    /**
     * Core logging method with universal formatting
     */
    private log;
    /**
     * Logs debug information (lowest priority)
     */
    debug(...args: any[]): void;
    /**
     * Logs informational messages
     */
    info(...args: any[]): void;
    /**
     * Logs warning messages
     */
    warn(...args: any[]): void;
    /**
     * Logs error messages
     */
    error(...args: any[]): void;
    /**
     * Logs critical errors (highest priority)
     */
    critical(...args: any[]): void;
    /**
     * Logs trace information (detailed debugging)
     */
    trace(...args: any[]): void;
    /**
     * Displays data in a table format
     */
    table(data: any, columns?: string[]): void;
    /**
     * Starts a collapsible group in the console
     */
    group(label: string, collapsed?: boolean): void;
    /**
     * Ends the current console group
     */
    groupEnd(): void;
    /**
     * Starts a timer with the given label
     */
    time(label: string): void;
    /**
     * Ends a timer and logs the elapsed time
     */
    timeEnd(label: string): void;
    /**
     * Gets performance.now() or fallback for older environments
     */
    private getPerformanceNow;
}
declare const coreLogger: CoreLogger;
/**
 * Export individual methods for convenience (with proper binding)
 */
export declare const debug: (...args: any[]) => void;
export declare const info: (...args: any[]) => void;
export declare const warn: (...args: any[]) => void;
export declare const error: (...args: any[]) => void;
export declare const critical: (...args: any[]) => void;
export declare const trace: (...args: any[]) => void;
export declare const table: (data: any, columns?: string[]) => void;
export declare const group: (label: string, collapsed?: boolean) => void;
export declare const groupEnd: () => void;
export declare const time: (label: string) => void;
export declare const timeEnd: (label: string) => void;
export declare const setGlobalPrefix: (prefix: string) => void;
export declare const scope: (prefix: string) => CoreLogger;
export declare const setVerbosity: (level: Verbosity) => void;
export declare const addHandler: (handler: ILogHandler) => void;
export default coreLogger;
export type { LogLevel, Verbosity, LoggerConfig, ILogHandler, LogMetadata } from './types/index.js';
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