import { Logger as PinoLogger } from 'pino';
/**
 * Log levels supported by Bellwether.
 */
export type LogLevel = 'debug' | 'info' | 'warn' | 'error' | 'silent';
/**
 * Logger configuration options.
 */
export interface LoggerConfig {
    /** Log level (default: 'info') */
    level?: LogLevel;
    /** Output file path (default: stderr) */
    file?: string;
    /** Enable pretty printing for development */
    pretty?: boolean;
    /** Include timestamps in output */
    timestamp?: boolean;
    /** Component name for context */
    name?: string;
}
/**
 * Create a new logger instance.
 */
export declare function createLogger(config?: LoggerConfig): PinoLogger;
/**
 * Get or create the global logger instance.
 */
export declare function getLogger(name?: string): PinoLogger;
/**
 * Configure the global logger.
 */
export declare function configureLogger(config: LoggerConfig): void;
/**
 * Reset the global logger (for testing).
 */
export declare function resetLogger(): void;
/**
 * Temporarily suppress all logging (set level to 'silent').
 * Call restoreLogLevel() to restore the previous level.
 */
export declare function suppressLogs(): void;
/**
 * Restore the log level after suppression.
 */
export declare function restoreLogLevel(): void;
/**
 * Create a child logger with additional context.
 */
export declare function childLogger(parent: PinoLogger, context: Record<string, unknown>): PinoLogger;
/**
 * Timing helper for performance measurement.
 */
export interface TimingResult {
    durationMs: number;
    log: () => void;
}
/**
 * Start a timing measurement.
 */
export declare function startTiming(logger: PinoLogger, operation: string): () => TimingResult;
/**
 * Log levels as numeric values for comparison.
 */
export declare const LOG_LEVEL_VALUES: Record<LogLevel, number>;
/**
 * Check if a log level is enabled.
 */
export declare function isLevelEnabled(currentLevel: LogLevel, checkLevel: LogLevel): boolean;
export type { PinoLogger as Logger };
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