/**
 * Logger utility for mcpGraph
 *
 * All logging goes to stderr to avoid interfering with MCP server
 * communication which uses stdout.
 */
export interface LogEntry {
    level: string;
    message: string;
    timestamp: string;
    args?: unknown[];
}
interface Logger {
    debug(message: string, ...args: unknown[]): void;
    info(message: string, ...args: unknown[]): void;
    warn(message: string, ...args: unknown[]): void;
    error(message: string, ...args: unknown[]): void;
    startCollection(): void;
    stopCollection(): LogEntry[];
}
declare class ConsoleLogger implements Logger {
    private collector;
    private formatMessage;
    private log;
    debug(message: string, ...args: unknown[]): void;
    info(message: string, ...args: unknown[]): void;
    warn(message: string, ...args: unknown[]): void;
    error(message: string, ...args: unknown[]): void;
    startCollection(): void;
    stopCollection(): LogEntry[];
}
export declare const logger: ConsoleLogger;
export {};
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