/**
 * Returns a formatted ISO timestamp in gray brackets: [2025-10-26T14:30:00.000Z]
 */
export declare function getTimestamp(): string;
/**
 * Overrides global console.log and console.error to prepend timestamps.
 */
export declare function enableGlobalTimestamps(): void;
/**
 * Logs a message with a timestamp (legacy, now handled by global console).
 */
export declare function logWithTimestamp(message: string, color?: (msg: string) => string): void;
/**
 * Logs an error message with a timestamp (legacy, now handled by global console).
 */
export declare function errorWithTimestamp(message: string, color?: (msg: string) => string): void;
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