export declare const TELEGRAM_LIMITS: {
    readonly messageText: 4096;
    readonly caption: 1024;
    readonly callbackData: 64;
    readonly buttonsPerRow: 8;
    readonly buttonsPerMessage: 100;
    readonly buttonText: 64;
    readonly photosPerMessage: 10;
};
export declare const byteLen: (s: string) => number;
/** Truncate to max chars, appending an ellipsis marker if the input was longer. Never returns >max. */
export declare function truncateText(text: string, max: number): string;
/** Clamp an array to max items; return the kept items plus how many overflowed (for an overflow signal). */
export declare function clampArray<T>(items: readonly T[], max: number): {
    items: T[];
    overflow: number;
};
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