/**
 * WhatsApp Cloud API hard limits we clamp against when lowering IR to
 * messages. Sources: Cloud API "Messages" + "Interactive messages" docs.
 */
export declare const WA_LIMITS: {
    /** Max chars in a text message body. */
    readonly bodyText: 4096;
    /** Max reply buttons in an interactive `button` message. */
    readonly replyButtons: 3;
    /** Max chars in a reply-button title. */
    readonly buttonTitle: 20;
    /** Max chars in an interactive header/body/footer text. */
    readonly interactiveBody: 1024;
    readonly interactiveHeader: 60;
    readonly interactiveFooter: 60;
    /** Max total rows across all sections in an interactive `list` message. */
    readonly listRows: 10;
    /** Max chars in a list-row title. */
    readonly rowTitle: 24;
    /** Max chars in a list-row description. */
    readonly rowDescription: 72;
    /** Max chars in the list's open button label. */
    readonly listButton: 20;
    /** Max chars in an interactive control id (button/row id). */
    readonly controlId: 256;
};
/** Truncate to max chars, appending an ellipsis marker if longer. Never returns >max. */
export declare function truncateText(text: string, max: number): string;
/** Clamp an array to max items; return kept items plus how many overflowed. */
export declare function clampArray<T>(items: readonly T[], max: number): {
    items: T[];
    overflow: number;
};
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