export type TauClientToolPresentationLine = {
    text: string;
    tone?: "added" | "removed";
    wrap?: "word" | "character";
};
export type TauClientToolPresentation = {
    subject?: string;
    subjectWrap?: "word" | "character";
    details?: TauClientToolPresentationLine[];
    metadata?: string[];
};
export type TauClientToolTextTruncationOptions = {
    maxLines?: number;
    maxLineChars?: number;
    strategy?: "head" | "middle";
};
export declare function truncateTauClientToolText(text: string, options?: TauClientToolTextTruncationOptions): string;