export declare const MESSAGE_QUOTE_LIMIT = 2000;
export interface ArkmeMessageQuote {
    version: 1;
    projection: 'arkme-text-v1';
    sourceDigest: string;
    recordVersion?: number;
    /** UTF-16 offsets in quoteCanonicalText(), never offsets into Markdown. */
    start: number;
    end: number;
    text: string;
    prefix: string;
    suffix: string;
}
export interface ArkmeQuoteReplyCapabilities {
    supported: boolean;
    maxQuoteLength: number;
}
export type ArkmeQuoteSource = {
    title?: string;
    textContent: string;
    textFormat?: 'plain' | 'markdown';
    senderKind?: string;
};
/** Versioned matching projection. Displayed quotation keeps its original whitespace. */
export declare function normalizeQuoteText(text: string): string;
export declare function quoteSourceContent(item: ArkmeQuoteSource): string;
export declare function quoteCanonicalText(item: ArkmeQuoteSource): string;
export declare function readMessageQuote(value: unknown): ArkmeMessageQuote | undefined;
/** New captures never serialize half a surrogate pair at the context boundary. */
export declare function quoteContext(text: string, start: number, end: number): {
    prefix: string;
    suffix: string;
};
export declare function quoteMatchesCanonical(quote: ArkmeMessageQuote, text: string): boolean;
export declare function quoteCapabilitiesFromWire(value: unknown): ArkmeQuoteReplyCapabilities;
/** Only a server-validated, explicitly accessible quote may expose its snapshot. */
export declare function projectedMessageQuote(value: unknown, state: unknown): {
    quote?: ArkmeMessageQuote;
    quoteState?: 'available' | 'edited' | 'unavailable';
};
//# sourceMappingURL=message-quote.d.ts.map