import { Message } from '../types/api';
export interface CompactionOptions {
    model?: string;
    targetTokens: number;
    keepRecentMessages: number;
    summaryMaxChars: number;
}
export declare function compactConversationForBudget(messages: Message[], system: string | undefined, options: CompactionOptions): {
    compacted: boolean;
    compactedMessages: number;
    messages: Message[];
    system?: string;
    tokensUsed: number;
};
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