import { type Message } from '../core/session/session-jsonl.js';
import { type ContextPruningSettings, type PruneResult } from './pruning.js';
import type { RemoteCompactProvider } from './remote-compaction.js';
export declare const BASE_CHUNK_RATIO = 0.4;
export declare const MIN_CHUNK_RATIO = 0.15;
export declare const SAFETY_MARGIN = 1.2;
export interface CompactionSettings {
    enabled: boolean;
    reserveTokens: number;
    keepRecentTokens: number;
    restoreFileContents: boolean;
}
export declare const DEFAULT_COMPACTION_SETTINGS: CompactionSettings;
export declare const POST_COMPACT_MAX_FILES_TO_RESTORE = 5;
export declare const POST_COMPACT_TOKEN_BUDGET = 50000;
export declare const POST_COMPACT_MAX_TOKENS_PER_FILE = 5000;
export declare const DEFAULT_SUMMARY_MAX_TOKENS = 900;
export type SummarizeFn = (params: {
    system: string;
    userPrompt: string;
    maxTokens: number;
    abortSignal?: AbortSignal;
}) => Promise<string>;
export interface CompactionStrategy {
    readonly name: string;
    summarize(params: StrategyParams): Promise<string>;
    readonly fallback?: CompactionStrategy;
}
export interface StrategyParams {
    summarize?: any;
    remoteCompactProvider?: RemoteCompactProvider;
    droppedMessages: Message[];
    contextWindowTokens: number;
    maxTokens?: number;
    reserveTokens: number;
    customInstructions?: string;
    systemPrompt?: string;
    abortSignal?: AbortSignal;
}
export declare function computeAdaptiveChunkRatio(messages: Message[], contextWindow: number): number;
export declare function splitMessagesByTokenShare(messages: Message[], parts?: number): Message[][];
export declare function chunkMessagesByMaxTokens(messages: Message[], maxTokens: number): Message[][];
export declare function summarizeInStages(params: {
    messages: Message[];
    summarize: SummarizeFn;
    maxTokens: number;
    maxChunkTokens: number;
    contextWindow: number;
    customInstructions?: string;
    previousSummary?: string;
    parts?: number;
    minMessagesForSplit?: number;
    abortSignal?: AbortSignal;
}): Promise<string>;
export declare function shouldTriggerCompaction(params: {
    messages: Message[];
    contextWindowTokens: number;
    settings?: Partial<CompactionSettings>;
    systemPrompt?: string;
    charsPerTokenUnit?: number;
    includeThinking?: boolean;
}): boolean;
export declare function shouldProactiveCompact(params: {
    messages: Message[];
    contextWindowTokens: number;
    settings?: Partial<CompactionSettings>;
    includeThinking?: boolean;
}): boolean;
export declare function buildCompactionSummary(params: {
    summarize: SummarizeFn;
    messages: Message[];
    contextWindowTokens: number;
    maxTokens?: number;
    reserveTokens?: number;
    customInstructions?: string;
    abortSignal?: AbortSignal;
}): Promise<string>;
export declare function compactHistoryIfNeeded(params: {
    summarize: SummarizeFn;
    messages: Message[];
    contextWindowTokens: number;
    pruningSettings?: Partial<ContextPruningSettings>;
    compactionSettings?: Partial<CompactionSettings>;
    systemPrompt?: string;
    charsPerTokenUnit?: number;
    maxTokens?: number;
    skipLlmCompaction?: boolean;
    forceCompaction?: boolean;
    remoteCompactProvider?: RemoteCompactProvider;
    customInstructions?: string;
    includeThinking?: boolean;
    abortSignal?: AbortSignal;
    workspaceDir?: string;
}): Promise<{
    summary?: string;
    summaryMessage?: Message;
    pruneResult: PruneResult;
    degraded?: boolean;
}>;
export declare const DEFAULT_CONTEXT_WINDOW_TOKENS = 1000000;
export declare const DEFAULT_HISTORY_SHARE = 0.5;
export declare const DEFAULT_CONTEXT_WINDOW_CHARS: number;
//# sourceMappingURL=compaction.d.ts.map