import type { AgentTraceFileSystem } from "../../agent-traces/dist/index.js";
import type { ContextBreakdown } from "./types.js";
export interface TraceFileIdentity {
    mtimeMs: number;
    size: number;
}
export declare function defaultTraceTokenCacheDir(): string;
export declare function traceFileIdentity(fs: AgentTraceFileSystem, filePath: string): Promise<TraceFileIdentity | undefined>;
export declare function readCachedBreakdown(fs: AgentTraceFileSystem, cacheDir: string, filePath: string, identity: TraceFileIdentity): Promise<ContextBreakdown | undefined>;
export declare function writeCachedBreakdown(fs: AgentTraceFileSystem, cacheDir: string, filePath: string, identity: TraceFileIdentity, breakdown: ContextBreakdown): Promise<void>;