import type { AdapterUsageCheckpoint } from "./types.js";
/** The consumer incrementally parses only new records (never the full history).
 * A fresh instance belongs to one CLI attempt. Call flush() after its process
 * exits, before retrying or final result handling. Checkpoint failures are
 * retained outside runChildProcess's best-effort onLog error handler. */
export declare function createUsageCheckpointLog(onLog: (stream: "stdout" | "stderr", chunk: string) => Promise<void>, onUsage: ((receipt: AdapterUsageCheckpoint) => Promise<void>) | undefined, consume: (records: string) => AdapterUsageCheckpoint | null): ((stream: "stdout" | "stderr", chunk: string) => Promise<void>) & {
    flush(options?: {
        complete?: boolean;
    }): Promise<void>;
};
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