/** Turns a runner's cumulative-per-session counters (the Claude SDK's
 *  `total_cost_usd` and `modelUsage`) into per-result deltas.
 *
 *  The running total lives in the CLI PROCESS, and a resumed session runs in a
 *  new one. Claude Code restores the previous total into it only when the
 *  resumed session was the last to exit in that project directory, so in an
 *  org (several roles, one cwd) a resume usually starts again from zero.
 *  Deltas keyed by session id alone turned the first result after such a
 *  resume into max(0, small - previous) = 0 (2.16.0 release run: 14.6M tokens
 *  billed at ~$0, USD caps tripping late).
 *
 *  So values are compared within a process, and the first result of a new
 *  process is compared with what the previous process last reported for the
 *  same session: every field at least that high means the total was carried
 *  over (count the increase); anything lower means it restarted (count it all).
 *  Within one process a dip is a provider-side correction and floors at 0. */
export declare class CumulativeMeter<T extends {
    [K in keyof T]: number;
}> {
    private carried;
    private live;
    /** Call when a new runner process starts reporting. */
    newProcess(): void;
    delta(sid: string, now: T): T;
}
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