import type { Event, Run } from "./spec.ts";
export type StepStatus = "same" | "changed" | "added" | "removed";
export interface StepDiff {
    status: StepStatus;
    base?: Event;
    head?: Event;
}
export interface RunDiff {
    status: "same" | "changed";
    steps: StepDiff[];
}
export declare function diffRuns(base: Pick<Run, "events">, head: Pick<Run, "events">): RunDiff;