export type CampaignRunIsolation = {
    readonly kind: "cleanup";
} | {
    readonly kind: "external";
    readonly reset: (phase: "before-run" | "after-run") => Promise<void>;
} | {
    readonly create: () => Promise<string>;
    readonly kind: "snapshot";
    readonly restore: (snapshot: string) => Promise<void>;
};
export declare function runWithCampaignIsolationAsync(init: {
    readonly isolation: CampaignRunIsolation;
    readonly runAsync: () => Promise<void>;
}): Promise<void>;