export interface CrossTabTestHarness {
    install(): void;
    restore(): void;
    emitBroadcast(channelName: string, message: unknown): void;
    emitStorage(channelName: string, message: unknown): void;
    getPostedMessages(channelName: string): readonly unknown[];
}
export declare function createCrossTabTestHarness(): CrossTabTestHarness;
//# sourceMappingURL=crossTabTestHarness.d.ts.map