import { Observable } from "rxjs";
import { RunHelpers, TestScheduler } from "rxjs/testing";
export type MappedHelpers = Omit<RunHelpers, "expectObservable"> & {
    expect: <T>(observable: Observable<T>, subscriptionMarbles?: string | null) => {
        toBe: (marbles: string, values?: unknown, errorValue?: unknown) => void;
        toBeObservable: (other: Observable<T>) => void;
    };
    scheduler: TestScheduler;
};
export declare const marbles: <T>(callback: (helpers: MappedHelpers) => T) => (() => T);
//# sourceMappingURL=marbles.d.ts.map