/// <reference types="jest" />
/**
 * An extension to `jest.Mock<T,Y>` that allows waiting for asynchronous calls.
 *
 * @typeParam T return type of the mock implementation
 * @typeParam Y argument types of the mock implementation
 */
export interface DeferredMock<T = any, Y extends any[] = any> extends jest.Mock<T, Y> {
    /**
     * Wait for next call to the mocked function.
     *
     * @param timeout maximum amount of milliseconds to wait for the call before throwing a time-out exception (default is ˙300˙)
     * @returns promise of this mock function for each
     */
    afterNextCall: (timeout?: number) => Promise<DeferredMock<T, Y>>;
    /**
     * Wait for Nth call to the mocked function from the moment this function is called.
     *
     * @param callCount number of calls to wait for
     * @param timeout maximum amount of milliseconds to wait for the Nth call before throwing a time-out exception (default is ˙300˙)
     * @returns promise of this mock function
     */
    afterNthCall: (callCount: number, timeout?: number) => Promise<DeferredMock<T, Y>>;
}
export declare function deferredFn(): DeferredMock;
export declare function deferredFn<T, Y extends any[]>(implementation?: (...args: Y) => T): DeferredMock<T, Y>;
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