declare function inherits(ctor: any, superCtor: any): void;
declare function describe(name: string, fn: () => void): void;
declare function it(name: string, fn: () => void | Promise<void>): void;
declare function beforeEach(fn: () => void | Promise<void>): void;
declare function afterEach(fn: () => void | Promise<void>): void;
declare function beforeAll(fn: () => void | Promise<void>): void;
declare function afterAll(fn: () => void | Promise<void>): void;
declare function mockFn(implementation?: (...args: any[]) => any): {
    (...args: any[]): any;
    mock: {
        calls: any[][];
        results: any[];
        lastCall: () => any[] | undefined;
    };
    mockImplementation(impl: (...args: any[]) => any): any;
    mockReturnValue(value: any): any;
    mockResolvedValue(value: any): any;
    mockRejectedValue(value: any): any;
    mockClear(): void;
    mockReset(): void;
    mockRestore(): void;
};
declare const expect: {
    (value: any): any;
    extend(matchers: Record<string, any>): void;
};
export { it, expect, mockFn, describe, afterAll, inherits, afterEach, beforeAll, beforeEach };