export declare const assert: (expected: unknown) => {
    toBe: (resut: unknown) => boolean;
    toBeTruthy: () => boolean;
    toBeFalsy: () => boolean;
    toBeNull: () => boolean;
    toBeUndefined: () => boolean;
    toBeDefined: () => boolean;
    toBeNaN: () => boolean;
    toMatch: (result: unknown) => boolean;
    toContain: (result: unknown) => boolean;
    toBeLessThan: (result: unknown) => boolean;
    toBeGreaterThan: (result: unknown) => boolean;
    toBeLessThanOrEqual: (result: unknown) => boolean;
    toBeGreaterThanOrEqual: (result: unknown) => boolean;
    toBeInstanceOf: (result: unknown) => boolean;
    toHaveBeenCalled: () => boolean;
    toHaveBeenCalledWith: (...args: any[]) => boolean;
    toThrow: () => boolean;
};
