Typescript Reactjs Jest/Enzyme 错误 - '类型'任何 []' 缺少以下属性...'

Question

let wrapper;
const setState = jest.fn();
const useStateSpy = jest.spyOn(React, "useState")
useStateSpy.mockImplementation((init) => [init, setState]);

beforeEach(() => {
    wrapper = Enzyme.mount(Enzyme.shallow(<AddOption/>).get(0))
});

afterEach(() => {
    jest.clearAllMocks();
});

我正在尝试模拟这一行的状态 -

useStateSpy.mockImplementation((init) => [init, setState]);

我收到错误：

Type 'any[]' is missing the following properties from type '[unknown, Dispatch<unknown>]': 0, 1ts(2739)

我不确定如何修复此错误，也无法在网上找到很多关于针对此特定用例修复此类错误的信息。

Answer 1

从我的角度来看，这是一种 hack，但你可以试试这个

...
const init = {}; // or anything you want to be the initial state
useStateSpy.mockImplementation(() => [init, setState] as any);
...

或

...
const init = {}; // or anything you want to be the initial state
useStateSpy.mockReturnValue([init, setState] as any);
...