reactjs - Typescript Reactjs Jest/ enzyme 错误 - 'Type ' 任何 []' is missing the following properties...'

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();
});

但是对于这一行，我正在尝试模拟状态 -

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，并且无法在网上找到很多与针对此特定用例修复此类错误相关的信息。

Answer 1

从我的角度来看，这有点像黑客，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);
...

或者

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