Struggling with ts-jest

[dhakan]

Hi! This seems to be a fantastic project.

Currently I'm trying to test chrome.storage.local.get and chrome.storage.local.set, but I'm struggling to have my typscript environment, more specifically ts-jest understand that mockClear actually exists as per:

beforeEach(() => {
  chrome.storage.local.get.mockClear(); // Property 'mockClear' does not exist on type ... ...
});

I've managed to setup a similar project called jest-fetch-mock, and if I dig into their source, I can see that they have types such as:

export interface FetchMock
    extends jest.MockInstance<Promise<Response>, [string | Request | undefined, RequestInit | undefined]> {
    (input?: string | Request, init?: RequestInit): Promise<Response>;

    // Response mocking
    mockResponse(fn: MockResponseInitFunction): FetchMock;
    mockResponse(response: string, responseInit?: MockParams): FetchMock;

    ...
}

defined in their project. And I can't seem to find something similar in this project.

Could it be that my project doesn't understand that the implementations has actually created functions such as mockClear? Perhaps this project doesn't support typescript testing? If so, maybe I could declare something for the functions I'm using. I just want to make sure I'm not misunderstanding something that you've documented somewhere.

Thanks in advance!

[dhakan]

FYI I moved on by doing the following manipulations of the API:

beforeEach(() => {
  chrome.storage.local.clear();
  chrome.runtime.lastError = undefined;
});

[clarkbw]

Perhaps this project doesn't support typescript testing? If so, maybe I could declare something for the functions I'm using. I just want to make sure I'm not misunderstanding something that you've documented somewhere.

Yes, right now we don't have types supported. But I'd be happy to take a PR for those.