How to configurate your library for typescript tests? (ts7016)

[viT-1]

I am using ts-jest & want to mock fetch responses (for browser code).

First of all, after installing fetch-mock-jest, in jest setup file I should write
global.fetchMock = require('fetch-mock-jest');
is it right or it should be global.fetch = require('fetch-mock-jest').sandbox();?

In ts tests I can't write global.fetchMock or fetchMock without global declaring
or default importing import fetchMock from 'fetch-mock-jest';
But if I am doing such things, why I need to make changes in jest setup script?

Moreover, If I import fetchMock in test, eslint show me suggestion:
Could not find a declaration file for module 'fetch-mock-jest'. ... implicitly has an 'any' type
Try `npm install @types/fetch-mock-jest` if it exists or add a new declaration (.d.ts) file containing `declare module 'fetch-mock-jest'; (ts7016)

Can you provide d.ts file for using typed fetchMock methods?

[viT-1]

wheresrhys/fetch-mock#158 (comment)

[viT-1]

somemodule.spec.ts

import fetchMock from 'fetch-mock-jest';

fetchMock.mock({
	url: 'begin:/activity/findpoints', //relative url
	response: Promise.resolve([
		{ label: 'foo' },
		{ label: 'bar' },
		{ label: 'baz' },
	]),
});

and typings/fetch-mock-jest.ts
declare module 'fetch-mock-jest';

I have an error:

Test suite failed to run
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.
...
node_modules\fetch-mock\esm\client.mjs:3552
    export default client;
    ^^^^

    SyntaxError: Unexpected token export

      at ScriptTransformer._transformAndBuildScript (../node_modules/@jest/transform/build/ScriptTransformer.js:537:17)
      at ScriptTransformer.transform (../node_modules/@jest/transform/build/ScriptTransformer.js:579:25)
      at Object.<anonymous> (../node_modules/fetch-mock-jest/fetch-mock-jest.js:4:19)

[wheresrhys]

Please try v1.2.0 of this library and reopen the issue if it's still broken