Typings not working properly

[Hector Manuel]

Bug

• package version:

"@types/jest": "^24.9.0",
"jest": "^24.9.0",
"jest-chain": "^1.1.2",
"jest-extended": "^0.11.2",

• node version: 12.14.1
• npm version: 6.13.6

Relevant code or config

//example.spec.ts
expect(response).not.toMatchObject({test: 'testing_purpose'})

//global.d.ts
import 'jest-extended';
import 'jest-chain';

//app.d.ts
declare global {
    namespace jest {
        interface Matchers<R> {
            toDeepKeysEqual(expected: AnyObject);
        }
    }
}

Scenario:

• After upgrading to the latest @types/jest version (see version on top) some matchers start giving the following error
  Property 'not' does not exist on type 'ChainedMatchers<any>'.

• Custom expect extensions are not working as well:
  TS2339: Property 'toDeepKeysEqual' does not exist on type 'ChainedMatchers<any>'.

• I'm using Webstorm and typescript setup properly... everything was working perfectly until I update the package previously mentioned.

• If I remove the import of jest-chain everything goes back to work

Any idea what might cause the problem or how to solve it.
Thanks in advance

[Anton Németh]

I changed this file https://github.com/mattphillips/jest-chain/blob/master/types/index.d.ts
I am not 100% sure it is correct change but everything works now.

You can update index.d.ts file in node_modules\jest-chain\types\index.d.ts

declare namespace jest {
  type ChainedMatchers<R> = { [K in keyof AndNot<jest.Matchers<R>>]: AndNot<jest.Matchers<ChainedMatchers<R>>>[K] };

  interface Expect {
    /**
     * The `expect` function is used every time you want to test a value.
     * You will rarely call `expect` by itself.
     *
     * @param actual The value to apply matchers against.
     */
    <T = any>(actual: T): ChainedMatchers<T>;
  }
}

Added AndNot<> wrapper here

[Userbit]

@refucktor and @tonoslav, please, try to apply this PR #15
Probably it will resolve your problem.

[Hector Manuel]

@refucktor and @tonoslav, please, try to apply this PR #15
Probably it will resolve your problem.

Thanks @Userbit , I will try it soon and give you feedback

[Matt Phillips]

This should be fixed by: DefinitelyTyped/DefinitelyTyped#41766

Please try using the latest @types/jest.

Going to close this for now, but feel free to re-open and let me know if this is still an issue.

[Anton Németh]

For me I still getting error
@types/jest@24.9.1 or @types/jest@24.5.1
"jest": "^25.1.0",
"jest-chain": "^1.1.4",
"jest-expect-message": "^1.0.2",
"jest-extended": "^0.11.5",
"typescript": "^3.7.5"