@testing-library/jest-dom/types/jest-globals.d.ts

Custom jest matchers to test the state of the DOM

import {type expect} from '@jest/globals'
import {type TestingLibraryMatchers} from './matchers'

export {}
declare module '@jest/expect' {
  export interface Matchers<R extends void | Promise<void>>
    extends TestingLibraryMatchers<
      ReturnType<typeof expect.stringContaining>,
      R
    > {}
}