The chai-jest-mocks from caffeinatedcm

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Fails with `automock: true`

When my Jest config turns on automocking:

  ● Test suite failed to run

    TypeError: Cannot convert undefined or null to object
        at Function.keys (<anonymous>)

       7 |
       8 | chai.use(require('chai-dom'));
    >  9 | chai.use(require('chai-jest-mocks'));
         |          ^
      10 | chai.use(require('chai-jest-snapshot'));
      11 | chai.use(require('chai-jest-diff').default());
      12 |

      at node_modules/color-convert/index.js:68:27
          at Array.forEach (<anonymous>)
      at Object.<anonymous> (node_modules/color-convert/index.js:61:8)
      at Object.<anonymous> (node_modules/chai-jest-mocks/lib/matchers/beenCalled.js:3:5)
      at Object.<anonymous> (node_modules/chai-jest-mocks/lib/matchers/index.js:3:15)
      at Object.<anonymous> (node_modules/chai-jest-mocks/lib/index.js:1:45)
      at Object.require (test/lib/setup-jest-after-env.js:9:10)
          at Array.forEach (<anonymous>)

Latest version of this lib, on latest OSX:

Lees-MacBook-Pro:app lee$ jest -v
24.8.0
Lees-MacBook-Pro:app lee$ node -v
v10.16.0
Lees-MacBook-Pro:app lee$ npm -v
6.9.2
Lees-MacBook-Pro:app lee$

Support for Jest 27

Tests using the library currently fail when using Jest 27.

Example output with chai.expect(mockFn).to.have.beenCalled();

jestMock.isMockFunction is not a function

TypeError: jestMock.isMockFunction is not a function
    at ensureMock (https://738by.csb.app/node_modules/chai-jest-mocks/lib/utils/ensureMock.js:15:17)
    at Proxy.eval (https://738by.csb.app/node_modules/chai-jest-mocks/lib/matchers/beenCalled.js:13:7)
    ...

Sandbox here: https://codesandbox.io/s/nostalgic-hermann-738by?file=/jest.test.js

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