title: Jasmine/Jest type conflicts
body: <p>I am relatively new here and would need some help.
  Company I work for uses karma and jasmine for unit testing.
  Now they would like to migrate some tests to jest.
  I got a ticket assigned to me. We are using typescript btw...
  I got jest installed, prefixed with .spec.jest.ts to separate jest test from karmas. And it works fine. Jest just picks up those files that are prefixed. But when i try to do some build things we do with our project I get the type declaration conflicts between jest and jasmine.
  For example: node_modules/@types/jest/index.d.ts:32:1 - error TS6200: Definitions of the following identifiers conflict with those in another file: beforeAll, beforeEach, afterAll, afterEach, describe, fdescribe, xdescribe, it, fit, xit, expect, clock, DEFAULT_TIMEOUT_INTERVAL, CustomMatcherFact
  ory, CustomEqualityTester</p>
  
  <p>I am aware that jest is build on top of jasmine but is there some kind of workaround, we want to migrate our tests gradually. One at a time.
  Is there some kind of workaround to namespace the types for jest or something like that so no conflicts occur?</p>
  
  <p>Tnx in advance for your help :)</p>
  
  <p>I tried to google some workaround but nothing that would solve the issue came across.</p>