Function beforeEach

packages/jest-circus/src/index.ts:112–113

(fn, timeout)

// Hooks have to pass themselves to the HOF in order for us to trim stack traces.
const beforeEach: THook = (fn, timeout) =>
  _addHook(fn, 'beforeEach', beforeEach, timeout);
const beforeAll: THook = (fn, timeout) =>
  _addHook(fn, 'beforeAll', beforeAll, timeout);
const afterEach: THook = (fn, timeout) =>