message: Make matchers snapshot test consistent across node versions.
diff: @@ -89,7 +89,9 @@ describe('.toEqual()', () => {
  [undefined, jestExpect.anything()],
  [undefined, jestExpect.any(Function)],
  ['Eve', {
  - asymmetricMatch: who => who === 'Alice' || who === 'Bob',
  + asymmetricMatch: function asymmetricMatch(who) {
  + return who === 'Alice' || who === 'Bob';
  + },
  }],
  ].forEach(([a, b]) => {
  test(`expect(${stringify(a)}).toEqual(${stringify(b)})`, () => {
  @@ -120,7 +122,9 @@ describe('.toEqual()', () => {
  c: jestExpect.anything(),
  }],
  ['Alice', {
  - asymmetricMatch: who => who === 'Alice' || who === 'Bob',
  + asymmetricMatch: function asymmetricMatch(who) {
  + return who === 'Alice' || who === 'Bob';
  + },
  }],
  ].forEach(([a, b]) => {
  test(`expect(${stringify(a)}).not.toEqual(${stringify(b)})`, () => {
  