Map deepEquals always returns true

[dpwrussell]

It seems that deepEquals is not working correctly for Map (or whatever that is being transpiled into by babel)

    it('Dummy map test', () => {

      const beforeState = new Map([[1, 'a'], [2, 'b']]);

      // Any one of these will be considered deeply equal
      // This one correctly equal
      // const afterState = new Map([[1, 'a'], [2, 'b']]);
      // None of these ones are correct
      // const afterState = new Map([[1, 'a'], [2, 'c']]);
      // const afterState = new Map([[1, 'a'], [3, 'b']]);
      const afterState = new Map();

      chai.assert.deepEqual(beforeState, afterState);
    });

Test run like so:

$ node_modules/mocha/bin/mocha --compilers js:babel-core/register

Result:

✓ Dummy map test

[meeber]

@dpwrussell Thanks for posting! This is a known issue in the deep-eql module used by Chai but is actively being worked on as part of a major refactor. Status of that issue can be tracked at chaijs/deep-eql#4. Gonna close this one as a duplicate.