Transform interferes with Istanbul code coverage

[wbecker]

When a class has isComponentishClass pass on it, it is transformed, and that transform has a branch in it:

var Some_React_Class = (function (_React$Component) {
  _inherits(Some_React_Class, _React$Component);

  function Some_React_Class() {
    _classCallCheck(this, _Some_React_Class);

    _get(Object.getPrototypeOf(_Some_React_Class.prototype), "constructor", this).apply(this, arguments);
  }

  _createClass(Some_React_Class, [{
    key: "render",
    value: function render() {
      return _react2["default"].createElement(
        "div"
      );
    }
  }]);

  var _Some_React_Class = Some_React_Class;

//This is the branch:
  Some_React_Class = _wrapComponent("_$Some_React_Class")(Some_React_Class) || Some_React_Class;
  return Some_React_Class;
})(_react2["default"].Component);

exports["default"] = (0, _reactRedux.connect)(select)(Some_React_Class);

I've done a diff between a class which has a render function and one that doesn't - the difference seems to be the || Some_React_Class 5 lines from the end there.

I'm not sure how to trigger the other side of that OR, or to ignore it, so this stops me from getting 100% test coverage and makes me sad.

[wbecker]

I'll see if I can turn this off when testing - I guess I shouldn't need hotloading

[wbecker]

On the other hand I can see a lot of other boiler plate that comes from Webpack that is ignored by isparta/istanbul so I wonder if it can be applied to this as well?

[wbecker]

Also - I am only assuming it comes from this project - it is the only one in my node modules that has _wrapComponent in it and it has only started happening since I upgraded from react hot loader!

[wbecker]

I was testing in NODE_ENV="development", changing to NODE_ENV="test" seems to make this go away, since the transforms only happen in dev mode.