Add handling for removing propTypes from babel output code

[gandazgul]

So this is a third party library that ships their compiled code with propTypes, with this change it will removed.

[gandazgul]

In:

var ClassName = _react2.default.createClass({
  displayName: 'ClassName',

  propTypes: {
    string: _react2.default.PropTypes.string,
    func: _react2.default.PropTypes.func,
    boll: _react2.default.PropTypes.bool,
    number: _react2.default.PropTypes.number,
  },

  render: function () { ... }
});

Out:

var ClassName = _react2.default.createClass({
  displayName: 'ClassName',

  render: function () { ... }
});

[oliviertassinari]

Could we add a test case? I thought we were already supporting that. Maybe there is a regression.

[gandazgul]

It doesn't work for me, the function is called createClass in React 16, so the search for the parent returns null. This fix is to both look for the funciona name in a different place (what I saw while debugging)a and the function name being createClass instead of createReactClass (which is an import).

[gandazgul]

I can add a test case, I'll research how to do that.

[oliviertassinari]

I think that we already have a test case for it.

[gandazgul]

You have a test case for the usage of the npm module create-react-class but not for this case which is re-parsing babel output.

I renamed the test case for create-react-class and added one for this case

[gandazgul]

Test cases and build passing, can we merge this?

[oliviertassinari]

@gandazgul Thank you!

[gandazgul]

Woohoo! Thank you!