fbjs will throw (evaluating 'self.fetch.bind(self)' in capybara.

[geminiyellow]

i use capybara as my test framework,
but when i send a fetch in phantomJS,
i got:

TypeError: 'undefined' is not a function (evaluating 'self.fetch.bind(self)')
      TypeError: 'undefined' is not a function (evaluating 'self.fetch.bind(self)')
          at http://127.0.0.1:8888/assets/application-bs2.js:40940
          at http://127.0.0.1:8888/assets/application-bs2.js:38711 in __webpack_require__
          at http://127.0.0.1:8888/assets/application-bs2.js:39822
          at http://127.0.0.1:8888/assets/application-bs2.js:38711 in __webpack_require__
          at http://127.0.0.1:8888/assets/application-bs2.js:39051
          at http://127.0.0.1:8888/assets/application-bs2.js:38711 in __webpack_require__
          at http://127.0.0.1:8888/assets/application-bs2.js:38914
          at http://127.0.0.1:8888/assets/application-bs2.js:38971
          at http://127.0.0.1:8888/assets/application-bs2.js:38711 in __webpack_require__
          at http://127.0.0.1:8888/assets/application-bs2.js:38738
          at http://127.0.0.1:8888/assets/application-bs2.js:38711 in __webpack_require__
          at http://127.0.0.1:8888/assets/application-bs2.js:38731
          at http://127.0.0.1:8888/assets/application-bs2.js:46590 (Capybara::Poltergeist::JavascriptError)

and anybody can tell me what should i change ?

[sophiebits]

Maybe do global.self = global;.

[geminiyellow]

@spicyj oh... in where?

[geminiyellow]

OK, done. i need use whatwg-fetch with webpack.