this value differs between dart2js and Dartium when calling a JS function.

[kseo]

I create a function JsTest and added showThis function to it. It simply prints this value to the console.

(function (mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
      module.exports = mod();
  else if (typeof define == "function" && define.amd) // AMD
      return define([], mod);
  else // Plain browser env
      this.JsTest = mod();
})(function () {
  "use strict";

  function JsTest() {
  }

  JsTest.showThis = function (name, value) {
    console.log(this);
  };

  return JsTest;
});

On the Dart side, I declared showThis function with @js annotation.

@JS('JsTest.showThis')
external void showThis();

void main() {
  showThis();
}

dart2js prints function JsTest() {} as I expected, but surprisingly Dartium prints Window.

[jacob314]

The dart2js behavior is correct.

[jacob314]

Verified that this was fixed a while ago. Regression test checked in here:
bcf224b